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FORM NO. L-20117-G-0914

GENERAL SPECIFICATIONS

GENERAL SAFETY PRECAUTIONS

CAUTION

Use  lifting  aids  and  proper  lifting 
techniques  when  installing,  removing, 
or placing this product in service. 

CAUTION

Watch  for  sharp  features  when 
interacting with this product.  The parts 
have  complex  shapes  and  machined 
edges.  

WARNING

This  product  is  capable  of  emitting 
a spark if misused, therefore it is not 
recommended for use in any explosive 
environment.  

Specifications

Torque

DFB: Up to 9310 Nm (82400 in-lbs) 
QFB: Up to 18620 Nm (164800 in-lbs)

Actuation Pressure

1 - 5.5 bar (14.5 - 80 psi)

Service Temperature

4.5 - 104 C (40 - 220 F)

Approximate Weight

Up to 385 kg (850 lbs)

CAUTION

Use  appropriate  guarding  for  moving 
components.    Failure  to  guard  could 
result in serious bodily injury. 

WARNING

Ensure  proper  guarding  of  the  product  is 
used.  Nexen recommends the machine builder 
design guarding in compliance with OSHA 29 
CFR  1910  “Occupational  Safety  and  Health 
Hazards”.  

CAUTION

This  product  has  possible  pinch 
points.  Care should be taken when 
interacting with this product. 

CAUTION

This  product  has  possible  pinch 
points.  Care should be taken when 
interacting with this product. 

CAUTION

The  temperature  limits  for  the 
product  are  4.5-104  degree 
Celsius (40-220 degree F).  

Summary of Contents for Air Champ DFB-1150

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Page 9: ...FORM NO L 20117 G 0914 1 Dual and Quad Faced Brakes DFB and QFB Models 1150 1650 2200 and 2500...

Page 10: ...ce until the machinery into which it is to be incorporated has been declared in conformity with the applicable provisions of the Directive Read this manual carefully before installation and operation...

Page 11: ...neral Specifications 4 General Safety Precautions 4 Installation 5 Lubrication 7 Air Connections 7 Operation 8 Troubleshooting 9 Friction Facing Wear Adjustment 9 Parts Replacement 10 Replacement Part...

Page 12: ...0 in lbs Actuation Pressure 1 5 5 bar 14 5 80 psi Service Temperature 4 5 104 C 40 220 F Approximate Weight Up to 385 kg 850 lbs CAUTION Use appropriate guarding for moving components Failure to guard...

Page 13: ...embly FIGURE 2 QFB Cylinder Piston Pressure Plate Assembly Friction Plate Assembly Hub Housing Facing Assembly Disc Assembly Cylinder Piston Pressure Plate Assembly Shims FIGURE 1 DFB 1 Provide a pilo...

Page 14: ...quired to achieve the 1 456 dimension See Figures 5 and 6 for proper Shim placement 11 Apply a drop of Loctite 242 to the threads of the Socket Head Cap Screws Item 12 See Figure 6 12 Install Lock Was...

Page 15: ...are not using a Nexen lubricator calibration must follow the manufacturer s suggested procedure 4 Close the air line to the unit when a drop of oil forms in the Lubricator Sight Gage 5 Connect the air...

Page 16: ...both ports is mandatory to ensure proper actuation of the brake See Figure 7 WARNING Never exceed maximum operating speeds listed for your product See Table 4 OPERATION TABLE 4 Size Max RPM DFB QFB 11...

Page 17: ...t c i r F e c a l p e R y l n o B F Q t n e m t s u j d a r a e w g n i c a F n o i t c i r F t c e r r o c n I t n e m t s u j d a r a e w g n i c a F n o i t c i r F m r o f r e P FRICTION FACING WE...

Page 18: ...ing to remove the Flat Head Screws 5 Remove Flat Head Screws Item 11 securing Friction Facings Item 3 6 Install the new Flat Head Screws Item 11 and new Friction Facing Item 3 into Housing Item 2 Tigh...

Page 19: ...ded torque See Table 6 21 Apply a drop of Loctite 242 to the threads of the Socket Head Cap Screws Item 12 NOTE Be certain Shims are reinstalled in the proper sequence Install new Shims only when perf...

Page 20: ...NO L 20117 G 0914 REPLACEMENT PARTS continued FIGURE 12 QFB EXPLODED VIEW 11 8 10 7 9 18 17 16 15 12 2 3 1 4 3 19 4 3 19 6 13 14 5 2 3 1 4 19 7 6 14 13 3 11 8 10 9 18 17 16 15 12 5 FIGURE 11 DFB EXPLO...

Page 21: ...1 8 8 0 1 0 1 5 1 5 1 0 1 r e h s a W k c o L 6 6 6 6 0 1 2 2 0 1 0 1 1 1 w e r c S d a e H t a l F 4 2 8 4 4 2 8 4 4 2 8 4 4 2 8 4 2 1 w e r c S p a C d a e H t e k c o S 6 6 2 1 2 1 2 1 2 1 2 1 2 1...

Page 22: ...TURE WHATSOEVER WHETHER ARISING OUT OF BREACH OF WARRANTY OR OTHER BREACH OF CONTRACT NEGLIGENCE OR OTHER TORT OR OTHERWISE EVEN IF NEXEN SHALL HAVE BEEN ADVISED OF THE POSSIBILITY OR LIKELIHOOD OF SU...

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