LIEBHERR certification of the battery torque wrenches MAD (MB-RAD)
The global crane manufacturer LIEBHERR has approved the battery-operated torque wrenches of the MAD (MB-RAD) series for crane assemblies. This opens up new technical possibilities for the assembly companies to quickly and safely produce the HSFG bolted connections on the tower.
After extensive machine capability analysis and EMC tests of the torque wrenches in the torque range of 140-7,000 Nm, the LIEBHERR standard “Technical Information” now also includes the battery torque wrenches MAD (MB-RAD). The use of non-approved torque wrenches for tower assembly is not permitted.
The MAD (MB-RAD) has a repeatability of ±2,8 % and can be used reliably at ambient temperatures down to -20°C without warming up. Thanks to the brushless electric motor, torque/angle controlled shut-off and limit value monitoring, the MAD (MB-RAD) works extremely precisely and is even up to 60 % faster than a hydraulic torque wrench.
The torque wrench can optionally be equipped with data logging or a torque check function for maintenance work.