Brake Service Manual – FBH13 Dry Series
Contents
1. Note See chart on back page for spring quantities and arrangement 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 Press shaft 1 through bearing 10 ensuring bearing inner ring is adequately supported Installation Maintenance and Spare Parts Instructions Model Short B Mount FBH13 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 7 Position gasket 7 in correct orientation 8 Align two holes in cylinder with dowel pins 19 and assemble piston amp cylinder sub assembly to 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 Correctly orientate piston 9 ali2. 1 1 1 1 1 1 1 1 2 1 1 2 2 we oea eee eee 22 ing 23 BHB 1701 Spring Blue EE EE Eee Brake shaft item 1 varies with brake model number according to spline interface BHB 1002 is used with FBH13333 D BHB 1005 is used with FBH13833 D BHB 1009 is used with FBH13838 D Quantity of compression springs items 22 amp 23 will vary depending upon the brake model used see chart on sheet 4 for further information len EA 6 6 EA A 18 S001621 Backing Ring 1 2 1 ra E e e ES Items marked thus are recommended spares Item 5 is an accessory kit supplied with each brake See over for Maintenance Instructions Installation Maintenance and Spare Parts Instructions Model Short B Mount FBH13 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 Y2 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 mainte
3. 1 off internal retaining ring item 11 1 off backing ring item 18 2 off gaskets item 5 CHART OF SPRING OPTIONS Note Two types of springs are incorporated in the FBH13 D Series Brakes BHB 1700 natural color amp BHB 1701 blue color Quantity of BHB 1700 Quantity of BHB 1701 Initial Release Full Release natural colored springs blue colored springs Pressure psi Pressure psi FBH13 08D 4 62 66 Brake Model FBH13 10D 4 78 82 FBH13 12D 6 93 99 FBH13 14D 109 115 FBH13 16D FBH13 18D FBH13 20D FBH13 22D FBH13 24D Other models are available Consult Fairfield Manufacturing Company Inc for further information
4. gning spaces with the two dowel pin holes and assemble into cylinder housing 8 taking care not to damage seals and carefully lay aside 6 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 remainder of brake securing with 6 off SHCS and washers 13 amp 14 Torque tighten to 55 IbF ft 75 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 Short B Mount FBH13 D Series Spring Applied Hydraulically Released Multiple Plate Brake for Dry Operation SPARES KITS a Friction Disc Kit AMFBH13DA1 comprising b Spring Kit AMFBHO03B1 comprising 1 off pressure plate item 4 12 off springs BHB 1700 color natural 1 off gasket item 7 2 off outer plates item 6 c Spring Kit AMFBHO3B2 comprising 2 off inner plates item 3 12 off springs BHB 1701 color blue d Seal Kit AMFBH03C1 comprising e Bearing Kit AMFBH03D1 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 rotary shaft seal item 12 1 off O ring item 17
5. ins 19 6 Remove springs 22 amp 23 Note See chart on page 4 for 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 internal retaining ring 11 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 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
6. nance program for the equipment to which the brake is installed This must include torque testing together with inspection and replacement of the working parts 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 six 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 six 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 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 p
7. oerlikon fairfield Brake Service Manual FBH13 Dry Series Installation Maintenance and Spare Parts Instructions Model Short B Mount FBH13 D Series Spring Applied Hydraulically Released Multiple Plate Brake for Dry Operation PRE INSTALLATION CHECKS Mechanical Check that in the process of unpacking the brake and subsequent handling prior to assembly the mounting features and other parts of the brake are undamaged Ensure that the shafts to which the brake is mounted are clean and free from burrs and swellings Hydraulic Mechanical To check brake release connect an appropriate hydraulic pressure supply set to the required level up to a maximum of 3000 psi 200 bar and check that brake shaft 1 is free to rotate Remove hydraulic supply from brake checking to ensure that the friction plates 3 amp 6 have engaged thus preventing rotation of brake shaft 1 Important release pressure during bench testing should be limited to 2000 psi 138 bar unless brake is fully installed using 2 off Y2 UNC mounting bolts in the through mounting holes x Wa A SE WS ML GG EE SSSSUSSSSSSSSSY PEI aN araa ESS SSS SESS 4 Item PartNo Description Qty E E ees BHB 1002 BHB 1005 BHB 1009 Brake Shaft 1 i BHB 1500 Gasket i BHB 1102 Cylinder 10 11 12 13 14 15 16 1778 9 0 1 S009016 S009015 Hexagon Plug 1
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