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Summary of Contents for Kracht KM 5
- Page 1 D.0028490002 Operating instructions (Translation) High pressure gear motor KM 5 English 02 • 10/06/2025...
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Page 2: Table Of Contents
Table of content Kracht GmbH Table of content 1 General ............................1.1 About the documentation..........................1.2 Manufacturer address ............................ 1.3 Other applicable documents ........................1.4 Symbols................................2 Safety............................2.1 Intended use ..............................2.2 Personal qualification ............................. 2.3 Basic safety instructions .......................... - Page 3 Kracht GmbH Table of content 6.4.2 Feed line............................23 6.4.3 Drain line and leakage oil line ....................23 6.4.4 Connection line installation ...................... 24 6.5 Change of the direction of rotation......................24 7 Commissioning ........................... 25 7.1 Safety instructions for start-up........................25 7.2 Preparation .................................
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Page 4: General
These operating instructions describe the installation, operation and maintenance of the follow- ing product: High pressure gear motor KM 5 These operating instructions are an integral part of the product and must be kept in the imme- diate vicinity of the product and accessible to the personnel at all time. -
Page 5: Symbols
Kracht GmbH General | 1 1.4 Symbols DANGER Identification of an immediate hazard, which can lead to death or severe bodily injury if not avoided. WARNING Identification of a potential medium risk hazard, which can lead to death or severe bodily injury if not avoided. -
Page 6: Safety
2 | Safety Kracht GmbH 2 Safety 2.1 Intended use 1. The product has been designed for operation with fluids. Dry operation is not permitted. 2. The product may only be operated when completely filled. 3. The fluid must be compatible with the materials used in the product. Chemical expertise is required for that. -
Page 7: Basic Safety Instructions
Kracht GmbH Safety | 2 2.3 Basic safety instructions NOTICE Basic safety instructions Non-compliance can lead to hazards for people and the unit. a) Follow existing regulations for accident prevention and safety at work as well as the internal regulations of the operating company. - Page 8 2 | Safety Kracht GmbH DANGER Rotating parts Risk to life due to entanglement or winding of parts of the body, hair or clothing items. a) Take measures to prevent accidental touching of rotating parts. WARNING Rotating parts Risk of injury caused by ejected parts a) Enclose rotating parts so that in the event of fracture or malfunction, there is no risk caused by ejected parts.
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Page 9: Device Description
Kracht GmbH Device description | 3 3 Device description 3.1 Functional principle This series pumps are external gear motors types that work according to the positive displace- ment principle. Feed side Drain side High pressure gear motors are used to convert hydraulic energy into mechanical energy. The hydraulic energy is generally generated by an upstream pump. -
Page 10: Variants
3 | Device description Kracht GmbH 3.2 Variants Gear pump Housing Slide plate Gears O-ring Plain bearings Flange cover Roller bearings Rotary shaft seal Output shaft end Leak oil connection 88028490002-02... -
Page 11: Type Key
Kracht GmbH Device description | 3 3.3 Type key Ordering example 5/250 1 F 3 0 E 1 Z 0 G D W /… 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. -
Page 12: Rotary And Flow Direction
3 | Device description Kracht GmbH Explanation of type key 16. Gear material E 16MnCrS5 - 1.7139 17. Gear coating 0 Without 18. Type of bearing G Plain bearings 19. Material bearing D Multi layer friction bearings (contains lead) 20. Seal type W Rotary shaft seal 21. -
Page 13: Shaft Ends
Kracht GmbH Device description | 3 3.6 Shaft ends Shaft end Profile Diametral pitch Number of (DP) teeth SAE C 12/24 31.23 W40x2 5480 39.6 Shaft end Special number 31.75 -0.05 38.1 35.2 (SAE 1 1/4") 88028490002-02... -
