The S9118A-T6028 is a double-ended, inline miniature spur gearhead speed reducer with a 1.75-inch outer diameter, designed for Bu-Ord size 18 servomotors. It features a mounting footprint identical to Bu-Ord OP 1755 motors and uses ball bearings throughout. The model has a rated output torque of 54 ozf-in and a maximum starting torque of 0.02 ozf-in. The unit is available in a 55.05:1 reduction ratio variant, with output rotation direction indicated by 'S' for same as input or 'R' for reversed. Zero-backlash, low-backlash, and exact-ratio configurations are available on special order.
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 | S9118A-T6028-10 |
| Product Name | 55.05 TO 1, MGX T-Series Inline Miniature Spur Gearhead, Double-Ended 1.75" O.D.(Bu-Ord size 18) Speed Reducer |
| Gear Ratio | 55.05 (X : 1) |
