Model Number: 50:1 Brand Name: DMC Key Specifications/Special Features: Bigger input and case hardened to ensure long trouble-free lifeStainless steel expansion section ensure non-corrosion and allow oil expand operationHigh strength cast iron bull gear provide the highest load capacity and longest life for extreme conditions50:1 speed reduction (turbine: worm)Double input oil seal

Heaviest gearbox housing is designed more material in high stress area to distribute loads more evenly

High stressed steel worm and output roller with protection sleeve

Input roller is sealed with anti-dust and anti-UV ring

UV-anti rubber ring on input bearing effectively avoid dust in

Expansion film of bellow model provide robber diaphragm, allow oil to expand and contract during operation