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nord MAXXDRIVE Customer's Operating And Assembly Instructions

Explosion-protected industrial gear units
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B 2050 – en
Explosion-protected industrial gear units
Operating and Assembly Instructions

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Jayakumar
May 17, 2025

Can we increase the rpm of output shaft to 12rpm instead of 6.3rpm for SK11421 gear box ratio:23164.1

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Summary of Contents for nord MAXXDRIVE

  • Page 1 B 2050 – en Explosion-protected industrial gear units Operating and Assembly Instructions...
  • Page 2 Explosion-protected industrial gear units – Operating and Assembly Instructions B 2050 en-3023...
  • Page 3 They serve as the prerequisite for smooth and safe operation and the fulfilment of any warranty claims. Contact Getriebebau NORD GmbH & Co. KG if your questions regarding the handling of the device are not answered in this document or if you require further information.
  • Page 4 Explosion-protected industrial gear units – Operating and Assembly Instructions Documentation B 2050 Designation: 6053002 Part no.: Series: Gear units and geared motors Type series: SK 5207 to SK 15507, SK 5217 to SK 11217, SK 5321 to SK 15421, SK 5418 to SK 12418 Gear unit types: Industrial gear units B 2050 en-3023...
  • Page 5 Revision 1817 May 2017 B 2050, 6053002 / • Revision of ATEX documentation, 1819 May 2019 • Extension of the MAXXDRIVE ® XT series, • New Declarations of Conformity, • General corrections B 2050, 6053002 / • Extensive revision of the safety and warning information,...

  • Page 6: Table 1: Version List B 2050

    Explosion-protected industrial gear units – Operating and Assembly Instructions Title, Order Remarks number / Date Version Internal code B 2050, 6053002 / • Descriptions for Options DB and VL/KL 2/3/4/6 added 4620 November • OH option added 2020 • Revision of tables for lubricants and minimum starting temperatures •...
  • Page 7 Any editing or amendment or other utilisation of the document is prohibited. Publisher Getriebebau NORD GmbH & Co. KG Getriebebau-Nord-Straße 1 • 22941 Bargteheide, Germany • http://www.nord.com Fon +49 (0) 45 32 / 289-0 • Fax +49 (0) 45 32 / 289-2253 Member of the NORD DRIVESYSTEMS Group...
  • Page 8 Explosion-protected industrial gear units – Operating and Assembly Instructions B 2050 en-3023...

  • Page 9: Table Of Contents

    Table of Contents Table of Contents Safety information ............................. 14 Intended use ............................ 14 Safety information for explosion protection ..................14 1.2.1 Field of use ......................... 15 1.2.2 Attachments and equipment ....................15 1.2.3 Lubricants ........................... 15 1.2.4 Operating conditions ......................15 1.2.5 Radial and axial forces .......................
  • Page 10 Explosion-protected industrial gear units – Operating and Assembly Instructions 3.8.4 Extruder flange version (Option: VL5) ................46 3.8.5 Agitator version with True Drywell and foot mounting (Option: VL6, KL6) ......47 True Drywell version gear units (Option: VL4, KL4, VL6, KL6, DRY) ..........47 3.10 Motor base frame (Option: MF) ......................
  • Page 11 Table of Contents 5.2.9 Oil filter (Option: CS1-X, CS2-X, LC/LCX) ................86 5.2.10 Remove dust ........................86 5.2.11 Oil change .......................... 86 5.2.12 Checking the cooling coil for deposits (Option: CC) ............87 5.2.13 Cleaning or replacing the vent .................... 88 5.2.13.1 Vent filter (Option: FV) 5.2.13.2 Cellulose filter (Option: EF) 5.2.13.3 Drying agent filter / Wet air filter (Option: DB)
  • Page 12 Explosion-protected industrial gear units – Operating and Assembly Instructions List of illustrations Figure 1: MAXXDRIVE ® XT 2-stage helical bevel gear unit .................. 22 Figure 2: Name plate ............................. 25 Figure 3: Transport of standard gear unit ......................28 Figure 4: Transport of gear units with motor adapter ..................... 29 Figure 5: Transport of gear units with auxiliary drives or first stage gear units ............
  • Page 13 List of tables List of tables Table 1: Version list B 2050 ............................. 6 Table 2: Gear unit overview MAXXDRIVE ® Standard – Parallel gear units ............20 Table 3: Gear unit overview MAXXDRIVE ® Standard – Right-angle gear units............. 20 Table 4: Gear unit overview MAXXDRIVE ®...

  • Page 14: Safety Information

    The gear units may only be used according to the information in the technical documentation from Getriebebau NORD GmbH & Co. KG. Damage to the gear unit may result if the gear unit is not used as intended and according to the information in the operating and installation manual. This may also result in personal injury.

  • Page 15: Field Of Use

    Gear units must be properly designed. Overloads may result in breakage of components. This may cause sparks. Carefully fill in the enquiry form. Getriebebau NORD GmbH & Co KG designs gear units according to the details in the enquiry form. Please note the information for gear unit selection in the enquiry form and in the catalogue.

  • Page 16: Radial And Axial Forces

    Perform all of the inspection and maintenance work specified in these operating and installation instructions with great care, in order not to increase the risk of explosion due to functional faults and damage. The drive must be shut down if any abnormalities are detected. Contact Getriebebau NORD. •...

