Sumitomo Bevel Buddybox 4 - Torque Arm and Removal; Torque Arm Installation and Unit Removal Steps

18 Manual BBB4_ENG_01_2016_991301
Torque Arm Introduction
A torque arm is a device used to prevent counter-rotation of the shaft mounted
reducer/gearmotor during operation.
The torque arm must be mounted in tension when torque arm
mounting point is greater than 6 inches (150mm) from machine mount-
ingpointor,tie-rodorturnbuckletypetorquearmisused.
Torque Arm Installation
Torque Arm Introduction, Turnbuckle Type Torque Arm
1
Attachthetorquearmthreadedextensionrodtothebevelhousing,asshown
intheFigure,atthehousingcornereyelet,usingtheappropriatenut,boltand
lockwasher.
•Inserttheboltthroughthe
brackets,torquearmsleeve(if
supplied) and reducer housing
eyelet.
•Placethelockwasheronthebolt
and secure with nut.
2
Install the turnbuckle onto the threaded extension rod (gearbox side) and then
threaded arm (foundation side) to the turnbuckle
Iftheassemblywassuppliedwithhexnutstosecuretheturnbuckle,installthe
nutsloosely,ensuringthelefthandnutisusedonthethreadedarm,priorto
installing the turnbuckle and threaded arm
Unit
Size
Bolt Size
[1]
N•m
A M16 x 75 206 – 227
B M20 x 100 392 – 431
C M24 x 105 686 – 755
D M24 x 125 686 – 755
E M24 x 125 686 – 755
F Consult Factory
Table6.BoltTighteningTorques
Note: [1] Bolt Class equal to ISO/JIS Class 8.8
Turnbuckle Type Torque Arm Parts
Item Number Description Item Number Description
1 Hex Nut 7 Locke Washer
2 Lock Washer 8 Fulcrum Mounting Bracket
3 Threaded Extension Rod 9 Hex Bolt
4 Turnbuckle 10 Locking Nut (if supplied)
5 Threaded Arm 11 Locking Nut (if supplied
6 Hex Bolt 12 Hex Bolt
Table 5. Turnbuckle Type Torque Arm Parts
Insert Bolt
TightenNut
1 2 3 4 5 6 7
12 91011 8
Turnbuckle Rod Type Torque Arm Parts