Brake Service Manual – FBH05 Dry Series
Contents
1. such as friction plates 3 amp 6 and springs 22 amp 23 The frequency of inspection depends on the duty demanded of the brake Dismantling and dis assembly To remove brake from its installed position reverse procedure previously described in the Installation instructions Place the complete brake assembly on a clean dry workbench Remove external gaskets 5 as necessary REFER TO DIAGRAMS FOR THE FOLLOWING 1 Supporting brake on face A remove the four socket head cap screws SHCS and washers items 13 amp 14 in equal increments to ensure the spring pressure within the brake is reduced gradually and evenly Alternatively if a press is available the cylinder housing 8 can be restrained on face B while removing the four SHCS and washers 13 amp 14 The brake assembly can now be fully dismantled and the parts examined 2 Remove cylinder housing 8 and piston 9 sub assembly and dismantle if required removing O ring seals 15 amp 17 and backing rings 16 amp 18 as necessary Bearing 10A can be pressed out after first removing internal retaining ring 11B 3 Remove gasket 7 from housing 2 4 Remove friction plates 3 amp 6 and pressure plate 4 Important Friction faces must not come into contact with oil or grease as this will seriously reduce the brake torque capacity 5 Remove 2 off dowel pins 19 6 Remove springs 22 amp 23 Note See chart on page 4 f2. 002535 Backing Ring as S009517 S009015 Hexagon Plug S009019 Plastic Plug TS ee CHB 1701 Outer Spring CHB 1702 Inner Spring SSS EE ee Quantity of compression springs items 22 amp 23 will vary depending upon the brake model used see chart on sheet 4 for further information doo L od 7 Items marked thus are recommended spares Item 5 is an accessory kit supplied with each brake TO on ii NW A See over for Maintenance Instructions Installation Maintenance and Spare Parts Instructions Model Standard D Mount FBH05555 D Series Spring Applied Hydraulically Released Multiple Plate Brake for Dry Operation Installation Position 1 off gasket 5 over male pilot on brake housing 4 Locate brake shaft 1 and secure brake in position using 2 off 34 UNC mounting bolts in the through mounting fixing holes provided Connect hydraulic pressure supply to brake pressure inlet port Ensure that the hydraulic pressure is set to the required level up to a maximum of 3000 psi 200 bar and check that the brake disengages and re engages correctly Maintenance The brake is required to be kept in good working order and must be included in the planned maintenance program for the equipment to which the brake is installed This must include torque testing together with inspection and replacement of the working parts
3. FDHB0000 SK5 comprising 1 off gasket item 7 1 off gasket item 7 1 off O ring item 15 1 off bearing item 10 1 off backing ring item 16 1 off bearing item 10A 1 off O ring item 17 1 off rotary shaft seal item 12 1 off backing ring item 18 1 off internal retaining ring item 11 2 off gaskets item 5 1 off external retaining ring item 11A 1 off internal retaining ring item 11B CHART OF SPRING OPTIONS Note Two types of springs are incorporated in the FBH05 D Series Brakes CHB 1701 outer spring amp CHB 1702 inner spring Quantity of CHB 1701 Quantity of CHB 1702 Initial Release Full Release Brake Mogel inner springs outer springs Pressure psi Pressure psi FBH0555570D 8 4 65 85 FBH0555580D 10 2 75 95 FBH0555590D 12 85 FBH05555100D 12 95 FBH05555110D 14 103 FBH05555120D 16 112 FBH05555130D 16 FBH05555140D 18 Other models are available Consult Fairfield Manufacturing Company Inc for further information
4. angement for the particular brake model used d Assembly sequence of friction plates 3 amp 6 See diagram 1 Lightly lubricate rotary shaft seal 12 and assemble to housing 2 taking care not to damage seal lip 2 Apply ring of Loctite 641 or equivalent adhesive to full circumference of housing 2 bearing recess adjacent to shoulder Apply complete coverage of Loctite 641 to outside diameter of bearing 10 and assemble fully in housing 2 retaining with internal retaining ring 11 Remove excess adhesive with a clean cloth Secure and seal bearing inner ring to shaft 1 using Loctite 641 applied to bearing inner diameter retaining with external retaining ring 11A Remove any excess adhesive with a clean cloth Installation Maintenance and Spare Parts Instructions Model Standard D Mount FBH05555 D Series Spring Applied Hydraulically Released Multiple Plate Brake for Dry Operation 3 Assemble correct quantity of springs 22 amp 23 in orientation required 4 Lubricate O ring seals 15 amp 17 with Molykote 55M or equivalent silicon grease and assemble together with backing rings 16 amp 18 to piston 9 To ensure correct brake operation it is important that the backing rings are assembled opposite to the pressurized side of piston 9 5 Apply complete coverage of Loctite 641 to outside diameter of bearing 10A and press in to recess in cylinder 8 Assemble internal retaining ri
