What this gearbox delivers — and what it won't
The GBX0600251004F is a 60 mm planetary gearbox with straight teeth, a 25:1 reduction ratio, and a continuous output torque of 40 N.m at 100 rpm. Maximum output torque hits 64 N.m at the same speed, but the continuous rating is the one you size the axis for — the 30,000-hour service life is quoted at the continuous figure. Efficiency is 94 %, which is typical for a single-stage planetary of this size — the straight-cut teeth keep losses low but trade off a bit of noise versus helical gears. Noise level is 58 dB at 1 m, no-load, so it's quiet enough for a lab or packaging line without an acoustic enclosure.
Mechanical limits and mounting reality
Maximum axial force on the output shaft is 450 N for the full 30,000-hour life, or 600 N if you accept a shorter 10,000-hour service. Radial force is 340 N at mid-shaft for the long life, 500 N for the shorter window — these are the numbers that govern bearing life, not the torque rating. The housing is black anodised aluminium, 60 mm diameter, with a shaft output rated IP54 — fine for dry indoor use but not washdown. Ambient operating range is -25 to 90 °C, and the gearbox is lubricated for life, so no maintenance ports to plumb. Maximum torsional backlash is 20 arc.min — that's the total lost motion at the output under reversing load. For positioning axes that need better than 0.3° repeatability, you'd step up to a low-backlash or preloaded planetary.
Obsolete — sourcing the GBX0600251004F today
Available through independent surplus and broker channels. Quantities are lot-specific and confirmed at RFQ — no stock-holding claim, no lead-time number. If you need a drop-in replacement for a BOM line, the 60 mm frame, 25:1 ratio, and 40 N.m continuous torque are the dimensions to match.