Special Worm Grearbox Special Worm GrearboxOur Special Worm gearboxes are a customizable series tailor-made to your specific needs, supporting a wide range of applications. Download BrochureApplication-based Special Worm GearboxAltra Worm Specifications: Power range: 0.1 to 7.5kWReduction ratio range: 7.5 to 100Sizes: ALM25 to ALM130 Features: Aluminum alloy composes the housing, flanges, and feet up to size 90, and cast iron is used for sizes 110 and above.Steel is used for the worm shaft and the case is hardened to 58-60 HRC and profile ground.The worm wheel is composed of a cast iron hub upon which a casting of PB2 bronze rim is fitted.Synthetic oil grade: ISO VG 320 Premium Transmission2024-07-10T13:04:54+00:00