Page 14: Technical Data
4 | Technical data Kracht GmbH 4 Technical data 4.1 General General information Mounting position External loads on shaft Axial and radial forces are not allowed Speed Nominal sizes [} 14] 4.5 bar (n= 1000) Leakage oil back-pres- T max sure 2.5 bar (n= 1800) -
Page 15: Allowable Pressures
Kracht GmbH Technical data | 4 4.3 Allowable pressures Nominal Operating pres- Pressure peaks Speed Minimum speeds sure at p=p b max. max. [bar] 2000 1800 1500 4.4 Permissible temperature range Sealing material Fluid temperature ϑ ϑ [°C] ϑ [°C]... -
Page 16: Dimensions
4 | Technical data Kracht GmbH 4.7 Dimensions The dimensions of the product are given in the technical data sheets. 88028490002-02... -
Page 17: Transport And Storage
Kracht GmbH Transport and storage | 5 5 Transport and storage 5.1 General a) After receiving the delivery, check the product for transport damage. b) If transport damage is found, the manufacturer and the transport company must be notified immediately. The product must then be replaced or repaired. -
Page 18: Storage Conditions
5 | Transport and storage Kracht GmbH Products with EPDM seals are not mineral oil resistant and their function is not tested. The in- ternal parts are not preserved. If the product is not put into operation immediately, all surfaces exposed to corrosion must be protected by suitable preservation measures. -
Page 19: Installation
Kracht GmbH Installation | 6 6 Installation 6.1 Safety instructions for installation DANGER Hazardous fluids Danger to life when handling hazardous fluids a) Comply with the safety data sheets and regulations on handling the hazardous fluids. b) Collect and dispose of hazardous fluids so that no hazard is created for persons or the en- vironment. -
Page 20: Noise Reduction
6 | Installation Kracht GmbH WARNING Failure of pressure bearing parts due to overload Risk of injury from flying parts. Risk of injury due to splashing fluids. a) Before carrying out any work, depressurise the product and all connection pipes. -
Page 21: Mechanical Installation
Kracht GmbH Installation | 6 6.3 Mechanical installation 6.3.1 Preparation a) Check the product for transport damage and contamination. b) Check the product for smooth and easy movement. c) Remove any preservative present. d) Clean all lines. ð Only use cleaning agents that are compatible with the materials used. - Page 22 6 | Installation Kracht GmbH CAUTION Hot surfaces Burns of the skin on contact. a) Wear protective gloves at temperatures ≥48°C. Tightening torques [Nm] Fastening screws Hexagonal nut M12x1.5 M14x1.5 Screws/Nuts with min. strength class 10.9/12.9 NOTICE a) Comply with the allowable displacement values of the coupling.
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Page 23: Connection Lines
Kracht GmbH Installation | 6 6.4 Connection lines 6.4.1 General WARNING Failure of pressure bearing parts due to overload Risk of injury from flying parts. Risk of injury due to splashing fluids. a) Use only connections and lines approved for the expected pressure range. -
Page 24: Connection Line Installation
6 | Installation Kracht GmbH – Ensure that all technically required suction filters/suction baskets are appropriately di- mensioned. – Comply with the recommended flow velocity in the drain line (0.5 m/s - 1.5 m/s). ATTENTION Install a pressure relief valve with return to the reservoir between 2 series connected motors. -
Page 25: Commissioning
Kracht GmbH Commissioning | 7 7 Commissioning 7.1 Safety instructions for start-up DANGER Hazardous fluids Danger to life when handling hazardous fluids a) Comply with the safety data sheets and regulations on handling the hazardous fluids. b) Collect and dispose of hazardous fluids so that no hazard is created for persons or the en- vironment. -
Page 26: Preparation
7 | Commissioning Kracht GmbH 7.2 Preparation a) Before starting the system make sure that a sufficient quantity of the service fluid is extant to avoid dry running. This must be taken into account especially with large line volumes. b) Check all fastening screws on the product. -
Page 27: Removal
