1. Core Benchmark Determination Rules
Rotation matching principle: The backstop is divided into two types: clockwise (S) and counterclockwise (N), which must completely correspond to the actual normal working rotation direction of the high-speed shaft of the reducer. For example, when driving an upper belt conveyor, a counterclockwise (N) model must be selected. Misinstallation of a clockwise model will directly lead to the failure of the backstop function.
Steering arrow check: There is usually a clear steering mark arrow engraved on the surface of the backstop casing, which must be consistent with the normal working direction marked on the reducer nameplate. You can refer to the mantra "Working direction of rotation matches the arrow, don"t worry about reversal and self-locking".
Uniform standard of viewing angle: Use the viewing angle facing the output shaft end of the reducer as the benchmark to determine the direction of rotation to avoid misjudgment of direction caused by different viewing angles.
2. Practical verification method
Manual idling test: Before installation, turn the inner ring of the backstop by hand to confirm that its free rotation direction is consistent with the normal working direction of the reducer, and that the anti-reverse locking direction completely matches the reversal direction after the equipment is shut down.
Shaft rotation pre-confirmation: Turn on the power and jog the reducer to confirm the actual rotation direction of the high-speed axis, and then select a backstop that matches the rotation direction to avoid deviations in judgment based solely on drawing markings.
3. Key points for verification of the installation direction
Coaxiality Requirements: After installation, confirm that the coaxiality error between the backstop and the high-speed shaft is ≤0.1mm to prevent eccentricity from causing stuck operation or abnormal vibration.
Compliance with the force direction: During installation, only pressure can be applied to the inner ring of the backstop, and hammering on the outer ring is strictly prohibited to avoid misalignment of the internal wedge or roller structure, which may lead to directional function failure.
Working condition adaptation review: If the equipment requires forward and reverse operation, conventional one-way backstops cannot be used, otherwise jamming, locking and other faults may occur.
