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FORM NO. L-21272-C-0215

LUBRICATOR DRIP RATE SETTINGS

1.  Close and disconnect the air line from the unit.

2.  Turn the Lubricator Adjustment Knob counterclockwise 

three complete turns.

3.  Open the air line.

4.  Close the air line to the unit when a drop of oil forms 

in the Lubricator Sight Gage.

Each FMBS is provided with a Housing Guard.  Install 
the Housing Guard so one of the ribs of the FMBS input  
housing is directly beneath the clamp on the Housing Guard.  
Tighten screws to 35 in-lbs [4 Nm]. 

Waterproof guards are also available.  Purchase waterproof 
guards from your local Nexen Distributor.  See Accessories 
Section for part number of guard.

HOUSING GUARD INSTALLATION

FIGURE 3 

HOUSING GUARD

WARNING

Always have the Housing Guard in 

place when operating the FMBS (See 

Figure 3).  

NOTE

Nexen pneumatically actuated devices require clean, pressure regulated air for maximum performance 

and life.  All seals in Nexen Pneumatically operated devices are lubricated for life and do not require 

additional lubrication.  
However, some customers prefer to use an air line lubricator, which injects oil into the pressurized air, 

forcing an oil mist into the air chamber.  This is acceptable, but care must be taken to ensure once an air 

mist lubrication system is used, it is continually used over the life of the product as the oil mist may wash 

free the factory installed lubrication. 
Locate the lubricator above and within ten feet of the product, and use low viscosity oil such as SAE-10. 
Synthetic lubricants are not recommended. 
Nexen product's bearings are shielded and pre-lubricated, and require no further lubrication.  

5.  Connect the air line to the unit.

6.  Turn the Lubricator Adjustment Knob clockwise until 

closed.

7.  Turn the Lubricator Adjustment Knob counterclockwise 

one-third turn.

8.  Open the air line to the unit.

LUBRICATION

CAUTION

These settings are for Nexen supplied 

lubricators.  If you are not using a Nexen 

lubricator, calibration must follow the 

manufacturer's suggested procedure.  

Summary of Contents for AIR CHAMP FMBS-1125

Page 1: ...1 FORM NO L 21272 C 0215 Flange Mounted Spring Engaged Brake Models FMBS 1125 FMBS 1375 and FMBS 1625...

Page 2: ...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 3: ...Precautions 4 Installation 5 Housing Guard Installation 6 Lubrication 6 Air Connections 7 Operation 7 Troubleshooting 8 Parts Replacement Friction Facings 9 Bearing Compression Springs and O Ring Seal...

Page 4: ...appropriate guarding for moving components Failure to guard could result in serious bodily injury WARNING This product is capable of emitting a spark if misused therefore is not recommended for use i...

Page 5: ...ing Item 6 using Hex Head Cap Screws and Lock Washers Items 26 27 5 Tighten Hex Head Cap Screws Item 26 to 200 in lbs 22 6 Nm CAUTION Do not lubricate either the brake bore or the motor shaft Any lubr...

Page 6: ...eals in Nexen Pneumatically operated devices are lubricated for life and do not require additional lubrication However some customers prefer to use an air line lubricator which injects oil into the pr...

Page 7: ...ble The following is a common air supply scheme used with this product This is an example and not an all inclusive list All air circuits to be used with this product must be designed following ISO 441...

Page 8: ...r o w o L d n a n o i t c n u f l a m e v l a v l o r t n o c r o f k c e h C y r a s s e c e n f i t i e c a l p e r d n a s e n i l r i a e h t n i s k a e l r i a r o f k c e h C e h t e c a l p e...

Page 9: ...Facings Item 18 using the new Facing Screws with locking patch Item 19 7 Tighten the new Facing Screws to 60 in lbs 6 7 Nm BEARING COMPRESSION SPRINGS AND 0 RING SEALS Item 1 Item 5 Item 3 Item 4 Ite...

Page 10: ...g Ring Item 14 22 Equally space the Compression Springs Item 22 in the spring pockets of Piston Item 3 Compression Spring quantity shown in Table 4 23 Slide the Piston Item 3 onto the Dowel Pins Item...

Page 11: ...kit items See Table 4 for quantity TABLE 4 Model Product No Qty FMBS 1125 N A N A FMBS 1375 801980 6 FMBS 1625 801990 10 Item 1 Item 5 Item 3 Item 4 Item 18 Item 19 Item 2 Item 12 Item 11 Item 10 FIG...

Page 12: ...FMBS Housing Guards Type Models Product Number Ring Guard 1125 1375 1625 935900 Waterproof Guard not shown 1125 1375 1625 935901 FACING AND REPAIR KITS Model Facing Kit Repair Kit FMBS 1125 N A N A FM...

Page 13: ...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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