Planetary gearbox, 16:1 — now obsolete
The GBX1200160554F is a Schneider Electric planetary gearbox with straight teeth, 120 mm outer diameter, and a 16:1 reduction ratio. It delivers 260 N.m continuous output torque at 100 rpm and 30 °C, with a peak of 416 N.m under the same conditions. Schneider has marked this unit obsolete.
Torque, backlash, and bearing loads
Continuous torque is 260 N.m (2301.2 lbf.in) at 100 rpm and 30 °C; maximum output torque reaches 416 N.m (3681.9 lbf.in) at the same speed and temperature. Maximum torsional backlash is 12 arc.min — tight enough for positioning axes that don't need zero-backlash precision. Rated axial force (Fa) is 2100 N at 100 rpm for a 30,000-hour service life at 30 °C, or 2800 N for a 10,000-hour life. Radial force (Fr) at mid-shaft is 1500 N for the longer life target, 2000 N for the shorter. These limits govern the overhung load on the output bearing. Torsional rigidity is 13 N.m/arcmin — the gearbox wind-up under load is predictable and repeatable, which matters for cyclic positioning where the controller compensates for compliance.
Efficiency, noise, and environmental limits
Rated efficiency is 94 % — typical for a single-stage planetary with straight teeth. The 6 % loss is mostly gear mesh friction and bearing drag; it shows up as heat in the housing. Noise level is 65 dB at 1 m, no-load — audible but not deafening in a machine bay. The black anodised aluminium housing (120 mm diameter) dissipates heat and resists corrosion. Shaft output seal is IP54, so splash water and dust ingress are blocked at the output side. Operating ambient range is -25 to 90 °C. The gearbox is lubricated for life — no oil-change interval to schedule. Service life is 30,000 hours at rated torque and 30 °C, which is roughly 3.4 years of continuous 24/7 operation.
Sourcing an obsolete planetary gearbox
Schneider has classified the GBX1200160554F as obsolete. No direct replacement part number has been published. The remaining inventory is the last production stock — once it's gone, the only channel is surplus and broker supply. We source this unit through independent distribution. If you're planning a long production run, buying ahead of the depletion curve is the prudent move — this is exactly the kind of part where a last-time-buy covers you for years.