Schaeffler FAG HYDNUT-E Series User Manual
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Schaeffler FAG HYDNUT-E Series User Manual

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Hydraulic Nuts
HYDNUT..-E, HYDNUT..-E-INCH
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Summary of Contents for Schaeffler FAG HYDNUT-E Series

  • Page 1 Hydraulic Nuts HYDNUT..-E, HYDNUT..-E-INCH User manual...
  • Page 3 The maximum stroke is indicated by a red O ring, thus reliably preventing excessive outward movement of the piston and all the resulting consequences. Simple visual inspection is sufficient during use. Current version A current version of this user manual can be found at http://medien.schaeffler.com using the search term BA4.

  • Page 4: Table Of Contents

    Function ................... 17 Commissioning Checking the hydraulic nut ............20 Lifting the hydraulic nut out of the transport container and transporting the hydraulic nut ........... 21 Preparation for mounting ............23 Mounting the hydraulic nut ............25 BA 04 Schaeffler Technologies...
  • Page 5 Dismounting the seals .............. 58 Cleaning the components ............59 Mounting the seals ..............60 Mounting the annular piston............. 61 Disposal Regulations ................63 Technical data, accessories ....................64 and replacement parts Appendix EC Declaration of Conformity............. 65 Schaeffler Technologies BA 04...

  • Page 6: About The User Manual

    This user manual is supplied with each hydraulic nut and can also be ordered retrospectively. An electronic version (.pdf) is available in the Mediathek on the Schaeffler page of the Internet. Serious injuries may occur due to the escape under high pressure...

  • Page 7: Usage For The Intended Purpose

    Protective equipment Personal protective equipment is intended to protect operating personnel against health hazards. This comprises safety goggles, safety shoes and gloves and these must be used in the interests of personal safety. Schaeffler Technologies BA 04...

  • Page 8: Safety Regulations

    +5 °C to +40 °C ■ clean environment. Maintenance The hydraulic nut must undergo regular maintenance, see page 56. Only original replacement parts may be used. Conversion The hydraulic nut must not be converted. BA 04 Schaeffler Technologies...

  • Page 9: Scope Of Delivery

    Allocation, see tables, page 11. Hydraulic nut Clamping screws Screw plug Dismounting screws Hand lever Valve nipple Replacement seals for outer side, inner side and red O ring User manual Figure 1 Scope of delivery HYDNUT...-E(-INCH) Schaeffler Technologies BA 04...

  • Page 10: Accessories

    FAG Spherical Roller Bearings with Tapered Bore. Damage during transit Any damage during transit must be reported as a complaint to the carrier. Defects Any defects must be reported promptly to Schaeffler Technologies AG & Co. KG. BA 04 Schaeffler Technologies...

  • Page 11: Description Press Ring

    This prevents escape of the hydraulic oil in the ring gap. Red O ring The red O ring is made from PVC and indicates that the annular piston may only be moved out as far as this position. Schaeffler Technologies BA 04...

  • Page 12: Press Ring

    (not included in the scope of delivery). Alternatively, a round sling or steel rope of sufficient load carrying capacity can be used for transport. The steel rope may only be wrapped around the outer cylindrical surface of the press ring. BA 04 Schaeffler Technologies...
  • Page 13 Only use hand levers that are of precisely the stated diameter and  up to the maximum stated length. Hand lever Designation Length Diameter for HYDNUT..-E from HYDNUT50-E HYDNUT190-E HYDNUT200-E HYDNUT395-E HYDNUT400-E HYDNUT1180-E Hand lever Designation Length Diameter for HYDNUT..-E-INCH from HYDNUT90-E-INCH HYDNUT190-E-INCH HYDNUT200-E-INCH HYDNUT380-E-INCH HYDNUT400-E-INCH HYDNUT530-E-INCH Schaeffler Technologies BA 04...
  • Page 14 At an offset of 180° to this hole, the end face has a second threaded 1/ 4 hole G . During operation, the valve nipple is screwed into these holes. At the time of delivery, the screw plug is screwed in at this point. BA 04 Schaeffler Technologies...
  • Page 15 The material of the screw was selected such that the clamping shank is not damaged by the screw. HYDNUT..-E Designation Length Thread from HYDNUT50-E HYDNUT195-E HYDNUT200-E HYDNUT925-E HYDNUT930-E HYDNUT1180-E HYDNUT..-E-INCH Designation Length Thread from HYDNUT90-E-INCH HYDNUT190-E-INCH HYDNUT200-E-INCH HYDNUT530-E-INCH Schaeffler Technologies BA 04...

