PMA57R-01100-00

Product Description:

The PMA57R-01100-00 from Pacific Scientific comes out of their PMA Brushless Motors series and centers on motion setups that call for solid, controllable turns. Size on this model hits at 57 mm frame, landing it right in the zone for compact industrial gear. Rated holding torque is 1.0 Nm, so here the motor keeps its spot even when stop-and-hold routines come up a lot. Current for each phase sits at 2.8 amps, covering steady draw without cooking the internals. The step angle is 1.8°, which means the motor deals out fine, predictable moves—parts shift where they should, and mistakes stay low.

On the install side, mounting gets straightforward since the dimensions and shaft diameter of 6.35 mm slot into standard brackets or couplings. Total weight holds at 0.65 kg, making swaps and replacements a lot less back-breaking. The winding is DC style, so electrical setups keep it simple, with a resistance per phase of 1.1 Ω and inductance pegged at 2.7 mH. This unit rolls out with 4 leads, and temperature tolerance goes to 80°C, useful for busy days under heavy cycles. Precision moves get an extra boost from low rotor inertia at 220 g·cm², which helps with quicker speed shifts and sharper stops.

Environmental exposure isn’t going to slow this motor down. The shaft and body construction don’t back off against dust or errant splashes from standard plant washdowns. Even during repetitive cycles in conveyor lines or compact robotics, the insulation and metalwork keep it steady. Keywords like “reliable” and “precise” fit, since the specs match up with demanding applications in automation and lab devices. Anyone rolling out an upgrade or doing a new build with high-duty stepping needs what this part handles: secure mounting, lean electrical footprint, cost-effective torque, and responsive turns—tight and simple, job after job.