NEMA Motor Dimensions Reference Chart

When selecting or replacing electric motors, precision matters. Our NEMA Motor Dimensions Reference Chart provides critical sizing and mounting information to ensure compatibility with your existing setup for seamless installation.

What is NEMA?

The National Electrical Manufacturers Association (NEMA) sets standardized guidelines for motor frame sizes and dimensions, ensuring uniformity across manufacturers. This standardization simplifies the process of selecting motors for industrial, commercial, and residential applications.

Why Use the NEMA Motor Dimensions Reference Chart?

• Accurate Sizing: Quickly identify motor dimensions, including frame size, shaft diameter, and bolt-hole patterns.
• Cross-Compatibility: Ensure your motor fits perfectly into existing machinery or enclosures.
• Efficiency: Avoid costly errors by selecting the correct motor size the first time.

Key Dimensions in the NEMA Chart

• Frame Size: Indicates the overall dimensions of the motor, including length, width, and height.
• Shaft Diameter and Length: Provides critical data for coupling the motor with mechanical components.
• Key Specifications: Ensures proper alignment and torque transmission.

How to Use the Chart

1. Locate your current motor’s frame size on its nameplate.
2. Match the frame size with the corresponding row on the chart.
3. Verify shaft, bolt, and keyway dimensions to ensure compatibility.