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Airflex

®

 DBB 8110 Brake Assembly  

E-CLCL-TT001-E   December 2012

24

 

 

138DBBS

 

 

238DBBS

 

 

338DBBS

 

 

438DBBS

 

Item  

Description

 

146328A  

 

146329A  

 

146384A  

 

146385A

 

 

Part Number  

Qty  

Part Number  

Qty  

Part Number  

Qty  

Part Number  

Qty

Mounting Flange  

513391  

513391  

513391  

513391  

1

Stud 

000245 x 00 73 

16 

000245 x 00 75 

16 

000245 x 0106  

16 

000245 x 0105  

16

Friction Disc  

513396  

513396  

513396  

513396  

8

12 

Clamp Tube  

307941-03  

16 

307941-04  

16 

307941-11  

16 

307941-10  

16

14 

Pressure Plate  

513392  

513392  

513392  

513392  

1

16 

Spring Housing  

512811  

512811  

513 764 

513 764 

1

17 

Flat Washer  

00006 7 x 0042  

32 

00006 7 x 0042  

32 

00006 7 x 0042  

32 

00006 7 x 0042  

32

18 

Locknut  

000110 x 00 75 

16 

000110 x 00 75 

16 

000110 x 00 75 

16 

000110 x 00 75 

16

19 

Cylinder  

513988  

513988  

513988  

513988  

1

20 

Hex Head Screw  

00019 7 x 1338  

16 

00019 7 x 1338  

16 

00019 7 x 1338  

16 

00019 7 x 1338  

16

21 

Inner Lip Seal  

000402 x 0005  

000402 x 0005  

000402 x 0005  

000402 x 0005  

2

22 

Outer Spring  

308035  

48 

308035  

48 

308035  

48 

308035  

48

23 

Outer Lip Seal  

000402 x 0006  

000402 x 0006  

000402 x 0006  

000402 x 0006  

2

27 

Spacer Tube  

308150-01  

16 

308150-01  

16 

308150-01  

16 

308150-01  

16

28 

Gear  

 

(not included with assembly)  

416068-####  

416069-####  

416414-####  

416461-####  

1

29 

Wear Spacer  

N/A 

N/A 

308150-05  

16 

308150-05  

32 

308150-05  

48

31 

Reaction Plate  

N/A 

N/A 

513393  

513393  

513393  

3

34 

Release Spring  

N/A 

N/A 

307992  

307992  

12 

307992  

16

52 

Inner Spring  

308034  

48 

308034  

48 

308034  

48 

308034  

48

53 

Spring Retainer  

415635  

16 

415635  

16 

415635  

16 

415635  

16

57 

Flat Head Screw  

000294 x 0405  

72 

000294 x 0405  

144  

000294 x 0405  

216  

000294 x 0405  

288

57 

Disc  

513395  

513395  

513395  

513395  

4

105  

Brass Pipe Plug  

0000 77 x 0021  

0000 77 x 0021  

0000 77 x 0021  

0000 77 x 0021  

1

 

 

150DBBS

 

 

250DBBS

 

 

350DBBS

 

 

450DBBS

 

Item  

Description

 

146524A  

 

146525A  

 

146526A  

 

146527A

 

 

