A new series of hollow-shaft right angle helical gear drives from Sterling Instrument (ISO 9001+AS9100 Registered Manufacturer) feature built-in keyways plus left- or right-hand rotation. Identified as the S991HY-... Series and feature heavy-duty sealed ball bearings,1:1, 2:1 or 3:2 ratios plus rated speeds up to 1200 rpm. They are suited for most industry applications such as for use in printing, packaging and textile machinery. They are made with an aluminum alloy, hard-anodized case, 1144 steel, hollow bore shafts, and 4140 heat-treated steel gears. Their hollow-bore sizes range from 5/8" to 3/4" and their maximum operating temperature is 200°F.

Quotes, online orders, and 3D CAD Models are available at our updated eStore at: https://sdp-si.com/eStore/.

SDP/SI offers over 130,000 power transmission components including: gears, belt and chain drives, shafts, shaft accessories, bearings, couplings, universal joints, vibration mounts, miscellaneous components, hardware, gearheads and speed reducers, right angle drives, brakes and clutches, motors and gearmotors.

Detailed specifications are contained in Catalog D810, available free upon request from:

Sterling Instrument, 2101 Jericho Turnpike, P.O. Box 5416, New Hyde Park, NY 11042-5416.
Phone: 516-328-3300 • Fax: 516-326-8827