Banjo Type Torque Arm - Sumitomo Cyclo BBB5 Quick Start Manual

4
Confirm that the rubber bushings can still be rotated by hand. This
indicates the bushing has not been over-tightened.
Bushings are
Compressed bushings will not allow the bushings to properly absorb
free to rotate by
hand
the loads of the shaft mounted gearbox. This can lead to premature
failure.
5
Confirm the mounting angle bracket does not interfere with the
torque arm. There should be no metal-to-metal contact between
the two during a complete revolution of the driven equipment.
20
Quick Start Guide
Mounting angle bracket must be secured to the machine
structure.
Metal-to-Metal contact between these two components
may lead to catastrophic failure of the reducer/gearmotor.
Top View

Banjo Type Torque Arm

1
Bracket
Torque Arm
Mounting
Attach the Flange Mount (Banjo) Torque Arm Bracket to the reducer
Bracket
Bolts(s)
using mounting hardware.
Table 11. Bolt Tightening Torque
2
T/A Bolt
(Customer
Supplied) Place washer and rubber bushing on bolt. Insert torque arm bolt
(supplied by customer) through mounting tab on Flange Mount
Rubber
(Banjo) type torque arm.
Bushing
Washer
When installed,
bolt must be
parallel to this
surface
3
Mounting Angle
Follow these steps to attach the torque arm to mounting structure or
Bracket (Customer Supplied)
mounting angle bracket (customer supplied):
Washer
Rubber Bushings
Nuts
(Customer Supplied)
www.SumitomoDrive.com
Torque
[1]
Bolt Size
ft-lb (Nm)
M16 155 - 165 210 - 225
Note: [1] Bolt ISO/JIS Class 8.8
M20 290 - 320 395 - 430
M24 510 - 555
690 - 755
M30 1020 - 1110 1380 - 1510
Make sure bolt is parallel to Flange Mount (Banjo) Type
torque arm surface when fully installed.
• Verify that the mounting structure or mounting angle
bracket hole is the correct diameter.
• Place rubber bushing and mounting angle bracket on
bolt.
• Ensure the bolt passes through mounting structure or
mounting angle bracket hole.
• Place remaining bushing, washer and two nuts on the
bolt.
Do not over-tighten nuts. Tighten to point where
rubber bushings can still be hand rotated.
Quick Start Guide
21