Part Number  

Qty  

Part Number  

Qty  

Part Number  

Qty  

Part Number  

Qty

Mounting Flange  

515316  

515316  

515316  

515316  

1

Stud 

307111-28  

16 

307111-2 7 

16 

307111-26  

16 

307111-25  

16

Friction Block  

416691  

18 

416691  

36 

416691  

54 

416691  

72

12 

Clamp Tube  

308440-13  

16 

308440-12  

16 

308440-11  

16 

308440-10  

16

14 

Pressure Plate  

514330  

514330  

514330  

514330  

1

16 

Spring Housing  

514506  

514506  

514506  

514506  

1

17 

Flat Washer  

00006 7 x 0042  

32 

00006 7 x 0042  

32 

00006 7 x 0042  

32 

00006 7 x 0042  

32

18 

Locknut  

000110 x 00 75 

16 

000110 x 00 75 

16 

000110 x 00 75 

16 

000110 x 00 75 

16

19 

Cylinder  

514516  

514516  

514516  

514516  

1

20 

Hex Head Screw  

00019 7 x 134 7 

16 

00019 7 x 134 7 

16 

00019 7 x 134 7 

16 

00019 7 x 134 7 

16

21 

Inner Lip Seal  

000402 x 0042  

000402 x 0042  

000402 x 0042  

000402 x 0042  

2

22 

Outer Spring  

416 751-11  

112  

416 751-11  

112  

416 751-11  

112  

416 751-11  

112

23 

Outer Lip Seal  

000402 x 0044  

000402 x 0044  

000402 x 0044  

000402 x 0044  

2

27 

Spacer Tube  

308440-03  

16 

308440-03  

16 

308440-03  

16 

308440-03  

16

28 

Gear  

 

(not included with assembly)  

417277-####  

417278-####  

417279-####  

417280-####  

1

29 

Wear Spacer  

N/A 

N/A 

308546  

16 

308546  

32 

308546  

48

31 

Reaction Plate  

N/A 

N/A 

515314  

515314  

515314  

3

34 

Release Spring  

N/A 

N/A 

416 751-12  

32 

416 751-12  

48 

416 751-12  

64

52 

Inner Spring  

N/A 

N/A 

N/A 

N/A 

N/A 

N/A 

N/A 

N/A

53 

Spring Retainer  

4166 74 

16 

4166 74 

16 

4166 74 

16 

4166 74 

16

57 

Flat Head Screw  

000294 x 0405  

90 

000294 x 0405  

180  

000294 x 0405  

270 

000294 x 0405  

360

57 

Disc  

514511  

514511  

514511  

514511  

4

105  

Brass Pipe Plug  

0000 77 x 0021  

0000 77 x 0021  

0000 77 x 0021  

0000 77 x 0021  

1

DBBS Brakes

Summary of Contents for Airflex DBBS

Page 1: ...Airflex DBBS BrakeAssemblies Installation Operation and Maintenance Manual DBB 8110 BC435263268970en 000101...

Page 2: ...o this information faulty Installation Operation or Maintenance may result in personal injury or equipment damage Caution Use Only Genuine Airflex Replacement Parts The Airflex Division of Danfoss Pow...

Page 3: ...y System 08 3 0 OPERATION 09 3 1 Pressure and Speed Limits 09 3 2 Initial Operation 09 3 3 Periodic Inspection 11 4 0 MAINTENANCE 11 4 1 Wear Limits 11 4 2 Wear Adjustment 11 4 3 Friction Disc Replace...

Page 4: ...Parameters 9 7 Wear Limits for DBBS Components 13 8 Wear Gap Values 14 9 Power Head Weights 14 Figure No FigureTitle Page No 1 DBBS Cross Section and Item Numbers 5 2 Proper vs Improper Alignment of...

Page 5: ...ing Housing 17 Flat Washer 18 Locknut 19 Cylinder 20 Hex Head Screw 21 Inner Lip Seal 22 Spring Item Description ITEM DESCRIPTION 23 Outer Lip Seal 27 Spacer Tube 28 Gear 29 Wear Spacer 31 Reaction Pl...

Page 6: ...diameter discs i e 125DBBS 225DBBS etc 1 1 4 This manual includes metric equivalents usually shown in parentheses following the U S measurement system value Be sure to use the correct value 1 2 How I...

Page 7: ...r pressure is 150 psig 10 3 bar for the 50DBBS Application of pressure exceeding maximum allowable may result in damage to the brake 2 2 3 Apply a light coat of anti seizing compound to the shaft 2 2...

Page 8: ...reamed after cutting to eliminate possible restrictions 2 3 2 2 Keep the number of elbows to a minimum to ensure consistent response 2 3 2 3 Spool type solenoid valves are not recommended Use poppet t...

Page 9: ...til the friction couple wears in 3 2 1 2 The shaft on which the brake discs are mounted should be free to rotate to allow for run in On drawworks applications disconnect the wire rope from the drawwor...

