Sterling Mechanical Variable Speed Drives

HP: .5 - 50 SPEED VARIATION: Up to 10:1 POWER SUPPLY: 3 Phase, 60 Hz, standard 230/460 or 575 VAC. Wide variety of special voltages and frequencies available. ENCLOSURES: ODP, TEFC, Explosion Proof and Sterli-Seal® (Washdown Duty). NEMA DESIGNS: B, C, D and special designs for specific applications. STANDARD VARIATIONS: Available with T or U-frame motors. Variety of assembly positions. With or without reducers (helical and right angle). Can be supplied with modular, C-face input and output to accept any type of motor or reducer. OUTSTANDING FEATURES: Lube-Free® (no grease) design of pulleys and shafts. Positive speed control over stepless range. Heavy duty belt with large thermal capacity to ensure long, cool-running operation. Full length cover plates on both sides of transmission provide easy access to internal parts. Various means available for changing speed (manual, electric or pneumatic). Tachometer speed read-out. Modular design provides the ultimate in flexibility and ease of service. Automatic belt tensioning ensures the smooth transmission of power and prevents excess belt wear. Can provide extra high starting torque. REFERENCE: Catalog 705