Double enveloping gear

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Double enveloping worm gear set mounted with axes at a 90 degree angle. This type of gearing is also called Globoidal worm gearing, but the term double enveloping is more commonly used worldwide recently. Large Loading Capacity - There are more teeth in continuous meshing - There are two instantaneous lines of contact, so the length of contact line is longer - Under the same specification, compact dimension can be designed under the same transmitted power and the same transmission ratio High Transmission Efficiency - Easily establishing lubrication oil film - Smaller friction coefficient - Smoother functioning - Lower noisiness - Longer service life - Saving energy Grindablity - Worm tooth can be ground - Tooth surface hardness is higher ( HRC≥55 ) - Tooth surface roughness is lower ( Ra≤0.8 ) - Tooth accuracy grade is higher APPLICATION - Robot joints - UGV - Power wheelchairs - Elderly scooters - Scooters for disabled people - Electric windows and doors - Medical instruments - Booster pump used on cars - Car pedals - Wind turbine tower hoists - Power tools for food machinery industry - Radar antennas - Screw-down mechabism In 1971, China successfully developed the planar double enveloping worm gear product. In 1981, China successfully manufactured a planar double enveloping worm gearing for screwdown gear of heavy mill, with a center distance of 1,200mm.