  • Page 17: Applied Ignition Protection Classes According To Din En Iso 80079-37

    Qualified specialist personnel are persons who have the training and experience to recognise and avoid any possible risks. Repairs may only be done by Getriebebau NORD GmbH & Co. KG or by a person authorised in accordance with the statutory regulations of explosion protection.

  • Page 18: Safety Information For Installation And Maintenance

    Explosion-protected industrial gear units – Operating and Assembly Instructions 1.7.2 Safety information for installation and maintenance Before starting work on the gear unit disconnect the drive from the power supply and secure it against accidental switch-on. Allow the gear unit to cool down. Depressurise the cooling circuit lines. Damaged or defective components, attachment adapters, flanges and covers may have sharp edges.

  • Page 19: Hazards Due To High Or Low Temperatures

    1 Safety information 1.8.4 Hazards due to high or low temperatures The gear unit may heat up to 90 °C during operation. Touching hot surfaces or contact with hot oil may result in burns. At very low ambient temperatures freezing may occur on contact. •...

  • Page 20: Description Of Gear Units

    SK 11307 SK 12207 SK 12307 SK 13207 SK 13307 SK 14207 SK 14307 SK 15207 SK 15307 Table 2: Gear unit overview MAXXDRIVE ® Standard – Parallel gear units 3-stage 4-stage SK 5407 SK 5507 SK 6407 SK 6507...

  • Page 21: Table 5: Gear Unit Overview Maxxdrive ® Xd - Parallel Gear Units

    SK 9421 SK 10321 SK 10421 SK 11321 SK 11421 SK 12321 SK 12421 SK 15321 SK 15421 Table 5: Gear unit overview MAXXDRIVE ® XD – Parallel gear units 3-stage SK 5418 SK 6418 SK 7418 SK 8418 SK 9418...

  • Page 22: Figure 1: Maxxdrive ® Xt 2-Stage Helical Bevel Gear Unit

    Explosion-protected industrial gear units – Operating and Assembly Instructions Figure 1: MAXXDRIVE ® XT 2-stage helical bevel gear unit B 2050 en-3023...
  • Page 23 2 Description of gear units Description Hollow output shaft Fixing element Cooling coil CS1-X Cooling system oil/water CS2-X Cooling system oil/air Torque arm Drying agent filter Additional measures against oil leak for installation position M5 (True Drywell) with standard bearings Splined hollow output shaft Elastic torque arm (details on name plate D) Cellulose filter...

  • Page 24: Table 8: Versions And Options

    Explosion-protected industrial gear units – Operating and Assembly Instructions Description Oil gauge Oil level indicator Oil reservoir tank PT100 Temperature sensor Back stop Shrink disc SAFOMI No-seal motor adapter for vertical gear units Solid output shaft Reinforced bearings Agitator version - Reinforced bearings Agitator version - Reinforced bearings...

  • Page 25: Name Plate

    2.2 Name plate The name plate must be permanently attached to the gear unit and must not be exposed to permanent soiling. Please contact the NORD service department if the name plate is illegible or damaged. Figure 2: Name plate...
  • Page 26 Explosion-protected industrial gear units – Operating and Assembly Instructions For geared motors (gear units with attached electric motor), the electric motor has its own name plate with separate labelling according to Directive 2014/34/EU (ATEX). The motor labelling must also comply with the data for the system and machine planning.

  • Page 27: Transport, Storage, Assembly

    3 Transport, storage, assembly 3 Transport, storage, assembly 3.1 Transporting the gear unit WARNING Hazard due to falling loads • Do not use the eye bolts on a mounted motor to lift the unit. • Note the centre of gravity of the gear unit. Transport the gear unit with care.

  • Page 28: Transport Of Standard Gear Units

    Explosion-protected industrial gear units – Operating and Assembly Instructions 3.1.1 Transport of standard gear units Legend 1: Lifting strap 2: Shackle : Not permissible : Permissible Figure 3: Transport of standard gear unit B 2050 en-3023...

  • Page 29: Transport Of Gear Units With Motor Adapter

    3 Transport, storage, assembly 3.1.2 Transport of gear units with motor adapter The ring bolts on the motor must not be used for transportation. Legend 1: Lifting strap 2: Shackle : Not permissible : Permissible Figure 4: Transport of gear units with motor adapter B 2050 en-3023...

  • Page 30: Transport Of Gear Units With Auxiliary Drives Or First Stage Gear Units (Option: Wg, Wx)

    Explosion-protected industrial gear units – Operating and Assembly Instructions 3.1.3 Transport of gear units with auxiliary drives or first stage gear units (Option: WG, The eyebolts on the auxiliary drive, on the first stage gear unit or on the motor must not be used for transportation.

  • Page 31: Transport Of Gear Units With V-Belt Drives

    3 Transport, storage, assembly 3.1.4 Transport of gear units with V-belt drives The ring bolts on the motor and the motor bracket must not be used for transportation. Legend 1: Lifting strap 2: Shackle : Not permissible : Permissible Figure 6: Transport of gear units with V-belt drives B 2050 en-3023...