  • Page 16: Annular Piston

    58. HYDNUT..-E Designation Thread from HYDNUT410-E HYDNUT595-E 3 M6 HYDNUT600-E HYDNUT1180-E 3 M8 HYDNUT..-E-INCH Designation Thread from HYDNUT410-E-INCH HYDNUT530-E-INCH 3 M6 BA 04 Schaeffler Technologies...

  • Page 17: Other Components

    ■ must be suitable for the hydraulic oil used ■ must not exceed the maximum permissible operating period. Further information on the hydraulic line used is given in the documentation for the hydraulic line. Schaeffler Technologies BA 04...
  • Page 18 37. Further information on the pressure generation device used is given in the documentation for the pressure generation device. Hydraulic oil The hydraulic oil used must correspond to a particular viscosity class, see page 64. BA 04 Schaeffler Technologies...

  • Page 19: Function

    The annular piston undergoes movement, Figure 6. Pressure generation device Hydraulic line 1/ 4 Hydraulic nut, threaded hole G 1/ 4 Valve nipple G Pressure chamber Screw plug Direction of movement of annular piston Figure 6 Functional principle Schaeffler Technologies BA 04...
  • Page 20 Mounting on shaft Mounting on adapter sleeve, oil pressure method Mounting on withdrawal sleeve Mounting on withdrawal sleeve, oil pressure Figure 7 Mounting method BA 04 Schaeffler Technologies...
  • Page 21 However, the hydraulic nut can remain on the shaft in dismounting and intercepts the bearing when it abruptly becomes loose in dismounting. Dismounting with withdrawal sleeve Dismounting with adapter sleeve Figure 8 Dismounting method Schaeffler Technologies BA 04...

  • Page 22: Commissioning Checking The Hydraulic Nut

    Diameter and thread information Figure 9 Checking the hydraulic nut Check also whether the thread is damaged. A hydraulic nut with a damaged thread must not be used, since it can damage the thread on the shaft. BA 04 Schaeffler Technologies...

  • Page 23: Lifting The Hydraulic Nut Out Of The Transport Container And Transporting The Hydraulic Nut

    An unsuitable lifting tool can fail. A falling hydraulic nut can cause WARNING injury. Use a suitable lifting tool that can safely support the mass of the hydraulic nut. Ensure that nobody is underneath the hydraulic  nut at any time during transport. Secure the hazard area. Schaeffler Technologies BA 04...
  • Page 24 Fit the securing belt. Slowly lift the hydraulic nut until it hangs vertical, Figure 11.  Wooden crate Hydraulic nut Valve nipple Clevis Hook Securing belt Figure 11 Delivered condition  Transport the hydraulic nut without shocks or vibration. BA 04 Schaeffler Technologies...

  • Page 25: Preparation For Mounting

    A seal with the following characteristics is suitable: ■ type: – CEJN rubber/metal seal ■ operating pressure: – 1500 bar ■ dimensions: 1/ 4 – G (20,57 mm 13,74 mm 3 mm) ■ material: – high grade steel/fluoro rubber (FKM). Schaeffler Technologies BA 04...
  • Page 26  thread. Damage to the thread through scoring if a lubricant is not used. Apply lubricant to the thread of the hydraulic nut, for example using  ARCANOL-MOUNTING-PASTE. Damaged thread Undamaged thread Lubricant Figure 14 Preparation BA 04 Schaeffler Technologies...

