Torque Multipliers
A torque multiplier takes low input torque and turns it into high output torque. You can tighten or loosen large bolts with a standard torque wrench or breaker bar. Choose the gear ratio, for instance 1:4, and the maximum torque rating. The drive squares matter: often 1/2" input but also 3/4" or 1" output. Longer models give more reach but need more space. Always secure the reaction bar to counter the twist.
Torque Multiplier Repair Kit | for BGS 1204
Torque Multiplier Set | 25 mm (1") | 10 pcs.
Torque Multiplier
Empty Case for BGS 1230
Torque Multiplier Set | 12.5 mm (1/2") + 20 mm (3/4") | 6 pcs.
Torque Multiplier: More Torque Without Air Tools
Which version suits your work?
A torque multiplier increases the torque you deliver with a torque wrench or breaker bar. The ratio determines how much torque comes out. Choose 1:4 for regular work on trucks. Heavier versions go up to 1:25 or higher. Also check the maximum torque. It must be well above the required tightening torque. This way you can loosen wheel nuts on trucks or heavy-duty bolts without pneumatic tools.
Where does ordering go wrong?
The drive size is the biggest pitfall. Most torque wrenches have 1/2 inch. But torque multipliers for heavy work often have 3/4 or 1 inch. Always check the size of your existing sockets and wrenches. A wrong size means you cannot connect anything. A long handle gives more reach, but watch the space around the bolt. In a wheel arch there is often less room than you think.
Why the counterstay is essential
A torque multiplier only works properly with the right counterstay. It absorbs the reaction force. Without a counterstay, the housing rotates and no torque reaches the bolt. Always use the support arm or a fixed reaction system. This prevents damage to the tool and to yourself. A torque multiplier is not a replacement for a slide hammer, but it is a safe alternative for heavy loosening and tightening work.
A torque multiplier belongs in the wider range of torque tools. If you want to set the torque accurately, look at torque wrenches. With insert tools you swap the heads, and torsion bars protect your tool against overload. If your torque wrench loses its accuracy, a repair set for torque wrenches offers a solution.