  • Page 32: Transport Of Agitator Version Gear Units

    Explosion-protected industrial gear units – Operating and Assembly Instructions 3.1.5 Transport of agitator version gear units The ring bolts on the motor must not be used for transportation. Special lifting gear must be used to ensure correct transport if the shackle holes cannot be used due to the IEC attachment.

  • Page 33: Transport Of Gear Unit With Motor Swing Base Or Base Frame

    3 Transport, storage, assembly 3.1.6 Transport of gear unit with motor swing base or base frame Motors with a motor swing base or base frame may only be transported with shackles and lifting straps or chains which are vertically aligned. Only use the attachment points on the motor swing base or on the base frame.

  • Page 34: Storage And Downtimes

    Explosion-protected industrial gear units – Operating and Assembly Instructions 3.2 Storage and downtimes 3.2.1 General measures • Store the gear unit in a dry space, relative humidity less than 60%. • Store the gear unit at a temperature in the range of – 5 °C to + 50 °C without severe temperature fluctuations.

  • Page 35: Checking The Version

    (PG oils). If PG oils are used, the VCI concentrate must be removed from the gear unit. When using VCI additive, only use the oil types, which are specified on the name plate and are approved by Getriebebau NORD (see chapter 7.3.2 "Gear oils").

  • Page 36: Preparing For Installation

    Make sure that no aggressive or corrosive substances which attack metal, lubricants or elastomers are present at the installation site or are subsequently expected during operation. If such substances are to be expected, contact Getriebebau NORD. The gear unit, especially its radial shaft seals should be protected from exposure to direct sunlight.

  • Page 37: Installing The Gear Unit

    Do not allow dust to accumulate in the area of the gear unit Please contact NORD if the conditions stated above cannot be met. The base on which the gear unit is fitted must be vibration-free, torsionally rigid and flat. The flatness of the bolting surface on the base must be of the requested precision (see chapter 7.5 "Tolerances for...

  • Page 38: Installation Of A Hub On Solid Shaft (Option: V, L)

    Explosion-protected industrial gear units – Operating and Assembly Instructions 3.6 Installation of a hub on solid shaft (option: V, L) DANGER Explosion hazard due to increased temperature or sparks The gear unit may heat up to an impermissible extent if transverse forces are applied unfavourably.

  • Page 39: Figure 10: Permissible Application Of Force To Drive And Driven Shafts

    3 Transport, storage, assembly The transverse force must be applied as closely as possible to the gear unit. For drive shafts with free shaft ends (Option W), the maximum permissible transverse force F applies for the application of the transverse force to the centre of the free shaft journal. For output shafts, the application of the transverse force F must not exceed the dimension x .

  • Page 40: Assembly Of Gear Units With Hollow Shaft (Option A, Ea)

    Assembly and subsequent dismantling is facilitated by applying an anti-corrosive lubricant to the shaft before fitting (e.g. NORD Anti-Corrosion Part No. 089 00099). Excess lubricant may escape after fitting and may drip off. Thoroughly clean these points on the output shaft after a running-in time of approx. 24 hours.

  • Page 41: Fitting A Hollow Shaft With Fastening Element (Option B)

    3 Transport, storage, assembly 3.7.1 Fitting a hollow shaft with fastening element (option B) The gear unit can be fitted to shafts with and without a shoulder using the fixing element (option B). Tighten the fixing element bolt with the correct torque (see chapter 7.4 "Screw tightening torques"). Installation Legend Fixing element...

  • Page 42: Fitting A Hollow Shaft With Shrink Disc (Option: S)

    Do not tighten the tensioning bolts if the solid shaft is not installed. This would permanently deform the hollow shaft. Hollow shafts with shrink discs must be protected from dust, dirt and moisture. NORD recommends option H/H66 (see chapter 3.12 "Installing the cover cap, air baffle (Option: H, H66, FAN, MF.., MS…)").

  • Page 43: Figure 14: Machine Shaft Assembly For Special Hollow Shafts With Shrink Discs

    3 Transport, storage, assembly Prerequisites • The hollow shaft must be completely free of grease. • The standard solid shaft of the machine must be completely free of grease. • Unless otherwise stated in the specific dimension sheet for the order, the external diameter of the solid shaft must be within the tolerance h6 if the diameter is up to and including 160 mm or g6 for larger diameters.

  • Page 44: Figure 15: Fitted Shrink Disc

    Explosion-protected industrial gear units – Operating and Assembly Instructions 7. After tightening the tensioning bolts the face of the inner ring on the screw side must be flush with the face of the outer ring. The shrink disc must be checked visually for distortion (Figure 15). Figure 15: Fitted shrink disc 8.

  • Page 45: Installing A Flange Version Gear Unit (Option: F, Fk, Vl2/3/4/5, Kl2/3/4)

    3 Transport, storage, assembly 3.8 Installing a flange version gear unit (Option: F, FK, VL2/3/4/5, KL2/3/4) NOTICE Risk of gear unit damage from distortion • Flange version gear units must only be bolted to the flange of the driven machine. The bolting surface of the driven machine must comply with the tolerances in Section 7.5 "Tolerances for bolting surfaces".

  • Page 46: Agitator Version With Drywell (Option: Vl3, Kl3)

    Explosion-protected industrial gear units – Operating and Assembly Instructions 3.8.2 Agitator version with Drywell (Option: VL3, KL3) NOTICE Check the leak indicator regularly (see chapter 5.2.6.5 "Checking the leak indicator (Option: VL3, KL3 with Drywell)"). These options have the same dimensions and load limits as Option VL2/KL2 (see 3.8.1 Agitator version (Option: VL2, KL2).