  • Page 27: Mounting The Hydraulic Nut

    The hydraulic nut is mounted and can be bled. Shaft Hydraulic nut Rotary motion Half thread width of press ring 1/ 4 Radial threaded hole G upper position Annular piston, end face Inner ring, end face Figure 15 Mounting Schaeffler Technologies BA 04...
  • Page 28 During mounting, secure  the hydraulic nut against tilting and falling.  Align the mounting aid at 90° and concentrically to the axis, Figure 16. Figure 16 Aligning the mounting aid BA 04 Schaeffler Technologies...
  • Page 29  construction.  Set down the hydraulic nut carefully on the mounting aid using a crane, Figure 17. Shaft Hydraulic nut Figure 17 Setting down the hydraulic nut  Remove the securing belt. Schaeffler Technologies BA 04...
  • Page 30 Rotate the hydraulic nut until the start of the thread on the hydraulic nut and the start of the thread on the shaft journal or sleeve coincide, Figure 18. Mounting aid Hydraulic nut, start of thread Shaft, start of thread Figure 18 Start position BA 04 Schaeffler Technologies...
  • Page 31 Move the hydraulic nut in the direction of the shaft until the start of the thread on the hydraulic nut and the start of the thread on the shaft journal or sleeve are in contact, Figure 19. Shaft Hydraulic nut Figure 19 Displacing the hydraulic nut Schaeffler Technologies BA 04...
  • Page 32  At least half the thread width must be engaged. Shaft Hydraulic nut Mounting aid Rotary motion Hand lever Half thread width of press ring Annular piston, end face Inner ring, end face Figure 20 Mounting BA 04 Schaeffler Technologies...
  • Page 33 1/ 4 hole G  If necessary, apply a mounting ring, see page 32.  The hydraulic nut is mounted and can be bled. 1/ 4 Radial threaded hole G Figure 21 Loosening the hydraulic nut slightly Schaeffler Technologies BA 04...

  • Page 34: Applying The Mounting Ring

     Produce the mounting ring. For the diameter tolerance to be observed, please contact us in advance. Apply the mounting ring, Figure 22.  Hydraulic nut, width = 100% Interference Mounting ring Figure 22 Mounting ring BA 04 Schaeffler Technologies...

  • Page 35: Applying The Intermediate Ring

     Measure the necessary width.  Produce the intermediate ring. For the tolerance to be observed, please contact us in advance. Apply the intermediate ring, Figure 23.  Cage projection Maximum tilting Figure 23 Intermediate ring Schaeffler Technologies BA 04...

  • Page 36: Selecting And Mounting The Dial Gauge

    Depending on the hydraulic nut used, the dial gauge must be of certain dimensions and have a suitable measurement range. For some hydraulic nuts, it is necessary to use an extension, see table, page 35. BA 04 Schaeffler Technologies...
  • Page 37 HYDNUT400-E(-INCH) HYDNUT420-E(-INCH) 58 HYDNUT430-E HYDNUT450-E HYDNUT460-E(-INCH) HYDNUT470-E HYDNUT480-E(-INCH) HYDNUT490-E HYDNUT500-E(-INCH) HYDNUT520-E(-INCH) 66 HYDNUT530-E(-INCH) HYDNUT560-E HYDNUT570-E HYDNUT600-E HYDNUT610-E HYDNUT680-E HYDNUT690-E HYDNUT740-E HYDNUT750-E HYDNUT760-E HYDNUT780-E HYDNUT800-E HYDNUT830-E HYDNUT900-E HYDNUT930-E HYDNUT1000-E HYDNUT1060-E – HYDNUT1080-E – HYDNUT1120-E – HYDNUT1180-E – Schaeffler Technologies BA 04...
  • Page 38 Slide the dial gauge in by at least the requisite drive-up distance.  Lightly tighten the clamping screw. Clamping screw Locating hole for dial gauge Dial gauge Measuring pin Drive-up distance Figure 25 Mounting the dial gauge BA 04 Schaeffler Technologies...

  • Page 39: Selecting The Pressure Generation Device

    HYDNUT480-E(-INCH) HYDNUT490-E(-INCH) HYDNUT530-E(-INCH) HYDNUT530-E HYDNUT655-E HYDNUT670-E HYDNUT760-E HYDNUT780-E HYDNUT900-E HYDNUT930-E HYDNUT1000-E HYDNUT1060-E HYDNUT1080-E HYDNUT1120-E – HYDNUT1180-E – Assuming usage of a hydraulic line with a length of 1 m and an inside diameter of 4 mm. Schaeffler Technologies BA 04...

  • Page 40: Operation

    Avoid skin contact if possible. Wear gloves. Protect uncovered skin  by means of skin cream. Do not inhale vapours or fumes. Contaminated hydraulic oil can damage seals. Damaged seals must be replaced promptly.  Only use clean hydraulic oil. BA 04 Schaeffler Technologies...

