The S991LYM15A is a heavy-duty 'L' gear drive with a 1:1 ratio, designed for low noise and high efficiency in applications requiring reversible operation and maintenance-free performance. It features spiral bevel gears made of case-hardened alloy steel and an aluminum die-cast case, with a 15 mm input shaft diameter and a keyway of 5 × 5 × 27 mm. Operating temperature ranges from -10°C to +40°C. The unit measures 66 mm in length, 100 mm in width, and 31 mm in height, and weighs 1.8 kg. Backlash is specified between 10' and 37'.
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 | S991LYM15A |
| Product Name | Low Noise & High Efficiency Heavy-Duty 'L' Gear Drive, with a 1 Gear Ratio and a 15mm Shaft Dia. |
| Gear Ratio | 1 (X : 1) |
