What impact does the state of the worm gear shaft assembly have on the performance of the WPDO120-10-B-3KW worm reducer?

The worm gear shaft assembly is the core transmission component of the WPDO120-10-B-3KW worm gear reducer. Its assembly accuracy, wear status, and positioning reliability directly determine the transmission efficiency, operational stability, noise level, and service life of the reducer. The specific impacts are as follows:

1. The impact on transmission efficiency

If the clearance between the worm gear shaft and the worm gear is too large (exceeding the H7/k6 transition fit standard), the worm gear will move or swing radially on the shaft during operation, resulting in a decrease in the contact area between the worm gear and the worm gear, an increase in friction loss at the meshing point, and a decrease in transmission efficiency of 5% to 15%; If the fit is too tight, it will increase the frictional resistance between the shaft and the inner hole of the worm gear, and also reduce efficiency.

If the lubrication of the worm gear shaft bearing is poor, the wear is severe, or the pre tension is improper, it will increase the rotational resistance, further reduce the transmission efficiency of the whole machine, and in severe cases, there may be a "stuck" phenomenon.

2. The impact on operational stability and noise

2.1 If the radial runout of the worm gear shaft exceeds the standard (>0.03mm), it will cause periodic changes in the meshing clearance between the worm gear and the worm wheel, resulting in periodic impact noise during operation. At the same time, accompanied by intensified shell vibration, the vibration speed can exceed the qualified threshold of 2.8mm/s.

2.2 Excessive axial movement of the worm gear shaft (>0.08mm) can damage the correct meshing position between the worm gear and the worm wheel, causing local contact on the tooth surface, producing sharp whistling sounds, and significant fluctuations in vibration values, affecting the stability of the entire machine operation.

2.3 If the clearance between the flat key and the keyway is too large or the key is deformed, it will cause the circumferential positioning of the worm gear and shaft to fail, resulting in a "key groove" impact sound during operation, accompanied by fluctuations in transmission torque.

3. The impact on the lifespan and load-bearing capacity of tooth surfaces

3.1 Positioning deviation of the worm gear shaft (such as excessive coaxiality of the bearing seat hole) can cause the meshing between the worm gear and the worm wheel to deviate from the optimal contact area, resulting in local stress concentration on the tooth surface, uneven wear, pitting, bonding and other faults, greatly shortening the service life of the worm gear.

3.2 Bending deformation or bearing damage of the worm gear shaft can cause uneven meshing clearance, and there is a risk of tooth root fracture under heavy load conditions, resulting in the actual load-bearing capacity of the reducer being lower than the design value (3KW suitable load).

4. The impact on sealing and oil leakage

4.1 If the wear of the worm gear shaft neck exceeds the standard (roundness error>0.02mm), it will damage the sealing between the oil seal lip and the shaft neck, resulting in oil leakage and seepage at the oil seal.