  • Page 41: Maximum Pressure

    Technical data such as dimensions and the permissible pressure for hydraulic nuts can be found in a Technical Product Information. This is available as a PDF file on the Internet under the address http://www.schaeffler.de, menu item Mediathek. ■ Further information TPI 196, Hydraulic Nuts.

  • Page 42: Mounting The Hydraulic Hose

    1/ 4 Observe the maximum tightening torque for the threaded hole G (oil connector) in the hydraulic nut, see page 64. Observe the maximum tightening torque for the oil connector  on the pressure generation device. BA 04 Schaeffler Technologies...
  • Page 43 Lay the hydraulic hose with the specified bending radius to the pressure generation device.  Observe the instructions for the hydraulic hose. Hose fastener on hydraulic nut Hose fastener on pressure generation device Figure 28 Connecting the pressure generation device Schaeffler Technologies BA 04...

  • Page 44: Bleeding

    1/ 4 Screw the screw plug back into the upper threaded hole G observe the tightening torque, see page 64.  Remove the collector device.  Dispose of the collected hydraulic oil correctly or send for recycling. BA 04 Schaeffler Technologies...
  • Page 45 Screw plug, 1/ 4 threaded hole G at top Collector device Pressure generation device Manometer Figure 29 Bleeding Schaeffler Technologies BA 04...

  • Page 46: Pressing The Component Into Place

    O ring. The press ring can only be pressed out while the red O ring is visible, Figure 31. Annular piston Press ring Red O ring Drive-up distance, maximum Figure 31 Red O ring BA 04 Schaeffler Technologies...
  • Page 47  Stand to one side, not directly behind the hydraulic nut.  Build up pressure in the hydraulic nut. Press the requisite volume into the hydraulic nut until the requisite drive-up distance is reached. Schaeffler Technologies BA 04...
  • Page 48 Wait 30 min so that the oil can escape. Pressure decrease The following steps are always carried out:  in hydraulic nut Switch the pressure generation device for the hydraulic nut to unpressurised.  Measure the radial or axial internal clearance. BA 04 Schaeffler Technologies...

  • Page 49: Pressing Back The Annular Piston

    The hydraulic oil is pressed back into the pressure generation device. Rotary motion Hydraulic hose Pressure generation device, pressure-free Pressing back the annular piston  Loosen the hose fastener.  Remove the hydraulic hose.  The hydraulic nut can now be removed and transported away. Schaeffler Technologies BA 04...

  • Page 50: Pressing Back The Annular Piston

    A hydraulic may only be detached after switching to  unpressurised.  Switch the system to unpressurised, see the user manual of the pressure generation device.  Undo the hose fastener on the hydraulic nut, then remove the hose. BA 04 Schaeffler Technologies...
  • Page 51 Rotate the hydraulic nut until the threaded hole for the folding clevis is in the upper position. Shaft Mounting aid Rotary motion 1/ 4 Radial threaded hole G position above Figure 35 Unscrewing the hydraulic nut Schaeffler Technologies BA 04...
  • Page 52  Hang a hook in the clevis or thread in a carrying sling.  Fit the securing belt.  The hydraulic nut can now be transported. Folding clevis Hook Securing belt Figure 36 Preparation for transport BA 04 Schaeffler Technologies...
  • Page 53 Transport the hydraulic nut without shocks or vibration, Figure 37.  Hydraulic nut Clevis Securing belt Figure 37 Transport Schaeffler Technologies BA 04...
  • Page 54 The hydraulic oil is pressed back into the pressure generation device. Screw clamp Rotary motion Figure 38 Pressing back the annular piston  Remove the hydraulic hose.  The hydraulic nut can now be transported away. BA 04 Schaeffler Technologies...
  • Page 55 Once the annular piston has been pressed back far enough that the red O ring is no longer visible, the hydraulic nut can be transported. Screw clamp Hydraulic line Pressure generation device Figure 39 Pressing back the annular piston Schaeffler Technologies BA 04...

  • Page 56: Decommissioning

    Store the hydraulic nut lying flat with the annular piston facing up in the delivery packaging, Figure 40.  Hydraulic nut Box or wooden transport crate Figure 40 Decommissioning Alternatively, a hydraulic nut can be stored lying on wooden ledges and covered. BA 04 Schaeffler Technologies...

