R34KENP-R2-NS-VS Pacific Scientific
Wake Industrial LLC is not an authorized distributor of this product.
The Pacific Scientific R34KENP-R2-NS-VS is a servo motor from the R Servomotors series, featuring a 3.25 inch square frame and a rare earth samarium cobalt magnet. It delivers a continuous stall torque of 3.2 Nm, peak torque of 8.3 Nm, and operates at a rated speed of 4000 RPM. This explosion proof motor uses a frameless resolver for primary feedback and includes a Viton shaft seal with a 4 inch stack length.
Internal Product Review
The R34KENP-R2-NS-VS is a Pacific Scientific servo motor with an explosion-proof housing and a rated speed of 4000 RPM. Continuous stall torque of 3.2 Nm paired with peak torque of 8.30 Nm gives the unit strong low-speed authority and confident acceleration. Frameless resolver feedback and samarium cobalt magnets make this motor a highly dependable choice for demanding motion applications.
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Product Description:
The R34KENP-R2-NS-VS is a servo motor produced by Pacific Scientific for its R Servomotors series. As a brushless rotary actuator, it interfaces with digital drives to position machine elements with high accuracy and repeatability. By translating command current into proportional torque, the motor supports indexing, tension control, and coordinated multi-axis motion in automated assembly cells, packaging equipment, and process lines that require closed-loop feedback.
The motor delivers a continuous stall torque of 3.2 Nm, allowing it to hold loads indefinitely without exceeding thermal limits when adequate cooling is provided. For rapid acceleration or transient disturbances, it can supply a peak torque of 8.30 Nm. Its rated speed is 4000 rpm, enabling fast cycle times while keeping bearing velocities within design limits. Rotor inertia measures 0.11 × 10⁻³ kg·m², balancing dynamic response with positional stability. An explosion-proof housing surrounds the magnetic and electrical components so the servo can operate in applicable hazardous locations without becoming an ignition source. The medium-high winding group is compatible with drives that use a moderate bus voltage, while imperial mounting threads simplify attachment to existing motor plates.
Magnetic performance is generated by a rare-earth samarium-cobalt rotor assembly that maintains high flux density throughout the operating range. The stator stack follows the 34 frame code, with an overall cross section that is 3.25 inches square and a stack length of 4 inches. These proportions keep the motor compact while preserving sufficient copper volume for sustained thermal loading. Position feedback is provided by a frameless size-21 resolver, and the lack of a secondary transducer maintains a single-loop feedback architecture. A Viton shaft seal helps prevent oil or solvent from entering at the output end. The motor is supplied without a holding brake, which reduces resistance to back-driving in continuous-rotation applications.