Page 10: ...isted in Table 6 should provide a dynamic torque target value as listed and resultant power target at the brake speed listed Since new friction torque will be lower at the start of wear in procedure p...

Page 11: ...remove the brass drain plug 105 and purge condensation from the cylinder Replace the brass drain plug with sealant and check for air leaks 4 0 Maintenance Warning Prior to performing any maintenance o...

Page 12: ...spacers and adjustment can be conducted without full disassembly Check the date code on your brake to verify the date of manufacture 4 2 2 Wear Adjustment with Solid Wear Spacers Note A Procedures for...

Page 13: ...ylinder wall Original free height shown on the Maximum free height shown table below Springs must be 22 34 52 Spring Spring Free Height on the table below replaced on complete sets Backlash is measure...

Page 14: ...nting flange TABLE 8 Wear Gap Values Inches mm X Gap Gap Y Gap X Gap Required for Y Gap gap required for Disc Size Qty of New Gap Adjustment New Gap Adjustment Inches Discs inch mm inch mm inch mm inc...

Page 15: ...Airflex DBB 8110 Brake Assembly E CLCL TT001 E December 2012 15 Figure 6 Figure 9 Figure 7 Figure 8 DBBS Brakes...

Page 16: ...2 and slide the pressure plate cylinder assembly onto the clamp tubes 4 2 2 9 Lubricate the threads on the ends of the studs with 30 wt oil or anti seizing compound and install the locknuts 18 washers...

Page 17: ...release springs is relieved allowing for access to the wear spacers It may be necessary to push the reaction plate s away from the mounting flange so that the release springs can be moved to gain acc...

Page 18: ...d happen to come loose remove it completely and clean the threads on the stud and the threads in the mounting flange Apply Loctite Primer Grade T to the stud Threads After the threads have dried assem...

Page 19: ...ed on the same stud over the clamp tubes Improper assembly will result in cocking of the reaction plate and uneven brake release Refer to section 4 2 and 6 1 for wear spacer quantity 4 3 13 Lubricate...

Page 20: ...ake components 4 5 1 4 Loosen the screws 20 gradually ONE TURN AT A TIME following a crosswise pattern until the remaining spring force is relieved Remove the screws and washers 17 4 5 1 5 Carefully l...

Page 21: ...prevent shaft rotation prior to releasing removing or performing maintenance on the DBBS brake assembly 4 5 2 1 Disconnect the air supply lines from the brake 4 5 2 2 Remove the fasteners that secure...

Page 22: ...onents 4 5 2 14 Position the spacer tubes 2 7 in line with the bolt holes of the cylinder and install the hex head screws 20 and lock washers 17 Tighten the screws in a crosswise pattern ONE TURN AT A...

Page 23: ...58 Disc 513328 1 513328 2 513328 3 513326 4 105 Brass Pipe Plug 0000 77 x 0021 1 0000 77 x 0021 1 0000 77 x 0021 1 0000 77 x 0021 1 DBBS Brakes 125DBBS 225DBBS 325DBBS 425DBBS Item Description 146320A...

Page 24: ...513395 1 513395 2 513395 3 513395 4 105 Brass Pipe Plug 0000 77 x 0021 1 0000 77 x 0021 1 0000 77 x 0021 1 0000 77 x 0021 1 150DBBS 250DBBS 350DBBS 450DBBS Item Description 146524A 146525A 146526A 146...

Page 25: ...000153x1016 4 000294x0405 144 308155 04 48 513326 8 000110x0030 12 204066 1 125 107748B 000153x1016 1 000294x0405 48 N A 0 51330 7 2 000110x00 73 12 204066 1 225 107748BA 000153x1016 2 000294x0405 96...

Page 26: ......

Page 27: ...Solutions US Company 2800 East 13th Street Ames IA 50010 USA Phone 1 515 239 6000 Danfoss Power Solutions Trading Shanghai Co Ltd Building 22 No 1000 Jin Hai Rd Jin Qiao Pudong New District Shanghai C...

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