A poly-V pulley has multiple small, ribbed grooves instead of a single V-shaped channel, allowing it to run a poly-V (multi-rib) belt with more grip and less slippage in a compact footprint. 3BG Supply stocks poly-V pulleys across a range of groove counts and bore sizes, alongside our V-belt pulleys and timing pulleys. Explore the full pulleys and sheaves category or contact our team for help matching a pulley to your belt.
Find the right Poly V Pulley for your needs.
FAQs
What is a poly-V pulley?
A poly-V pulley is a pulley machined with multiple small, longitudinal ribs designed to mate with a poly-V (multi-rib) belt, rather than the single wide channel found on a standard V-belt pulley. The multiple contact ribs increase grip and allow more power to be transmitted through a smaller-diameter pulley.
How is a poly-V pulley different from a standard V-belt pulley?
A V-belt pulley has one or more single wide grooves that each carry a separate V-belt, while a poly-V pulley has many small ribs that all mate with a single, wider poly-V belt. Poly-V systems tend to run quieter and handle higher speeds in a more compact package.
How do I find the right poly-V pulley dimensions for my belt?
Match the pulley's rib count and rib profile (commonly J, L, or M section) to your belt's rib count and section size, then confirm the pitch diameter matches your required speed ratio. Our team can help cross-reference dimensions if you are replacing an existing pulley.
What materials are poly-V pulleys made from?
Poly-V pulleys are most commonly cast or machined from steel or aluminum, with steel favored for heavier industrial loads and aluminum used where reduced weight or inertia matters. 3BG Supply stocks both options across common bore and groove configurations.
Does 3BG Supply offer custom poly-V pulley designs?
Yes, in addition to stocked poly-V pulleys, 3BG Supply can source custom designs to match specific rib counts, bore sizes, or bolt patterns for OEM and replacement applications. Contact our team with your specifications or an existing sample part for a quote.
Where can I find poly-V pulley suppliers for OEM applications?
3BG Supply works directly with leading pulley manufacturers and can supply poly-V pulleys for OEM production runs as well as one-off replacement parts. Reach out through our contact page to discuss volume pricing and lead times.
Industrial Poly V Pulley Manufacturers
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