en.Wedoany.com Reported - KHK USA Inc. (the factory-direct distributor of KHK metric gears) announces the launch of dual lead worm gears for adjusting backlash in worm gear assemblies. This design achieves backlash adjustment through axial movement of the worm shaft rather than by modifying the gearbox housing, reducing installation time and maintenance effort.

The dual lead worm gear features a dual lead tooth profile. The difference between the left and right tooth flanks causes the tooth thickness to vary along the worm, thereby adjusting backlash when the worm moves axially. Moving the worm in the indicated direction brings thicker teeth into engagement, reducing backlash. A shaft displacement of 1 mm typically reduces backlash by 0.02 mm.

The dual lead worm gear is designed for integration into a screw-and-shim-based assembly layout. Arrows and reference grooves are marked on both the worm and worm wheel to aid installation and backlash adjustment. When aligned with the reference marks and set to the specified center distance, the gears can achieve near-zero backlash within a tolerance of ±0.045 mm.

KHK provides assembly instructions and technical documentation for this product. The company recommends following the specified assembly guidelines to ensure proper operation and service life.

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