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Megatorque Motor PS Model

PS Model / NSK (Official website) / Listed on page 4 of the document

A direct drive motor that drives the load directly without gears or other transmission elements. Used in combination with the EDD driver unit, and available in multiple sizes with an outer diameter of approximately 100 to 300 mm.

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Megatorque Motor PS Model on page 4 of NSK "Megatorque Motor 製品資料（NSK）"
Source: NSK「Megatorque Motor 製品資料（NSK）」page 4
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Specifications

Power supply voltage 100~240 VAC
Maximum Driver Unit Loss 60 W

How to choose Direct Drive Motors

Points to check when selecting, with the values for this product (Megatorque Motor PS Model).

  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

    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

A Megatorque motor that enables high-precision positioning by directly mounting the load. A combination table for compatible EDD driver units is provided, and the motor is UL and CE compliant. For installation, it is mounted directly to the base, and maintaining a high resonance frequency is recommended.

Features

  • Gearless direct drive
  • UL and CE compliant
  • Can be combined with the EDD driver unit

Applications

  • Semiconductor manufacturing equipment
  • Industrial positioning equipment

FAQ

Q. What type of motor is the Megatorque Motor PS Model (model number not set), and what applications is it suited for?
A. It is a direct drive motor that drives the load directly without gears or other transmission elements. It is a Megatorque motor that enables high-precision positioning by directly mounting the load, and is used in semiconductor manufacturing equipment and industrial positioning equipment.
Q. How should the driver unit and power supply voltage be selected for the Megatorque Motor PS Model?
A. It is used in combination with the compatible EDD driver unit. A combination table for compatible driver units is available. The maximum loss of the driver unit is 60 W, and the power supply voltage is 100 to 240 VAC.
Q. What sizes are available for the Megatorque Motor PS Model, and what should be considered during installation?
A. Multiple sizes are available with an outer diameter of approximately 100 to 300 mm. For installation, it is mounted directly to the base, and maintaining a high resonance frequency is recommended.
Q. Is the Megatorque Motor PS Model UL and CE compliant?
A. Yes, it is UL and CE compliant.

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

Source documents

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