The S991LYM20A is a heavy-duty 'L' gear drive with a 1:1 ratio and a 20 mm shaft diameter, designed for low noise and high efficiency. It features spiral bevel gears made of case-hardened alloy steel in an aluminum die-cast case, with alloy steel shafts. The unit measures 80 mm in width, 120 mm in height, and 168 mm in length, and operates within a temperature range of -10°C to +40°C. It has a backlash range of 8' to 33' and weighs 3.1 kg. The drive is maintenance-free, reversible, and compatible with a 6 x 6 x 35 mm keyway. The maximum rated speed is 3600 RPM.
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 | S991LYM20A |
| Product Name | Low Noise & High Efficiency Heavy-Duty 'L' Gear Drive, with a 1 Gear Ratio and a 20mm Shaft Dia. |
| Gear Ratio | 1 (X : 1) |