  • Page 57: Troubleshooting

    Collect the escaping hydraulic oil. Loosen the screw plug, then press the annular piston back into the press ring If the defect cannot be eliminated, please contact Schaeffler Customer Service. Troubleshooting Malfunction Possible cause Remedy Pressure generation device...

  • Page 58: Maintenance Maintenance Plan

    Before replacing the seals, check whether suitable replacement seals are available. The replacement of seals comprises the following operations: ■ Dismount the annular piston. ■ Dismount the seals. ■ Clean the components. ■ Mount the seals. ■ Mount the annular piston. BA 04 Schaeffler Technologies...

  • Page 59: Dismounting The Annular Piston

     If the annular piston is positioned obliquely, strike the raised point lightly using a plastic hammer. Support Screw plug Valve nipple Press ring Dismounting screw Red O ring Figure 41 Pressing out the annular piston Schaeffler Technologies BA 04...

  • Page 60: Dismounting The Seals

    When removing the seals, ensure that the seal slots remain undamaged. For dismounting, use a soft tool made from wood or plastic. Lever the seals out of the seal slots, Figure 43.  Seal Seal slot Wooden or plastic tool Figure 43 Dismounting the seals BA 04 Schaeffler Technologies...

  • Page 61: Cleaning The Components

    Clean the press ring and annular piston. Carry out particularly thorough cleaning of the seal slots, piston surface and piston guide face, Figure 44. Press ring Annular piston Seal slots Piston surface Piston guide face Figure 44 Cleaning the components Schaeffler Technologies BA 04...

  • Page 62: Mounting The Seals

    Oil both seal slots using hydraulic oil, Figure 45.  Seal slot Hydraulic oil Figure 45 Oiling the seal slots Insert new seals in the annular piston, Figure 46.  Seal Piston guide face Figure 46 Mounting the seals BA 04 Schaeffler Technologies...

  • Page 63: Mounting The Annular Piston

    Oil the piston guide face using hydraulic oil, Figure 47.  Piston guide faces Hydraulic oil Figure 47 Oiling the piston guide faces Mounting the annular piston During mounting, ensure that the annular piston is fitted straight, Figure 48. Figure 48 Mounting Schaeffler Technologies BA 04...
  • Page 64 Mounting the annular piston  Remove the screw clamps.  Strike the annular piston lightly using a plastic hammer at a spacing of 120°, until the annular piston is completely in contact with the press ring. BA 04 Schaeffler Technologies...

  • Page 65: Disposal

    Disposal A hydraulic nut can be returned to Schaeffler for disposal. Risk of injury due to skin contact with hydraulic oil. CAUTION  Wear gloves when dismantling the hydraulic nut. After dismounting, the press ring and annular piston can be disposed of together with other steel parts.

  • Page 66: Technical Data, Accessories

    Designation Description Mass ARCANOL-MOUNTINGPASTE-70G Mounting paste ARCANOL-MOUNTINGPASTE-250G Mounting paste Replacement parts Designation Description Mass HYDNUT.PLUG_G1_4.PRT Screw plug 0,05 HYDNUT...SEAL Replacement seals, set HYDNUT-HANDHEBEL-D10.PRT Hand lever, HYDNUT-HANDHEBEL-D12.PRT Hand lever, HYDNUT-HANDHEBEL-D16.PRT Hand lever, Only use FAG original accessories. BA 04 Schaeffler Technologies...

  • Page 67: Appendix Ec Declaration Of Conformity

    Appendix This appendix contains the Declaration of Conformity for hydraulic nuts. EC Declaration of Conformity EC Declaration of Conformity for hydraulic nuts HYDNUT..-E, Figure 50. Figure 50 EC Declaration of Conformity Schaeffler Technologies BA 04...
  • Page 68 Internet www.schaeffler.de/en We reserve the right to make technical E-Mail faginfo@schaeffler.com changes. In Germany: © Schaeffler Technologies AG & Co. KG Phone 0180 5003872 Issued: 2018, April 0180 5003873 This publication or parts thereof may not Aus anderen Ländern: be reproduced without our permission.

This manual is also suitable for:

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