Planetary gearbox, 160 mm frame, 20:1 reduction
The GBX1600200703F is a straight-tooth planetary gearbox in the 160 mm diameter frame, built for servo and general motion-control applications where compact inline power transmission is needed. Its 20:1 reduction ratio steps motor speed down by a factor of twenty while multiplying torque — the continuous output torque rating of 800 N.m at 100 rpm tells you what it can hold all day in a duty cycle. Maximum output torque hits 1280 N.m at the same speed, which is the short-term peak the gearbox can survive — useful for acceleration or occasional overload events, not sustained running.
Backlash, rigidity, and what they mean for positioning
Maximum torsional backlash is 10 arc.min — that is the angular play between input and output when direction reverses. For indexing or positioning axes, this figure governs repeatability; a 10 arc.min gearbox suits general positioning but not high-precision servo axes where sub-arcmin units are specified. Torsional rigidity is 41 N.m/arcmin, meaning it takes 41 N.m of torque to twist the output shaft by one arc-minute. Higher rigidity means less wind-up under load, which matters for stability in servo loops. Rated service life is 30,000 hours at 100 rpm and 30 °C ambient — that is about 3.4 years of continuous 24/7 running at rated torque before the bearings or gears reach end-of-life criteria.
Shaft loads and environmental limits
Maximum axial force on the output shaft is 6000 N for the full 30,000-hour life, or 8000 N if you accept a shorter 10,000-hour service interval. Radial force at mid-span is 4200 N for the long life, 6000 N for the shorter window. The output shaft carries an IP54 ingress rating — sealed against dust and splash, but not submersion. Ambient operating range is -25 to 90 °C, covering most indoor industrial environments without special cooling. The housing is black anodized aluminium, the shaft is C45 carbon steel. The gearbox is lubricated for life — no oil changes or regreasing intervals on the maintenance schedule.
Lifecycle and sourcing — obsolete, sourced through independent channels
No official successor or pin-compatible replacement is recorded from Schneider for this frame size and ratio. The page sources the part through independent surplus and broker channels; quantities are confirmed at RFQ against the buyer's BOM line. For a buyer with a line down or a BOM freeze, the 94 % efficiency and 800 N.m continuous rating confirm the mechanical fit — the 160 mm frame and 20:1 ratio are the dimensions that must match the existing mount and motor interface.