Megatorque Motor PNZ Model (Environment-Resistant Type)

Specifications

How to choose Direct Drive Motors

Points to check when selecting, with the values for this product (Megatorque Motor PNZ Model (Environment-Resistant Type)).

1. 1. Select a rated torque suited to continuous load

   Confirm that the effective torque over the operating cycle (root mean square of friction and acceleration/deceleration torque from the load) is at or below the rated torque. Rated torque of the listed products is 2 to 45 N·m. A small margin causes the motor to overheat and may lead to a stop by overload protection.

2. 2. Check the maximum torque required for acceleration and deceleration

   For applications requiring positioning in a short time, confirm that the acceleration torque, calculated from the load inertia and angular acceleration, falls within the maximum torque. Listed products range from 6 to 135 N·m, with maximum torque set at about three times the rated torque. Also confirm that the load is within the permissible load inertia moment range.

3. 3. Check that outer diameter and height fit the equipment

   This product: Outer diameter 220 to 286 mm

   Outer diameter is 100 to 286 mm and height from the mounting surface is 35 to 170 mm. Where space under the table is limited, a low-profile type or a low center-of-gravity inner rotor type is suitable. Models with higher torque tend to have larger outer diameter and mass (2.4 to 48 kg), so also check the strength of the base structure.

4. 4. Match the hollow bore to the cables and piping

   When passing sensor cables or air piping on the rotary table through the hollow bore, ensure the bore diameter accommodates the outer dimensions of the cable bundles and fittings. The hollow bore of listed products is 32 to 56 mm. If cables will twist with rotation, also consider the permissible rotation angle and the use of a rotary joint.

5. 5. Verify permissible loads applied directly to the rotor

   Because the workpiece or jig is mounted directly on the rotor, confirm that axial load (1000 to 9500 N), radial load, and moment load (20 to 200 N·m) are within permissible values. Moment load tends to be the limiting factor for eccentric or overhanging loads.

6. 6. Compare accuracy, speed, and environmental specifications

   Listed products have a repeatability of ±2 arc-sec, an absolute positioning accuracy of 60 to 70 arc-sec, and a maximum rotational speed of 2 to 10 s⁻¹. For applications that must hold position during power loss, such as vertical axes, select a type with a brake; for environments with water, oil, or dust, select an environment-resistant type equivalent to IP66M.

This guide was written by AI based on the listed products' documents and specification items.

About Direct Drive Motors and all products

Description

Direct drive motor of the PNZ series with enhanced environmental resistance. Used in combination with the EDD driver unit. Care must be taken during installation not to mount the motor upside down.

FAQ

Q. What applications can the Megatorque Motor PNZ Model (Environment-Resistant Type) be used for?

A. It is used in industrial positioning equipment. It is a direct drive motor with environment-resistant specifications.

Q. What are the outer diameter and power supply voltage of the Megatorque Motor PNZ Model (Environment-Resistant Type)?

A. The outer diameter is 220 to 286 mm, and the power supply voltage is 100 to 240 VAC.

Q. How is the Megatorque Motor PNZ Model (Environment-Resistant Type) used in combination with other components?

A. It is used in combination with the EDD driver unit.

Q. Are there any precautions when installing the Megatorque Motor PNZ Model (Environment-Resistant Type)?

A. Care must be taken not to install it upside down.

Written by AI based on the content of the source documents.

Source documents

• Catalog Megatorque Motor 製品資料（NSK） Open page 17
  Found on: https://www.nsk.com/products/megatorque-motors/