60 mm planetary, 9:1 ratio, 44 N.m continuous
The GBX0600091003F is a 60 mm-diameter planetary gearbox from Schneider Electric's GBX series, with straight-cut teeth and a 9:1 reduction ratio. It delivers 44 N.m (389.4 lbf.in) continuous output torque at 100 rpm, with a peak of 70 N.m (619.6 lbf.in) at the same speed.
Efficiency, noise, and backlash — real-world trade-offs
Rated at 94% efficiency, this gearbox wastes only 6% of input power as heat — a solid figure for a single-stage planetary with straight teeth. The 58 dB noise level at 1 m, no-load, is quiet enough for a lab bench or a packaging line without an enclosure. Maximum torsional backlash is 20 arc.min — that's standard-grade positioning, not precision servo. For indexing or conveyor drives where repeatability isn't critical, it's fine; for a pick-and-place or rotary table, you'd want a lower-backlash option. Torsional rigidity is 2.5 N.m/arcmin — the shaft wind-up under load is predictable, so if you're sizing for a start-stop application, factor this into the total compliance budget.
Rated life and load limits — how long it lasts
Service life is 30,000 hours at 100 rpm and 30°C ambient — roughly 3.4 years of continuous operation. The gearbox is lubricated for life, so no maintenance schedule beyond keeping the seals intact. Maximum axial force (Fa) is 450 N for the full 30,000-hour life, or 600 N if you accept a shorter 10,000-hour service interval. Radial force (Fr) at mid-shaft is 340 N (30,000 hr) or 500 N (10,000 hr). Overshoot these and the bearings wear out before the gears. Shaft output seal is rated IP54 — splash-proof but not washdown. The housing is black anodized aluminium, shaft material is C45 steel.
Sourcing — obsolete, quoted to order
Schneider Electric has marked the GBX0600091003F as obsolete. No official successor is listed, so replacement is through independent surplus or broker channels. Quantities are confirmed at RFQ — no stock-holding claim from the factory.