60:1 planetary reduction with 260 N.m continuous rating
The GBX1200601001F is a 120 mm diameter planetary gearbox from Schneider Electric's GBX series, delivering a 60:1 reduction ratio with 260 N.m continuous output torque at 100 rpm and 30 °C ambient. Peak overload capacity reaches 416 N.m at the same speed and temperature, giving a 1.6× safety margin above the continuous rating for transient loads. Straight tooth geometry keeps the design simple and cost-effective, though at the trade-off of higher noise versus helical gears — the unit measures 65 dB at 1 m under no-load conditions.
Torque capacity and bearing loads at rated life
Rated service life is 30000 hours at 100 rpm and 30 °C, with the gearbox lubricated for life — no regreasing interval to track in a PM schedule. Maximum axial force on the output shaft is 2100 N for the full 30000-hour life, or 2800 N if the application accepts a shorter 10000-hour life at the same speed and temperature. Maximum radial force applied at mid-distance from the output shaft is 1500 N for 30000 hours, or 2000 N for 10000 hours — critical when sizing the coupling or belt drive that loads the shaft.
Stiffness and backlash for positioning accuracy
Torsional rigidity is 12 N.m per arcminute, meaning the shaft twists 1 arcminute for every 12 N.m of applied torque — a useful figure for estimating windup in a servo or stepper system. Maximum torsional backlash is 14 arcminutes, which sets the repeatability floor for bidirectional positioning — acceptable for general indexing but not for precision rotary tables without compensation. Efficiency runs at 94 %, so about 6 % of input power is lost as heat through the gear train — relevant for thermal budgeting in a sealed enclosure.
Obsolete — sourcing through independent channels
Schneider Electric lists the GBX1200601001F as obsolete. No official successor or direct replacement part number is published by the manufacturer. Available through independent surplus and new-old-stock channels. Quantities are lot-specific and confirmed at RFQ. No stock-holding claim is made; each order is sourced per request.