Torque arm /T

WARNING

Insufficiently secured gear units can fall down during disassembly and assembly to the customer machine.
Severe or fatal injuries.
  • Secure the gear unit during assembly and disassembly. Support the gear unit using appropriate tools.

 

NOTICE

Danger due to overhung loads acting on the torque arm.
Possible damage to the gear unit.
  • The torque arm can only transfer tensile/compressive forces in the direction of support. Overhung loads can damage the gear unit.

To keep the bending moments on the machine shaft as low as possible, always mount the torque arm [A] on the side of the driven machine. The torque arm can be mounted on the top or bottom of the gear unit.

  1. Lift the gear unit with a suitable lifting device.
  2. Mount the output shaft of the gear unit to the customer machine.
  3. Mount the torque arm on the gear unit.
  1. NOTICE! Make sure that the stud bolt [2] is simultaneously screwed into the yoke head [1] and joint head [3]. Possible damage to property. The stud bolt [2] must be screwed evenly into the yoke head [1] and joint head [3] by at least once the length of the thread diameter.

    2. [1]

    Yoke head with bolt

    [3]

    Joint head

    [2]

    Stud bolt with nuts

    [4]

    Yoke plate with bolt

  1. Use the lifting device to position the gear unit horizontally above the customer's mounting position.
  2. Adjust the length of the threaded bolt by turning the yoke plate in such a way that the base plate rests on the ground without play. Also observe the tolerances in chapter Permitted deviation of the mounting position during installation.

    3. [1]

    Yoke head with bolt

    [2]

    Stud bolt with nuts

    [3]

    Joint head

  3. Use this position of the yoke plate to define the fastening points.
  1. After the alignment process, tighten the nuts with the tightening torques listed in the following table.

Size

Screw/nut

Tightening torque

Nm

X100 – 110

M20

140

X120 – 130

M24

140

X140 – 150

M24

140

X160 – 190

M36

200

X200 – 230

M42

350

X240 – 280

M48

500

X290 – 320

M56

700

  1. The yoke plate can be mounted on the customer's mounting surface using suitable mounting material.
  2. To ensure that only tensile and compressive forces are transmitted, it is recommended to check this. For checking, you can detach the torque arm from the gear unit (remove bolt from [2]) and tilt it outwards and back inwards. The torque arm is adjusted correctly if the bolt [1] can be mounted without the yoke head [2] touching the gear unit.
  3. Fasten the yoke head [2] with the bolt [1].
  4. Remove the lifting device from the gear unit.