  • Page 47: Agitator Version With True Drywell And Foot Mounting (Option: Vl6, Kl6)

    3 Transport, storage, assembly 3.8.5 Agitator version with True Drywell and foot mounting (Option: VL6, KL6) These options include the entire internal elements of Option VL4 or KL4 (see 3.8.3 Agitator version with True Drywell (Option: VL4, KL4)). The elements are installed in a bolt-on housing without a flange. Legend Grease nipple Closing cap for grease escape...

  • Page 48: Motor Base Frame (Option: Mf)

    Explosion-protected industrial gear units – Operating and Assembly Instructions 3.10 Motor base frame (Option: MF) A motor base frame is a steel structure for pre-assembled drive packages in a horizontal position. This is used to mount the gear unit, (hydro) coupling, motor, and where applicable, a mechanical brake. It also includes the necessary protective devices (e.g.

  • Page 49: Motor Swing Base (Option: Ms)

    Hollow shaft with shrink disc (option S), see section 3.7.2 "Fitting a hollow shaft with shrink disc (Option: S)" NORD recommends a g6 fit for the bolt supporting the elastic element. To facilitate installation and to protect against corrosion, a suitable lubricant may be applied to the inner diameter of the elastic element.

  • Page 50: Installing The Cover Cap, Air Baffle (Option: H, H66, Fan, Mf

    • Protection of gear unit components (e.g. seals) with high dust concentrations (Option: H66) NORD fan covers and air baffles ensure a correct supply of air for the gear unit (Option FAN) NOTICE Risk of gear unit damage due to incorrect installation •...

  • Page 51: Figure 20: Centre Of Gravity Of Motor

    1500 Weight [kg] see Figure 20 for dimension X max Table 10: Transnorm motor weights Getriebebau NORD must be consulted if the values stated in the table are exceeded. Legend Centre of gravity of motor Figure 20: Centre of gravity of motor...

  • Page 52: Fitting A Motor With Standard Claw Coupling (Option Iec, Nema)

    Explosion-protected industrial gear units – Operating and Assembly Instructions 3.13.1 Fitting a motor with standard claw coupling (option IEC, NEMA) • Also pay attention to the separate documentation for the coupling. If a different type of coupling is used, observe the documentation from the manufacturer for the assembly sequence.

  • Page 53: Fitting A Motor With Standard Claw Coupling (Option Safomi)

    3 Transport, storage, assembly 3.13.2 Fitting a motor with standard claw coupling (option SAFOMI) NOTICE Possible motor damage due to oil mist Due to the design, oil mist and oil splashes may reach the motor’s bearing cover during operation. Using a motor not designed for oil contact may result in severe motor damage.

  • Page 54: Dog Coupling

    Explosion-protected industrial gear units – Operating and Assembly Instructions Optionally, turbo couplings can be equipped with a fusible plug and a separate mechanical switch. Legend Fusible plug Mechanical switch Figure 22: Fusible plug with separate mechanical switch The triggering temperature of the fusible plug is usually 120 °C. This ensures that the system is shut down before the temperature for the fusible plug is reached.

  • Page 55: Connecting A Cooling Coil (Option Cc)

    • The cooling system may only be operated in combination with a temperature monitoring device (PT100). • Observe the special ATEX documentation provided by NORD. WARNING Risk of injury due to pressure discharge • Ensure that the pressure is released from the cooling circuit before carrying out any work on the gear unit.

  • Page 56: Figure 23: Cooling Cover With Cooling Coil Fitted (Schematic Diagram)

    Explosion-protected industrial gear units – Operating and Assembly Instructions The coolant pressure must not exceed 8 bar (3D/3G) / 2 bar (2D/2G). We also recommend fitting a pressure reducer at the coolant inlet to avoid damage due to excessive pressure. The required quantity of coolant depends on the size of the cooling coil.

  • Page 57: Installation Of An External Cooling System (Option: Cs1-X, Cs2-X)

    • The cooling unit may only be operated in combination with a temperature monitoring device (PT100). • Observe the special ATEX documentation provided by NORD. NOTICE Damage to the cooling system • Ensure load-free mounting of the connection pipes or hoses.

  • Page 58: Installing A Fan (Option: Fan-A, Fan-R)

    Explosion-protected industrial gear units – Operating and Assembly Instructions Legend Gear unit intake connection Pump/cooling system intake connection Cooling system pressure connection Gear unit pressure connection PT100 temperature monitoring (optional/recommended) Cooling water connection Figure 24: Industrial gear unit with CS1-X and CS2-X cooling systems Legend Intake connection Pump...

  • Page 59: Installation Of The Lubricant Circulation (Option: Lc, Lcx)

    The switching point of the pressure switch is set at the factory and may only be changed upon consultation with NORD. Information In the case of combination of circulation lubrication with external cooling units, the pressure and intake lines between the circulation lubrication and the cooling unit must be connected.

  • Page 60: Installing The Torque Arm (Option D, Ed, Ms)

    Explosion-protected industrial gear units – Operating and Assembly Instructions Figure 26: Temperature sticker position for helical and bevel helical gear units 3.22 Installing the torque arm (option D, ED, MS) NOTICE Reduced service life of the output shaft bearings due to incorrect installation of the torque arm •...

