Nexen RB45B 968192 - Manual (Page 7)

7 FORM NO. L-21326-C-0513
ALIGNMENT VERIFICATION
1. With the shims still in place, mounting bolts
tightened, and brake disengaged, run the brake the
full length of machine travel. If an alignment issue
exists, the brake will drag at those spots where there
is misalignment.
2. If an alignment issue is found re-adjust the rail per
the manufacture’s recommendations.
3. Remove shims.
4. Again by hand, run the brake the full length travel
of the machine. NO drag should be felt between
the facing and rail. If drag is experienced, repeat
alignment steps.
Bearing*
Rail*
Table*
Socket Head
Cap Screws*
Rail
Brake
Datum
Plane
Base*
Mounting
Shoulder
*Customer Supplied Figure 7
Friction facing Gap adjustment should not be necessary
as the gap is factory set to accommodate standard rail
sizes and types. Before attempting to adjust the facing
gap. Ensure the mounting and alignment processes are
complete.
1. Disengage Brake.
2. Cut the label between the housing and the guide
using a straight edge. Leave the label in place so it
can act as a reference to the original position.
3. Adjust the position of the facing by turning the
guides on each side of the counter clockwise.
Notes regarding adjustment:
a. Make sure each side is turned an equal amount.
Failure to do this could cause misalignment.
b. 1/8 of a turn is equivalent to approximately
.127mm(.005in). There should be no need to
adjust more than this amount.
4. Repeat mounting and alignment verification steps.
FRICTION FACING GAP ADJUSTMENT
Figure 9
Figure 8
Nexen Label
Rail Brake
Guide
WARNING
To achieve rated holding force the
rail brake must maintain a close
fit between the facing and the rail
(Under .127mm [.005in]). Adjusting
the brake to have a gap wider
than this will cause performance
reductions.