160 mm planetary gearbox — 5:1 reduction, 450 N.m continuous
The Schneider Electric GBX1600051003F is a planetary gearbox with a 160 mm outer diameter and a 5:1 reduction ratio, delivering 450 N.m continuous output torque at 100 rpm and 30 °C. Maximum output torque reaches 720 N.m at the same speed and temperature, giving a 1.6× overload margin above the continuous rating for peak loads during acceleration or momentary jams. Torsional backlash is held to 6 arcmin maximum, which positions this unit in the precision class for indexing and positioning axes where lost motion must stay under a tenth of a degree.
Load ratings and service life at 100 rpm
Rated service life is 30,000 hours at 100 rpm and 30 °C — a common benchmark for continuous-duty conveyor or rotary indexing applications running 24/7 for about 3.4 years before bearing and gear wear reach end-of-life. Maximum axial force (Fa) on the output shaft is 6,000 N for the full 30,000-hour life, or 8,000 N if the application accepts a reduced 10,000-hour service interval. Maximum radial force (Fr) applied at mid-distance on the output shaft is 4,200 N for 30,000 hours, or 6,000 N for 10,000 hours — the radial limit is the more restrictive load for belt-pulley or chain-sprocket outputs. Torsional rigidity is 38 N.m per arcmin, meaning the gearbox twists about 0.026 arcmin per N.m of applied torque — a stiffness figure that matters when the downstream load has its own compliance and the combined system must hold position under varying torque.
Construction, sealing, and operating envelope
Housing is black anodized aluminium with straight-cut teeth — the straight tooth form is simpler and more efficient than helical, but produces more audible whine at high speeds; the 70 dB noise level at 1 m no-load gives a baseline for enclosure design. Shaft output seal is rated IP54, which keeps dust and splash ingress out of the output bearing — adequate for most factory-floor environments but not for washdown or submerged service. Operating ambient range is -25 to 90 °C, with the gearbox lubricated for life — no oil changes or regreasing intervals to schedule, which simplifies MRO planning for remote or hard-to-access installations. Shaft material is C45 carbon steel, a common medium-carbon grade with good strength and wear resistance for the output shaft under the rated radial and axial loads.
Obsolete — sourcing through independent channels
Availability is limited to independent surplus and broker channels; quantities are lot-specific and confirmed at RFQ time. No pin-compatible or dimensionally identical replacement is documented by the manufacturer. For a BOM line that requires this exact 160 mm, 5:1, 450 N.m planetary gearbox, the sourcing path is a quoted-to-order request through distribution that can locate new-old-stock or serviceable surplus units.