  • Page 61: Figure 27: Permissible Installation Tolerances Of The Torque Arm (Option D And Ed) (Schematic Diagram)

    3 Transport, storage, assembly Legend Fork head with bolt Stud Maintenance-free joint head Fork plate with bolt Washer Figure 27: Permissible installation tolerances of the torque arm (option D and ED) (schematic diagram) The length of the torque arm (option D) can be adjusted within a certain range. 1.

  • Page 62: Connecting The Oil Heater (Option: Oh)

    Explosion-protected industrial gear units – Operating and Assembly Instructions 3.23 Connecting the oil heater (Option: OH) DANGER Explosion hazard • Oil heaters (Option: OH) are only approved for Category 3D/3G. • The oil heater may only be operated when at a standstill. •...

  • Page 63: Commissioning

    4 Commissioning 4 Commissioning 4.1 Checking the oil level DANGER Explosion hazard in case of inadequate lubrication • Check the oil level before commissioning (see chapter 5.2.6 "Oil level"). The following table shows the usual oil filling state of oil spaces on delivery. The actual oil filling state should be obtained from the order-related documentation (e.g.

  • Page 64: Process Heat Due To Hollow Output Shaft

    In case of changes to process parameters or a subsequent conversion to this application case, verification must be made by Getriebebau NORD. The hot medium may only flow through the hollow shaft after commissioning, when the roller bearings at the output have reached their operating temperature.

  • Page 65: Lubricant Circulation (Option: Lc, Lcx)

    4 Commissioning 4.4 Lubricant circulation (Option: LC, LCX) DANGER Explosion hazard in case of inadequate lubrication • The drive unit may only be commissioned after the pump and the sensors for the circulation lubrication have been connected and commissioned. • For cold starting it must be ensured that the highest permissible viscosity of the lubricant is not exceeded in order to prevent excessive pressures in the pump and the lubricant line system.

  • Page 66: Gear Unit Cooling With Fan (Option: Fan-A, Fan-R)

    Explosion-protected industrial gear units – Operating and Assembly Instructions 4.5 Gear unit cooling with fan (Option: FAN-A, FAN-R) DANGER Explosion hazard • Check the contact guard for warping and damage. Repair possible damage prior to commissioning. • Foreign objects must not enter the air intake openings during operation. Sparking may occur if such objects collide with the fan blades.

  • Page 67: Cooling Coil (Option: Cc)

    The coolant inlet temperature must not exceed 20 °C. The coolant inlet temperature may only be higher in individual cases according to the order documentation. In case of other coolant inlet temperatures, observe the special documentation provided by Getriebebau NORD or contact Getriebebau NORD.

  • Page 68: External Cooling System (Option Cs1-X, Cs2-X)

    The maximum ambient temperature is 40 °C. If higher ambient temperatures may occur, verification must be made by Getriebebau NORD prior to commissioning. The permissible lubricant temperature range is 10 °C to 80 °C.

  • Page 69: Oil Heater (Option: Oh)

    20 °C. This means that the heater is in operation as long as an oil temperature of 20 °C has not been reached. Please contact Getriebebau NORD for other switch-off temperatures. The oil heater must remain functional when the gear unit is shut down in order to ensure that the oil temperature does not drop too much.

  • Page 70: Backstop/Auxiliary Drive (Option: R, Wx)

    Explosion-protected industrial gear units – Operating and Assembly Instructions 4.10 Backstop/Auxiliary drive (Option: R, WX) DANGER Explosion hazard • The auxiliary drive must be secured or monitored to prevent it from idling. • Note the minimum speed for release of the back stop as well as the maximum speed.

  • Page 71: Table 12: Back Stop Lift-Off Speeds Sk 5..07 - Sk 10..07

    4 Commissioning Nominal gear ratio i Lift-off speed Gear unit Stages [rpm] From SK 5207 SK 5307 SK 5407 1088 1759 SK 5507 2740 SK 6207 SK 6307 31.5 SK 6407 1088 1759 SK 6507 2740 SK 7207 SK 7307 SK 7407 1012 1636...

  • Page 72: Table 13: Back Stop Lift-Off Speeds Sk 11..07 - Sk 15..07

    Explosion-protected industrial gear units – Operating and Assembly Instructions Nominal gear ratio i Lift-off speed Gear unit Stages [rpm] From SK 11207 22.4 SK 11307 31.5 12.6 SK 11407 31.5 1136 1136 SK 11507 1420 SK 12207 SK 12307 22.4 12.5 SK 12407 31.5...

  • Page 73: Temperature Measurement

    (see chapter 3.21 "Attaching the temperature sticker"). 3. Measure the temperature of the air T in the immediate vicinity of the gear unit. Shut down the drive and contact Getriebebau NORD if one of the following criteria is not fulfilled: • The measured air temperature T is within the permissible range stated on the type plate.

  • Page 74: Test Run

    • In case of irregularities, shut down the drive immediately. • Contact the NORD service department. During commissioning of the gear unit a test run should be carried out in order to detect any problems prior to continuous operation. During a test run under full load, the gear unit should be checked for: •...

