66-56 conversion base is designed to convert 66 to 56 frame electric motors. Continuous improvements made in technology and methodology as led electric motor manufactures to have the capability of producing more efficient motors with more horsepower packed into a smaller frame size. When the circumstance comes up where its time to replace an old motor to a new one with a smaller form factor Instead of having to purchase a whole new mount using a 66 to 56 adapting fixture saves money and hassle without degrading the previous motor mount capabilities or performance.
Install Example Drawing:

These conversion bases/ fixtures are made from high-strength steel. Please note that these are not made for wall or ceiling application (contact us if that application is needed). We also supply a full line of premium electric motors, gear reducers, pulleys, v-belts, roller chains, and sprockets. For more information or to get a quote on 66 to 56 conversion base please contact us and we will be happy to assist you!

66 to 56 Motor Frame Conversion Base Dimensions

• Part #: 66-56-66-56
• Former NEMA Frame Size: 66
• New NEMA Frame Size: 56
• O.A. Height: 5/8"
• Dimension (A): 3/4"
• Dimension (B): 5"
• Dimension (D): 3"
• Dimension (F): 3/4"
• Dimension (G): 1/2"
• Dimension (H): 1/2"
• Dimension (K): 2"
• Dimension (L): 7"
• Dimension (M): 2-15/16"
• Dimension (N): 11/32"
• Dimension (P): 5/16 - 18