Kracht GmbH Removal | 8 8 Removal 8.1 Safety instructions for disassembly DANGER Hazardous fluids Danger to life when handling hazardous fluids a) Comply with the safety data sheets and regulations on handling the hazardous fluids. b) Collect and dispose of hazardous fluids so that no hazard is created for persons or the en- vironment. -
Page 28: Dismantling
8 | Removal Kracht GmbH ATTENTION Blocking of the product due to curing media Curing media can mechanically block the product and make it unusable. a) Clean the product immediately after operation with curing media. 8.2 Dismantling a) Depressurise and de-energise the system. -
Page 29: Maintenance
Kracht GmbH Maintenance | 9 9 Maintenance 9.1 Safety instructions for maintenance DANGER Hazardous fluids Danger to life when handling hazardous fluids a) Comply with the safety data sheets and regulations on handling the hazardous fluids. b) Collect and dispose of hazardous fluids so that no hazard is created for persons or the en- vironment. -
Page 30: Maintenance Work
9 | Maintenance Kracht GmbH 9.2 Maintenance work Checking and documentation of the operating data Regular checking and documentation of all operating data helps to detect faults at an early stage. – Perform the maintenance work according to specifications. – Replace defective or worn components. -
Page 31: Maintenance Table
Kracht GmbH Maintenance | 9 9.4 Maintenance table 9.4.1 Maintenance table Additional in- formation 9.4.2 Check the operating pressure 9.4.3 Check the media temperature 9.4.4 Check the device temperature 9.4.5 Check the equipotential bonding 9.4.6 Check the condition of the operating fluid 9.4.7... -
Page 32: Check The Operating Pressure
9 | Maintenance Kracht GmbH 9.4.2 Check the operating pressure The operating pressure is indicated by the pressure gauges. – If there is no operating pressure, check the individual components of the product. – Comply with the product-specific data sheets/operating instructions. -
Page 33: Visual Check Of The Gearbox Condition
Kracht GmbH Maintenance | 9 9.4.10 Visual check of the gearbox condition The driving shaft pinion and driven shaft pinion are wearing parts. In case of excessive wear, the parts or the pump must be replaced. Important places to check are the surfaces opposite the shaft seal and bearing bushes, end faces of the driving shaft pinion and driven shaft pinion as well as the tooth flanks. -
Page 34: Replacing The Shaft Seal
9 | Maintenance Kracht GmbH 9.4.17 Replacing the shaft seal With the appropriate know-how and adequate equipment, the repair can also be carried out by the installer/operating company. To this end, if necessary, request spare parts and assembly drawings from the manufacturer. -
Page 35: Repair
Kracht GmbH Repair | 10 10 Repair 10.1 Safety instructions for repairs DANGER Hazardous fluids Danger to life when handling hazardous fluids a) Comply with the safety data sheets and regulations on handling the hazardous fluids. b) Collect and dispose of hazardous fluids so that no hazard is created for persons or the en- vironment. -
Page 36: General
10 | Repair Kracht GmbH 10.2 General Corrective maintenance includes: 1. Troubleshooting Finding damage, determining and localising the cause of the damage. 2. Damage repair Removing the primary causes and replacing or repairing defective components. Repairs are generally carried out by the manufacturer. -
Page 37: Fault Table
Kracht GmbH Repair | 10 10.3 Fault table Fault Potential causes Possible measures Increased noise Foreign bodies in the feed line/ Clean feed line/drain line drain line Cavitation of the motor Adjust the temperature of me- Fluid temperature too low... - Page 38 10 | Repair Kracht GmbH Leckage Comply with maintenance in- tervals Lack of maintenance Replace seals Mechanical damage Replace seals Check operating data Thermal overload Replace seals Check operating data Pressure too high Replace seals Check operating data Gas content in media too high...
- Page 39 Kracht GmbH Repair | 10 Unit does not start Correct the direction of rota- Wrong direction of rotation tion Minimum filling level in the Refill media reservoir tank undercut Closed/throttled blocking ele- Open the shut-off element ment Foreign bodies in the feed line/...
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