  • Page 75: Checklist

    4 Commissioning 4.13 Checklist 4.13.1 Mandatory Checklist Date Information, Item to be checked of check: see Section Can transport damage or other damage be found? 3.4.1 Does the labelling on the name plate comply with the specifications? Does the required design comply with the actual installation position? Has the correct oil level for the design been checked? 5.2.6...

  • Page 76: Optional

    Explosion-protected industrial gear units – Operating and Assembly Instructions 4.13.2 Optional Checklist Date Information, Item to be checked of check: see Section Option R, WX, FAN: 4.10, 4.5 Is the direction of rotation specified and checked? Option D and ED: 3.22 Is the torque arm installed correctly? Option S, FAN:...

  • Page 77: Service And Maintenance

    5 Service and maintenance 5 Service and maintenance 5.1 Inspection and maintenance intervals Inspection and Information, Inspection and maintenance work maintenance intervals see Section According to • Option PT100: Check the function and measurement manufacturer's details accuracy; recalibrate as necessary •...

  • Page 78: Table 17: Inspection And Maintenance Intervals

    Explosion-protected industrial gear units – Operating and Assembly Instructions Inspection and Information, Inspection and maintenance work maintenance intervals see Section Every 2,500 operating • Visual inspection of radial shaft seal 5.2.1 hours, at least every six • Check the oil level and oil condition 5.2.6 months •...
  • Page 79 5 Service and maintenance Information The oil change intervals apply for normal operating conditions and operating temperatures up to 80 °C. The oil change intervals are reduced in the case of extreme operating conditions (operating temperatures higher than 80 °C, high humidity, aggressive environment and frequent fluctuations in the operating temperature).

  • Page 80: Service And Maintenance Work

    5.2.2 Check for running noises If the gear unit produces unusual running noises or vibrations, this could indicate damage to the gear unit. In this case the gear unit must be repaired immediately. Please contact the NORD Service department. B 2050 en-3023...

  • Page 81: Check Fan And Spaces Between The Ribs (Maxxdrie Xt) (Option: Fan-A, Fan-R)

    Fan operation increases the probability of dirt and dust deposits in the spaces between the cooling webs of a ribbed gear unit housing (Maxxdrive XT). This will reduce the thermal dissipation performance of the housing. As a consequence, the gear unit is no longer cooled sufficiently. Clean the spaces between the ribs.

  • Page 82: Oil Level Screw

    Explosion-protected industrial gear units – Operating and Assembly Instructions Information Incorrect oil level indication due to trapped air During commissioning and after changing the oil, air (air pockets) may become trapped in the gear unit oil bath. These disappear during operation. The resulting space fills with lubricant. Because of this, the oil level may deviate in comparison with the initial filling.

  • Page 83: Oil Inspection Glass/Oil Level Glass (Option: Osg), Oil Level Indicator (Option: Ost)

    Damage to the gear unit due to high oil level If the gear unit is delivered with oil and installation position M5 the oil reservoir tank vessel is completely filled by NORD. High oil levels may result in damage to the gear unit. •...

  • Page 84: Checking The Leak Indicator (Option: Vl3, Kl3 With Drywell)

    – If a larger quantity of oil has escaped by the next interval, there is a permanent malfunction of the sealing system, which must be repaired. In this case, please contact NORD Service. 5.2.6.6 Auxiliary drive (option WX), first-stage gear unit (option WG), fluid coupling Auxiliary drive (option WX) Check the oil level on the auxiliary drive according to documentation B1000.

  • Page 85: Seal Adapter For Vertical Gear Units (Option Safomi)

    5.2.7 Visual inspection of the rubber elements of the elastic torque arm (Option: ED) If these show damage such as tears to the surface, the rubber elements must be replaced. In this case, please contact NORD Service. B 2050 en-3023...

  • Page 86: Visual Inspection Of Cables

    The piping of lubrication circulation systems or vent lines for full oil level in combination with oil level tanks must be checked for leaks. The affected pipes must be replaced in case of leaks. In this case, please contact NORD Service. 5.2.8.2 Hose lines (Option: LC, LCX, CS1-X, CS2-X, OT) Hose lines are used as intake and pressure lines for lubricant circulation and for cooling units.

  • Page 87: Checking The Cooling Coil For Deposits (Option: Cc)

    If a chemical cleaner is used, it must be ensured that the cleaning agent does not attack the material of the cooling coil (copper pipe and brass fittings). Check the cooling coil and the cover for leaks if strong corrosion is found on the connections. Please contact the NORD Service department. B 2050 en-3023...

  • Page 88: Cleaning Or Replacing The Vent

    Explosion-protected industrial gear units – Operating and Assembly Instructions 5.2.13 Cleaning or replacing the vent 5.2.13.1 Vent filter (Option: FV) The ventilation filter uses a wire mesh as the filter material and enables an equalisation of pressure between the interior of the gear unit and the environment. Visually check the ventilation filter for soiling. A soiled filter is no longer capable of fulfilling its function and must be replaced.

  • Page 89: Figure 37: Drying Agent Filter, Example Version

    5 Service and maintenance Legend Second filter element Polycarbonate housing Foam pad Connecting thread Air inlet Filter element Silica gel Active carbon pad (optional) Foam pad Figure 37: Drying agent filter, example version Drying agent filters are intended to prevent damp oil, condensation and rust in the system, as well as to increase the service life of the oil and the machine filters.

