28 N.m continuous, 45 N.m peak — the torque envelope matters
The GBX0600030851G: Rated 28 N.m continuous output torque at 100 rpm and 30 °C — this is the sustained load the gearbox can carry without exceeding its 30000-hour service life target. Peak capability hits 45 N.m at the same speed and temperature, which covers acceleration transients or occasional overloads. The 3:1 reduction ratio pairs with a maximum torsional backlash of 16 arc.min — suitable for positioning axes where absolute precision isn't critical but repeatability within a few arc-minutes is acceptable. Torsional rigidity is 2.3 N.m/arcmin, meaning the shaft twists about 0.43 arcmin per N.m of applied torque — a stiffness figure that keeps windup predictable under varying load.
Obsolete — sourcing through independent channels
Schneider Electric has marked the GBX0600030851G as obsolete. No pin-compatible successor or direct replacement is listed on the official record. Available through independent surplus and broker channels — quantities are lot-specific and confirmed at RFQ. For a line-down or MRO spare, this is the channel to use. No official cross-reference to a current Schneider planetary gearbox exists; a parametric search by torque, ratio, and mounting diameter is the only route to a functional alternative.
96 % efficiency, lubricated for life — fit-and-forget installation
The 96 % efficiency rating means only 4 % of input power is lost as heat — the black anodized aluminium housing dissipates that comfortably in most panel environments without forced cooling. Lubricated for life — no maintenance schedule for grease changes. The shaft output seal is rated IP54, adequate for dry indoor environments but not for washdown or direct spray. Mounts in any position — horizontal, vertical, or inverted — with no oil-level constraints. The 60 mm external diameter fits standard NEMA 23/34 motor frames via the GBX compatibility code.