The GBX0600030584D: This is a stocked production part, not a legacy or surplus item.
Torque ratings that govern the drive train
Continuous output torque is 28 N.m — this is the sustained load the gearbox carries in normal operation. Maximum output torque reaches 45 N.m, which covers acceleration peaks and short-duration overloads without exceeding the gear train's mechanical limit. The 3:1 reduction ratio paired with 96% efficiency means input power losses are low — roughly 4% of the transmitted energy is lost to friction and windage, which keeps thermal rise manageable in continuous-duty cycles. Service life is rated 30,000 hours at 100 rpm output speed at 30 °C ambient. If your application runs hotter or faster, derate the service interval accordingly — the 30,000-hour figure assumes the rated thermal envelope.
Mechanical interface and mounting constraints
Gearbox external diameter is 60 mm with a black anodized aluminium housing. Shaft material is C45 steel — standard medium-carbon grade with good wear resistance for the output shaft interface. Mounting position is any orientation, which simplifies integration into tight enclosures or vertical-axis drives. The shaft output seal is rated IP54 — protected against dust ingress and splashing water, but not immersion. For washdown environments, additional shaft sealing is needed. Maximum axial force Fa is 450 N at 100 rpm for the 30,000-hour service life, or 600 N for a 10,000-hour duty cycle. Radial force Fr at mid-shaft is 340 N for the longer life target, 500 N for the shorter. These limits define the overhung load capacity on the output shaft — exceeding them shortens bearing life.
Backlash and stiffness for positioning accuracy
Maximum torsional backlash is 20 arc.min — this is the angular play between input and output when reversing direction. For indexing or positioning applications, 20 arc.min is a standard precision grade; if your axis requires tighter repeatability, a lower-backlash variant from the GBX family would be needed. Torsional rigidity is 2.3 N.m/arcmin, meaning each arc-minute of wind-up requires 2.3 N.m of applied torque. This stiffness figure matters when sizing the servo loop gain — higher rigidity lets the controller use higher proportional gains without oscillation.
Environmental and maintenance profile
The gearbox is lubricated for life — no scheduled oil changes or regreasing intervals, which reduces maintenance overhead in hard-to-access installations. Noise level is 58 dB at 1 m, no-load — this is the acoustic signature of the straight-tooth planetary set running without load. Under load, expect a modest increase; 58 dB is quiet enough for operator-adjacent mounting without additional sound enclosure. Moment of inertia is 0.135 g.cm² reflected to the input — low enough that servo tuning won't be dominated by the gearbox inertia in most motion profiles.