Setting Torque For Bolt Loosening; Operating The Multiplier - norbar HANDTORQUE HT 1 Bedienungsanleitung

Example: The HandTorque
24.21:1, meaning that for every 1 N∙m of input, 24.21 N∙m are output, with a +/- 4% tolerance.
To reach the HandTorque
is made:
3. Select a suitable torque wrench for the input torque. The wrench should be of high quality and regularly
calibrated.
The HT 52, 72 and 92 Compact Series models can also come as part of a kit which includes a Norbar TTi
Torque Wrench and Carry Case. The table below details the range of HandTorque
Kit Part
Number
18186
18192
18195
The HandTorque Kit has a combined accuracy of +/- 6.5%. This is taken from a combination of the +/- 3%
®
TTi Torque Wrench tolerance and the working variation of the HandTorque
NOTE: The accuracy of +/- 6.5% is only valid provided the multiplication ratio on the Calibration
Certificate is used and reaction is taken within the parameters demonstrated in Figure 6.

Setting Torque for Bolt Loosening

1. To ensure that the multiplier is not overloaded, it is desirable to use a torque wrench even for bolt
loosening.
2. Divide the multiplier maximum output by the 'Multiplication factor'. This gives the maximum input torque.
3. Select a suitable torque wrench for the input torque.
NOTE: Some torque wrenches will not be active ('click' or 'break') when used in the anti-clockwise
direction.

Operating the Multiplier

1. Fit the multiplier with the correct size of power drive or impact quality socket to suit the bolt to be tightened.
2. Fit the multiplier to the bolt with the reaction plate adjacent to the reaction point. See Figure 2.
3. Fit the torque wrench to the multiplier, set as in 'Setting Torque for Bolt Tightening'.
4. Operate the torque wrench in the normal manner until it 'clicks' or 'breaks'. Smooth and even use of the
torque wrench will give more accurate results.
TIP: For extra accuracy a torque transducer can be used to measure the input or output torque.
HT-92 Certificate of Calibration in Figure 7 displays a multiplication ratio of
®
® HT-92 maximum output torque of 4,000 N∙m, the below calculation
4,000 (Required Torque)
24.21 (Multiplication Factor)
HandTorque ®
HT-52 (18196)
HT-72 (18198)
HT-92 (18199)
= 165 N∙m (Input Torque)
Kit Contents
Multiplier
TTi 60 Dual Scale (13680)
TTi 100 Dual Scale (13441)
TTi 200 Dual Scale (13443)
Kits available:
®
Torque Wrench
gearbox.
®
9