Setting Torque For Bolt Tightening (Non-Calibrated); Setting Torque For Bolt Tightening (Calibrated) - norbar HANDTORQUE HT 1 Bedienungsanleitung

Setting Torque for Bolt Tightening (Non-Calibrated)

1. Establish the correct torque figure for the bolt from manufacturer's instructions or by calculation. A
torque tension calculator is available on the Norbar website (www.norbar.com), which can be used as a
guide to help calculate the tension generated in a bolt for a given thread size, torque and friction value.
NOTE: Many factors have an effect on the torque/induced load relationship and care should be
taken to consider factors such as surface finish and amount/type of lubrication. In critical
applications, the relationship between torque and induced load should be determined by
experimentation with the actual components and lubrication used.
2. Divide the required torque by the 'Multiplication factor' of the multiplier (See Specifications section, page
13). This gives the input torque.
Example: A HandTorque
there is an output torque of 5.2 N∙m, with a +/- 4% tolerance.
To reach the HandTorque
calculation is made:
3. Select a suitable torque wrench for the input torque. The wrench should be of high quality and regularly
calibrated.

Setting Torque for Bolt Tightening (Calibrated)

This section only applies to HandTorque's that are supplied with a Certificate of Calibration (see Figure 7).
The following part numbers come with a Certificate of Calibration; 180200, 180201, 180202, 180203,
180204, 180205, 180206, 180208, 180209, 180210, 180212, 180214, 180215, 180216, 18196, 18198 and
18199.
1. Establish the correct torque figure for the bolt from manufacturer's instructions or by calculation. A
torque tension calculator is available on the Norbar website (www.norbar.com), which can be used as a
guide to help calculate the tension generated in a bolt for a given thread size, torque and friction value.
NOTE: Many factors have an effect on the torque/induced load relationship and care should be
taken to consider factors such as surface finish and amount/type of lubrication. In critical
applications, the relationship between torque and induced load should be determined by
experimentation with the actual components and lubrication used.
8
®
HT 1 has a 'Multiplication ratio of 5.2:1, so for an input torque of 1 N∙m
® HT 1 maximum output torque of 1,700 N∙m the below
1,700 (Required Torque)
5.2 (Multiplication Factor)
= 327 N∙m (Input Torque)