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Optibelt WR 3M wide angle belts

Polyurethane V-belts · 60° wide angle · 3M section

Optibelt WR belts are polyurethane wide angle V-belts from Optibelt, our premier brand. Their 60° profile gives a large contact area for strong grip in a very compact belt, so they transmit high power in small spaces with reduced vibration. They’re used on compact drives, engines and automotive applications, and machinery where space is tight. Search by the code on the old belt, such as 3M-670, and use the filters to narrow it down by length.

  • 60° wide angleWider contact angle for strong grip in a compact belt
  • PolyurethaneHard-wearing, oil-resistant and runs smoothly
  • Reduced vibrationQuiet, smooth running on compact drives
  • High power, small spaceIdeal where a standard V-belt won’t fit

Choosing an Optibelt WR 3M belt

Reading the codeThe code gives the section and length. 3M-670 is a 3M section wide angle belt 670mm long. Match both from your old belt.

Wide angle pulleys onlyWR belts have a 60° profile and need matching wide angle pulleys. They won’t run correctly in standard V-belt pulleys, and standard V-belts won’t fit wide angle pulleys.

Check the sectionThe number in the section, such as 3M, relates to the belt’s size. If your belt is noticeably wider or narrower, see the other WR sections.

Tip: wide angle belts are easily confused with ribbed or standard V-belts. Look at the belt in cross-section: a WR belt has a single, wide V-profile with a much flatter angle than a standard V-belt.

  • Other sectionsSee Optibelt WR 5M, 7M, 11M wide angle belts.
  • No code?Our how to measure guide shows you what to measure, or send us a photo.
  • Still not sure?Call 020 8138 2848 with the code or machine details and we'll find the right belt.
  • Buying for a business?Open a trade account for trade pricing on maintenance stock and repeat orders.
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