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TERMINOLOGY GUIDE
The following selection guide is designed to help you determine the correct motor for your application. It is written in general terms and is intended only as an aid. The customer is solely responsible for the motor performance and suitability in applications for their use.
No application fitness approval is implied as that can only be determined by the customer. If further assistance is required in selecting the proper motor, please contact RAPA Electric Motors Service.
AGENCIES:
U.L. (Underwriters Laboratory) and CSA (Canadian Standards Association)
Where applicable, our motors including Inverter Duty, have UL listing for explosion proof enclosures, UL recognized construction for non-explosion proof enclosures, and UL recognition as a motor/protector combination. Our motors are also CSA certified for both explosion proof and non-explosion proof enclosures.
BEARINGS:
Motors come with either sleeve bearings, ball bearings, or roller bearings. Sleeve bearings are more economical and quieter than ball. Ball bearings carry heavier loads and can withstand more severe applications. Roller bearings are used in large motors for belted loads. Belting data must be provided on all belted applications. Standard horizontal motors can be mounted in a vertical shaft down orientation (brakemotors exempt).
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