What this gearbox delivers — and what it can't
The GBX0600120582D is a 60 mm-diameter planetary gearbox with a 12:1 reduction ratio, rated for 44 N.m continuous output torque and a maximum of 70 N.m. That 94 % efficiency figure means you're not losing much heat in the gear mesh — useful when the motor's duty cycle is tight and every watt counts. Noise level is 58 dB at 1 m, no-load — quiet enough for a lab or packaging line where operators work nearby. The straight-tooth design is simpler and cheaper than helical, but it does produce more audible whine under load; budget for that in a noise-sensitive area. Service life is specified at 30,000 hours at 100 rpm and 30 °C. That's about 3.4 years of continuous run time, which is typical for a compact planetary box in this class. It's lubricated for life — no maintenance ports, so when the grease degrades, the box is a replace-it item.
Load ratings and real-world limits
Maximum axial force Fa is 450 N at 100 rpm for the full 30,000-hour life, or 600 N if you accept a shorter 10,000-hour service window. Radial force Fr follows the same pattern: 340 N at mid-shaft for the long life, 500 N for the shorter one. If your application pushes a belt or chain load onto the output shaft, stay under these numbers or the bearing life drops fast. Torsional rigidity is 2.5 N.m/arcmin, and the maximum backlash is 25 arc.min. That's moderate precision — fine for indexing or positioning where a few tenths of a degree won't break the process, but not for a servo axis that needs zero lost motion. The moment of inertia at the input is 0.127 g.cm², which is low enough that a small servo or stepper won't struggle to accelerate the reflected load. The shaft output seal is IP54 — splash-resistant but not washdown-rated. If your line sees high-pressure spray, you'll want to shield the output end or step up to a sealed box.
Obsolete — sourcing reality
Schneider Electric lists the GBX0600120582D as obsolete. That means new-stock supply runs through independent surplus channels — quantities are lot-specific and confirmed at RFQ time. If you're holding a BOM that calls out this exact order code, the best path is to quote the requirement against the available surplus inventory. For a new design, look at current-generation planetary gearboxes in the same 60 mm frame size and 12:1 ratio — the mounting interface and shaft dimensions will be the deciding fit factors.