Is GBX1600081382D still active or already obsolete?
Schneider Electric's own record lists the GBX1600081382D as obsolete, so a fresh factory allocation is no longer the route — independent surplus and broker channels are where this gearbox moves, and lead times track lot availability rather than a production schedule. The datasheet field still reads "current" alongside the obsolete flag, which is the kind of split a buyer should reconcile with the manufacturer's PCN/EOL notice before locking a multi-year BOM.
What 720 N.m peak and 6 arc.min backlash actually mean on this gearbox
The GBX1600081382D is rated for a maximum output torque of 720 N.m with a continuous output torque of 450 N.m — peak for acceleration and shock loads, continuous for thermal sizing of the driven machine. Torsional rigidity of 38 N.m/arcmin is the twist per radian under load; pair it with the maximum torsional backlash of 6 arc.min and you have a gearbox whose positioning error budget is dominated by the backlash figure on reversible servo applications, not the elastic twist. Reduction ratio 8:1 and straight-cut gears keep the unit simple and cost-effective — backlash lands at 6 arc.min rather than the sub-arcmin a helical or planetary-with-preload unit would offer, but the efficiency holds at 96 % at the listed duty and the acoustic signature is a flat 70 dB at 1 m, no-load.
Service life, load curves, and the 100 rpm window
Schneider rates the gearbox for 30 000 h at 100 rpm and 30 °C — that is the reference operating window against which the axial and radial load curves are published. Above 100 rpm or above 30 °C ambient the L10 horizon shortens; below it the envelope extends. The shaft is lubricated for life, so the buyer does not schedule a grease interval — only a mechanical-condition check at overhaul. Maximum axial force Fa is 6000 N at 100 rpm over the full 30 000 h service envelope, rising to 8000 N at 100 rpm if the duty is capped at 10 000 h. Maximum radial force Fr at mid-distance from the output shaft is 4200 N over 30 000 h and 6000 N over 10 000 h at 100 rpm. These are the numbers that constrain the pulley, pinion or coupling selection on the output side.
Environment, mounting, and the 160 mm frame
The shaft output carries an IP54 seal — splash- and dust-resistant but not washdown-rated; deploy it inside a cabinet or on a sheltered section of the line rather than at the wet end. Operating envelope is −25…90 °C and the gearbox mounts in any attitude, so the unit fits on a vertical slide, an inverted mount, or a horizontal reducer pad without changing the lubrication regime. Mechanical build is a C 45 steel shaft in a black anodized aluminium housing with a 160 mm external gearbox diameter. Moment of inertia at the input is 4.63 g.cm² — small enough that the gearbox does not dominate the servo loop's inertia ratio when paired with the typical mid-frame Lexium or similar servo in this 160 mm class.