Ribbed Multi v Pulleys

YONGHANG delivers a complete range of ribbed multi-V pulleys (Poly-V pulleys / micro-V sheaves) designed to ISO 9982 and DIN 7867 standards. Precision-machined from high-grade aluminum alloy, carbon steel, ductile iron, and cast iron using advanced CNC turning technology, our ribbed pulleys ensure optimal friction grip, low noise, and minimal vibration at high rotational speeds. We support all international profile pitches including PH, PJ, PK, PL, and PM, available in finished bore, pilot bore, and taper lock bushing configurations dynamically balanced for high-speed motor drives.Custom Machining & Mounting CapabilitiesWe supply fully customized Poly-V pulleys tailored to your engineering CAD drawings:
Groove Counts: Custom machined from 3-rib up to 36-rib executions.
Shaft Fixing Options: Precision finished bores (H7 tolerance) with keyways (DIN 6885), set screw holes, D-bores, or Taper Lock Bushing designs.

Poly-V (multi-ribbed) pulleys feature multiple longitudinal V-shaped grooves on their outer circumference. They are engineered to operate with flexible micro-V belts, allowing high velocity ratios over small pulley diameters:
PH Profile (1.60mm Pitch): Miniature ribbed pulleys designed for ultra-compact precision instruments, medical equipment, and small electric tools.
PJ Profile (2.34mm Pitch): The most widely specified industrial profile. Ideal for light-to-medium duty applications, commercial fitness equipment (treadmills, exercise bikes), woodworking machinery, and air compressors.
PK Profile (3.56mm Pitch): Standard profile for automotive accessory drives (alternator/fan belts), high-speed industrial fans, and agricultural equipment.
PL Profile (4.70mm Pitch): Engineered for medium-to-heavy industrial drives, high-output pumps, packaging equipment, and industrial generators.
PM Profile (9.40mm Pitch): Extra-heavy-duty industrial profile built to transmit high horsepower across heavy mining, crushing, and paper mill machinery.