N31HRHH-LNK-NS-00 Pacific Scientific
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The Pacific Scientific N31HRHH-LNK-NS-00 is a stepper motor from the POWERPAC N Stepper Motors series, built with a standard construction and a 3.38 inch square NEMA 34 frame. It provides a holding torque of 4.6 Nm, features 200 full steps per revolution with a step angle of 1.8 degrees, and comes with a single straight key shaft without a shaft seal. This motor utilizes a 4 lead parallel connection style, has a laminated rotor design, and maintains an insulation resistance of 100 Megohms at a voltage rating of 340 Vdc.
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Product Description:
The N31HRHH-LNK-NS-00 is a stepper motor manufactured by Pacific Scientific as a member of the POWERPAC N Stepper Motors series. It uses a standard construction with a laminated rotor in a single 1-stack layout. A single straight-key shaft exits the front end, and the frame is drilled for heavy-duty NEMA mounting while omitting a shaft seal for installations kept free of liquid ingress. Regular leadwire terminations and the lack of an internal feedback device support open-loop positioning tasks in pick-and-place modules, index tables, and general material-handling equipment. Because the motor is configured for open-loop use, the controller sends step commands without receiving encoder data from the motor body. This arrangement suits systems that rely on predictable load conditions and straightforward drive electronics.
The motor is built on a NEMA 34 frame that measures 3.38 in. square, giving it compatibility with many motion platforms that use this bolt pattern. The rotor advances by 1.8° per full step, giving 200 full steps per shaft revolution. A holding torque of 4.6 Nm allows the shaft to keep loads static when current is applied, which is useful for vertical axes and long dwell cycles. The windings are rated for an insulation voltage of 340 VDC, and the standard coil design supports operation from common chopper drives while maintaining thermal integrity. This stepping format is commonly used where repeatable indexing is more important than continuous high-speed motion.
Overall body length is 94 mm, keeping the machine envelope short where mounting depth is limited. The insulation system provides up to 100 Megohms of resistance to ground, which helps limit leakage current in humid operating areas. Power is delivered through a 4 lead parallel configuration that supports higher phase current at lower inductance, improving low-speed torque response. The parallel lead arrangement can also help the drive deliver current quickly during start-stop motion. Step accuracy remains within ±3% of the commanded position, which is suitable for most indexing and feed-to-length duties where repeatability matters more than closed-loop linearity.
Frequently Asked Questions about N31HRHH-LNK-NS-00:
Q: What is the holding torque of the N31HRHH-LNK-NS-00 stepper motor?
A: The N31HRHH-LNK-NS-00 stepper motor has a holding torque of 4.6 Nm.
Q: What are the frame dimensions and type of the N31HRHH-LNK-NS-00?
A: This motor features a frame size of 3.38 inches square and conforms to NEMA 34 standards.
Q: How many steps per revolution does the N31HRHH-LNK-NS-00 provide and what is the step angle?
A: It operates with 200 full steps per revolution, each step being 1.8° in angle.
Q: What are the features of the shaft design for the N31HRHH-LNK-NS-00?
A: The shaft has a straight key design and does not include a shaft seal.
Q: Does the N31HRHH-LNK-NS-00 stepper motor include an encoder for feedback?
A: There is no feedback device on this model, as it is not equipped with an encoder.
