Product Description:

The R24SSNA-R1-NS-NV-03 servo motor is produced by Pacific Scientific as part of the R Servomotors series. It functions as an electromechanical actuator in industrial automation, converting commanded current into precisely regulated shaft motion for pick-and-place modules, web tensioners, or coordinated gantry axes. The round 2-inch-class frame and resolver interface support compact machine layouts where installation space is limited. It is suited to small positioning axes where accurate response is needed without increasing the overall machine footprint.

Its continuous stall capability is rated at 1.1 Nm, and this is the maximum torque the shaft can deliver indefinitely without overheating. Peak torque rises to 3.07 Nm, giving short bursts of additional force for acceleration or for overcoming static friction. The rotor inertia is only 0.021 kg·m² × 10⁻³, enabling fast changes in speed while limiting load on the servo amplifier. The low inertia also helps the motor respond quickly to command changes during short indexing cycles. Mechanical dimensions follow a 2.0" OD round frame standard, so the stator fits clamp rings or pilot bores common to miniature packaging machines. A lamination stack length of 4 inches extends the active magnetic path and supports the continuous torque rating without enlarging the outside diameter.

The magnetic circuit uses rare earth (samarium cobalt) magnets, which raise flux density so the motor can produce high torque from a small rotor. Primary position sensing is supplied by a frameless resolver in size 15, giving analog sine-cosine signals for angle tracking at power-up, and there is no secondary transducer in the motor. The housing uses a standard configuration, yet the motor is delivered with no brake, so static holding must be provided externally when power is removed. A plain shaft exits the front bearing with no shaft seal, which lowers drag and suits installations where contaminants are controlled by the machine enclosure. This arrangement helps keep the mechanical package simple for enclosed equipment that already provides protection from dust and fluid exposure.