GB/T 26547-2011 Rotary tools for threaded fasteners—Performance test method

Scope

This standard specifies a laboratory performance test method for power assembly tools used to install threaded fasteners, and provides test procedures and evaluation criteria, as well as detailed rules for presenting test data.
This standard applies to power tools that generate continuous torque.
This standard does not apply to impact pneumatic wrenches, ratchet pneumatic wrenches, pneumatic wrenches with ratchet clutches, or other power tools used to intermittently tighten fasteners, each time increasing the tightening force to overcome static friction, as the torque of these power tools cannot be measured using ordinary instruments.
This test method cannot be used as a factory inspection method.

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