5. ng 11B 6 Correctly orientate piston 9 aligning spaces with the two dowel pin holes and assemble into cylinder housing 8 taking care not to damage seals and carefully lay aside 7 Locate 2 off pins 19 in housing 2 followed by pressure plate 4 and friction plates i e an inner 3 followed by an outer 6 in correct sequence 8 Position gasket 7 in correct orientation 9 Align two holes in cylinder with dowel pins 19 and assemble piston amp cylinder sub assembly to remainder of brake securing with 6 off SHCS and washers 13 amp 14 Torque tighten to 90 IbF ft 120 Nm Note The use of a suitable press hydraulic or arbor pressing down on cylinder end face B will ease assembly of the SHCS 13 Note If new friction plates have been assembled it is recommended that the friction faces are bedded in to help ensure stable torque performance Installation Maintenance and Spare Parts Instructions Model Standard D Mount FBH05555 D Series Spring Applied Hydraulically Released Multiple Plate Brake for Dry Operation SPARES KITS a Friction Disc Kit FDHB0000 SK1 comprising b Spring Kit FDHB0000 SK2 comprising 1 off pressure plate item 4 18 off outer springs CHB 1701 item 22 1 off gasket item 7 6 off outer plates item 6 c Spring Kit FDHB0000 SK3 comprising 6 off inner plates item 3 4 off inner springs CHB 1702 item 23 d Seal Kit FDHB0000 SK4 comprising e Bearing Kit
6. oerlikon fairfield Brake Service Manual FBH05 Dry Series Installation Maintenance and Spare Parts Instructions Model Standard D Mount FBH05555 D Series Spring Applied Hydraulically Released Multiple Plate Brake for Dry Operation PRE INSTALLATION CHECKS Mechanical Item PartNo Description Qty Check that in the process of unpacking the brake and ES Alle ee ee ee al subsequent handling prior to assembly the mounting 1 DHB 1000 Brake Shaft features and other parts of the brake are undamaged Ensure that the shafts to which the brake is mounted 3 DHB 1900 Inner Friction Plate 6 are clean and free from burrs and swellings Hydraulic Mechanical 6 DHB 1600 Outer Plate 6 To check brake release connect an appropriate hydraulic pressure supply set to the required level up to 8 DHB 1100 Cylinder a maximum of 3000 psi 200 bar and check that brake shaft 1 is free to rotate 10A S001911 1 Remove hydraulic supply from brake checking to ensure that the friction plates 3 amp 6 have engaged 1 thus preventing rotation of brake shaft 1 1 Important release pressure during bench testing 1 should be limited to 2000 psi 138 bar unless brake is Socket Head Cap Screw 4 fully installed using 4 off 4 UNC mounting bolts in the 4 1 1 1 1 2 1 1 through mounting holes 001683_ O Ring S002488 Backing Ring FACE C S002440 SAG 20 S
7. or spring arrangement and quantities for the particular brake model used 7 Should it be necessary to replace ball bearing 10 or shaft seal 12 reverse remainder of brake sub assembly supporting on face C of housing 2 8 Remove retaining rings 11 amp 11A 9 Using arbor press or similar to break Loctite seal remove brake shaft 1 from housing 2 and lay aside 10 Reverse housing 2 and press out ball bearing 10 Shaft seal 12 can also be removed if necessary Examination All components can now be examined and inspected paying particular attention to the following 1 Inspect friction plates 3 amp 6 and friction surface on pressure plate 4 for wear or damage 2 Examine friction plates 3 and brake shaft 1 for wear or damage to the splines 3 Examine input and output splines of brake shaft 1 for wear or damage 4 Examine compression springs 22 amp 23 for damage or fatigue 5 Check ball bearing 10 amp 10A for axial float or wear 6 Examine O ring seals 15 amp 17 and backing rings 16 amp 18 for damage OBTAIN REPLACEMENT PARTS AS REQUIRED Assembly Clean all parts thoroughly Reverse procedure previously outlined in Dismantling instructions taking particular care with a Assembly of shaft seal 12 b Assembly of bearing 10 c Quantity and orientation of springs 22 amp 23 Note See chart on back page for spring quantities and arr
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