Nexen BSB07 965040 - Manual (Page 5)

5 FORM NO. L-21225-F-0813
INSTALLATION
INSTALLATION ONTO A BALL SCREW
NOTE: The Ball screw Brake coupling consists of a
clamping hub and an expanding shaft side connected
together with an elastomer insert. Refer to Figures 1,
2, 3, and 4.
The two coupling hubs are concentrically machined
to accept an elastomer insert for axial misalignment.
One hub has a bore to accept the machined end of
a ball screw and a clamping hub with a radial screw.
The other side has an expanding shaft and tapered
clamping element that expands into the brake bore
when a cap screw is tightened.
1. Separate the coupling into two halves. Mount the
expansion shaft. Push the coupling shaft into the
brake bore and tighten the cap screw to the torque
specification in Table 1.
Table 1
Model Clamp Collar Expanding Shaft
BSB 2 2 Nm [18 in-lbs] 2.3 Nm [20 in-lbs]
BSB 3 4 Nm [36 in-lbs] 9 Nm [80 in-lbs]
BSB 4 15 Nm [133 in-lbs] 22 Nm [200 in-lbs]
BSB 5 15 Nm [133 in-lbs] 32 Nm [283 in-lbs]
BSB 7 35 Nm [310 in-lbs] 60 Nm [530 in-lbs]
2. Mount the clamping hub. Slide this coupling half onto
the machined end of the ball screw.
3. At the correct axial position, tighten the mounting
screw to the torque specification in Table 1.
Figure 3
Model
Socket Head
Cap Screw
(Customer Supplied)
Recommended
Fastening Torque
BSB 2 M5 7 Nm [63 in-lbs]
BSB 3 M6 12 Nm [107 in-lbs]
BSB 4 M8 29 Nm [260 in-lbs]
BSB 5 M10 58 Nm [520 in-lbs]
BSB 7 M12 158 Nm [1,400 in-lbs]
Ball Screw Brake
Customer Supplied
Fasteners
Base Plate
Tapped Holes
Ball Screw
Figure 4
Ball Screw
Figure 1
Brake
Shaft
Ball
Screw
Figure 2
4. Use customer-supplied screws, washer and nuts to
bolt the flanges together.
5. Apply Loctite ® 242 to the threads of the screws.
6. Torque the screws to the recommended values.
Refer to Table 2.
Table 2
CAUTION
The elastomer insert must be able to
move axially in order to compensate for
axial misalignment.