Right-angle helical gear drives with 1.5:1 ratio, sealed gear cases, and built-in keyways are designed for input speeds up to 1200 rpm and maximum operating temperatures of +200°F. The S991HY-B6275RH variant features a 5/8-inch hollow input bore and a 3/4-inch hollow output bore, with right-hand rotation. The case is made of hard-anodized aluminum alloy, shafts are 1144 steel, and gears are 4140 heat-treated steel. The unit is mounted using 1/4-20 screws and includes keys. Theoretical output torque at 100 rpm input is 170 lbf·in. Input and output shafts are supported by heavy-duty sealed ball bearings.
Speed reducers are components that use a gear train to reduce output rpms. MGX gearheads and speed reducers are made to the highest exacting standards of craftsmanship. Our MGX gearheads are attachable to the U.S. Bureau of Ordnance (Bu-Ord for short) frame-size servomotors without modifications to the input pinions and without complicated adapters, screw threads, etc., thanks to the versatile mounting clamps supplied. Mounting dimensions are identical to Bu-Ord OP 1755 motor dimensions.
Our speed reducers are offered in low and zero backlash options, with single- and double-ended shafts. They are available in Bu-Ord sizes 11, 15, and 18 and with an O.D. of 1-1/16”, 1-7/16”, and 1-3/4”.
Consult engineering for the gearheads and speed reducers:
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| Stock Drive Products & Sterling Instrument - SDP/SI | |
|---|---|
| Product Category | Gearboxes and Gearheads |
| Product Number | S991HY-B6275RH |
| Product Name | 3:2 Ratio, RH Drive, Right Angle Helical Gear Drive |
| Gearing | Helical |