  • Page 90: Pressure Venting (Option: Dr)

    MSS7 seals are two-part seals which consist of a liner with an axial dust lip and a radial shaft sealing ring with a radial dust lip (Figure 39: MSS7 seal). Please contact the NORD Service department in case of any queries.

  • Page 91: Re-Lubrication Of Bearings In The Gear Unit

    Exceptions to this are gear units SK 5..07 to SK 6..07 in installation position M5/M6. In this installation position, the upper bearings are lubricated with grease. Please contact the NORD Service department for replacement of the grease in the roller bearings. Recommended grease: Petamo GHY 133N - Klüber Lubrication. (see chapter 7.3.1 "Roller bearing greases")

  • Page 92: Check The Gear Unit Monitoring (Only For 2G / 2D)

    Explosion-protected industrial gear units – Operating and Assembly Instructions For agitator version gear units re-lubrication of the lower grease-lubricated bearing in the output flange is necessary. The flanges are equipped with DIN 71412 conical grease nipples in the area of the bearings.

  • Page 93: Inspection Cover

    5 Service and maintenance 5.2.18 Inspection cover WARNING Risk of injury due to rotating parts and danger of burns • Switch off the drive before opening the inspection cover. • Secure the drive against inadvertent switching on, for example with a padlock. •...

  • Page 94: General Overhaul

    The general overhaul must be carried out by qualified personnel in a specialist workshop with appropriate equipment. • We urgently recommend that the general overhaul is carried out by the NORD Service Department. With Category 2G and 2D gear units, a general overhaul is necessary after a specified period of operation.
  • Page 95 5 Service and maintenance Longer maintenance intervals often result if the actual power required by the application is known. The utilisation factor may be calculated as follows.         Max. permissible drive power or motor power in kW according to the name plate Actual drive power or motor power in kW which is required by the application at the rated speed., determined e.g.

  • Page 96: Disposal

    Explosion-protected industrial gear units – Operating and Assembly Instructions 6 Disposal Observe the current local regulations. In particular, lubricants must be collected and disposed of correctly. Gear unit components Material Gearwheels, shafts, roller bearings, keys, circlips, … Steel Gear unit housing, housing components, … Grey cast iron Light alloy gear unit housing, light alloy housing components, …...

  • Page 97: Appendix

    7 Appendix 7 Appendix 7.1 Versions and mounting position 7.1.1 Parallel gear units Figure 41: Helical gear unit installation positions with standard mounting surface 7.1.2 Helical bevel gear unit Figure 42: Bevel gear unit installation positions with standard mounting surface B 2050 en-3023...

  • Page 98: Standard Positions Of The Oil Drain, Vent And Oil Level

    Explosion-protected industrial gear units – Operating and Assembly Instructions 7.2 Standard positions of the oil drain, vent and oil level The configuration and the position of the oil drain, vent and oil level should be primarily obtained from the dimension sheet for the order. If this does not contain any details, the following details can be used. 5x17 –...

  • Page 99: Table 20: Position Of Housing Options On Oil Screw Holes (Standard Installation Positions)

    7 Appendix 5x17 – 5x07, 6x07 7x07-10x07 11x07-15x07 11x17 207 307 407 507 207 307 407 507 207 307 407 507 16/17 /OT 16/17 /OT 9/10 9/10 9/10 /OT 9/10 9/10 9/10 13/14 /OT 13/14 /OT Key: Housing Standard position in housing Standard position in lid Oil tank Standard only possible in oil tank...
  • Page 100 Explosion-protected industrial gear units – Operating and Assembly Instructions Gear units SK 5207 – SK 10507 M1 oil screw holes B 2050 en-3023...
  • Page 101 7 Appendix Gear units SK 5207 – SK 10507 M2 oil screw holes B 2050 en-3023...
  • Page 102 Explosion-protected industrial gear units – Operating and Assembly Instructions Gear units SK 5207 – SK 10507 M3 oil screw holes B 2050 en-3023...
  • Page 103 7 Appendix Gear units SK 5207 – SK 10507 M4 / oil screw holes B 2050 en-3023...
  • Page 104 Explosion-protected industrial gear units – Operating and Assembly Instructions Gear units SK 5207 – SK 10507 M5 oil screw holes B 2050 en-3023...

  • Page 105: Figure 43: Numbering Of Oil Screw Holes On Sk 5207 - Sk 10507

    7 Appendix Gear units SK 5207 – SK 10507 M6 oil screw holes Figure 43: Numbering of oil screw holes on SK 5207 – SK 10507 B 2050 en-3023...
  • Page 106 Explosion-protected industrial gear units – Operating and Assembly Instructions Gear units SK 11207 – SK 15507 M1 oil screw holes B 2050 en-3023...
  • Page 107 7 Appendix Gear units SK 11207 – SK 15507 M2 oil screw holes B 2050 en-3023...
  • Page 108 Explosion-protected industrial gear units – Operating and Assembly Instructions Gear units SK 11207 – SK 15507 M3 oil screw holes B 2050 en-3023...
  • Page 109 7 Appendix Gear units SK 11207 – SK 15507 M4 oil screw holes B 2050 en-3023...
  • Page 110 Explosion-protected industrial gear units – Operating and Assembly Instructions Gear units SK 11207 – SK 15507 M5 oil screw holes B 2050 en-3023...

  • Page 111: Figure 44: Numbering Of Oil Screw Holes On Sk 11207 - Sk 15507

    7 Appendix Gear units SK 11207 – SK 15507 M6 oil screw holes Figure 44: Numbering of oil screw holes on SK 11207 – SK 15507 B 2050 en-3023...
  • Page 112 Explosion-protected industrial gear units – Operating and Assembly Instructions Gear units SK 5217 – SK 11217 M1 oil screw holes B 2050 en-3023...
  • Page 113 7 Appendix Gear units SK 5217 – SK 11217 M4 oil screw holes B 2050 en-3023...
  • Page 114 Explosion-protected industrial gear units – Operating and Assembly Instructions Gear units SK 5217 – SK 11217 M5 oil screw holes B 2050 en-3023...

  • Page 115: Figure 45: Numbering Of Oil Screw Holes On Sk 5217 - Sk 11217

    7 Appendix Gear units SK 5217 – SK 11217 M6 oil screw holes Figure 45: Numbering of oil screw holes on SK 5217 – SK 11217 B 2050 en-3023...

  • Page 116: Lubricants

    1/20 (5%). When changing the lubricant type or the ambient temperature range, please consult Getriebebau NORD. Otherwise, no warranty can be accepted for the function of the gear units.

  • Page 117: Gear Oils

    This table shows comparable approved lubricants from various manufacturers. The oil manufacturer can be changed within a viscosity and lubricant type. Only change the lubricant type or the viscosity after consultation with Getriebebau NORD. Mixing different oils is not permissible. When changing the gear oil, different oils of one lubricant type with the same viscosity may be mixed in a maximum ratio of 1/20 (5%).

  • Page 118: Minimum Starting Temperatures

    Explosion-protected industrial gear units – Operating and Assembly Instructions The auxiliary drive itself (option WX) or the first-stage gear unit (option WG) contains oil according to its own name plate. For components supplied with the product (e.g. fluid couplings or gear couplings), read the relevant manufacturers’...

  • Page 119: Lubricant Quantities

    7 Appendix 7.3.4 Lubricant quantities The lubricating oil quantity stated on the type plate is a guideline value. The precise quantity varies depending on the exact gear ratio and any options (e.g. OSG, OST, OT). Ensure that the oil level is correct. Adjust the oil level as necessary (see Section 5.2.6 "Oil level"). Information After changing the lubricant, and in particular after the initial filling, the oil level may change during the first few hours of operation, as the oil galleries and hollow spaces only fill gradually during operation.

  • Page 120: Tolerances For Bolting Surfaces

    Clean the soiled floor before starting troubleshooting. Gear unit malfunctions Fault Possible cause Remedy Oil level too low Correct oil level, Consult NORD Service department Bearing damage Consult NORD Service department Unusual running noises, Gear wheel damage Consult NORD Service department vibrations...

  • Page 121: Table 26: Overview Of Malfunctions

    Shrink disc slip Check shrink disc rotate although motor is running Breakage in gear unit Consult NORD Service department Cooling system defective Observe the separate operating manual Cooling system failure Pump does not deliver oil Check pump and replace as necessary...

  • Page 122: Leakage And Leak-Tightness

    Explosion-protected industrial gear units – Operating and Assembly Instructions 7.7 Leakage and leak-tightness Gear units are filled with oil or grease to lubricate the moving parts. Seals prevent the escape of lubricants. Full leak-tightness is technically not possible, as a certain film of moisture, for example on the radial shaft seals is normal and advantageous for a long-term sealing effect.

  • Page 123: Declaration Of Conformity

    7 Appendix 7.9 Declaration of Conformity 7.9.1 Explosion protected gear units and geared motors, Category 2G and 2D Figure 46: Declaration of Conformity for Category 2G / 2D, labelling according to DIN EN ISO 80079-36 B 2050 en-3023...

  • Page 124: Explosion Protected Gear Units And Geared Motors, Category 3G And 3D

    Explosion-protected industrial gear units – Operating and Assembly Instructions 7.9.2 Explosion protected gear units and geared motors, Category 3G and 3D Figure 47: Declaration of Conformity for Category 3G / 3D, labelling according to DIN EN ISO 80079-36 B 2050 en-3023...

  • Page 125: Repair Information

    7.11 Warranty NORD GmbH & Co. KG accepts no liability for damage to persons, materials or assets as a result of failure to observe this operating manual, operating errors or incorrect use. General wearing parts, e.g. radial seals are excluded from the warranty.
  • Page 126 Explosion-protected industrial gear units – Operating and Assembly Instructions Key word index General overhaul .......... 94 Address............125 Agitator version ........32, 91 Heat exchanger ..........81 Ambient temperature ........118 Hose lines ............. 86 Attachment adapter ........81 Auxiliary drive unit ......... 30 Installation .............
  • Page 127 Key word index Oil dip-stick ............ 83 Sensors ............59 Oil drain ........... 63, 98 Service ............125 Oil filter ............86 Service intervals ..........77 Oil heater ............62 Shrink disc ............ 42 Oil inspection glass ........83 Sound emission .......... 122 Oil level ..........63, 81, 98 Sound level ..........

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