Multi Ribbed Belts

PIX-X’ceed® Multi Ribbed Belts are an ideal solution for compact drives in household appliances and heavy machinery. Multi Ribbed Belts combine the high flexibility of flat Belts with a high power transmission capacity of V-Belts.

Multi Ribbed Belts enable economic solutions even under difficult drive conditions, such as large transmission ratios, high Belt speeds, small pulley diameters and back idler pulleys. 

Multi Ribbed Belts consist of multiple V-grooves. The design allows operation on small pulley diameters. Multi Ribbed Belts offer high Belt speed. Multi Ribbed Belts are designed for high power transmission ratios and offer high power output. 

PIX-X’ceed® Multi Ribbed Belts are available in PH, PJ, PK, PL and PM profiles, these Belts are available in the standard version, high temperature, elasticated, topcoat; for packaging machinery, FRAS; which are fire-resistant, anti-static Belts and double-sided multi ribbed belts.

PIX-X'ceed® Ribbed / Poly-V Belts

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  • High power transmission capacity
  • Suitable for small pulley diameters
  • Maximum Belt linear speed up to 60 m/sec
  • Highly flexible, noise-free & smooth running
  • Suitable for speed ratios up to 1:30
  • Anti-static oil & heat resistant
  • Temperature range: -25°C to +100°C

Constructional Details

  1. High strength tensile member across the full width for maximum tensile strength and negligible elongation
  2. Special design ribbed driving surface for maximum area of contact and reduced face pressure
  3. Special rubber compound for high frictional grip to transmit uniform power even on smaller pulley diameter


Intermediate sizes are available upon request

Reference Standard

RMA IP-26, ISO 9982 & DIN 7867


Crude oil pumps, Spreaders, Seeding machines, Vegetable crushers, Household appliances, Washing machines, Dryers, Machine tools, Grinders, etc.

Product Range

Section Thickness (mm) Rib Pitch (mm) Min. Pulley Dia. (mm) No. of possible Ribs Manufacturing Range Length Desg.
Min. (mm) Max. (mm)
PJ 3.8 2.34 20 2 to 235 280 5000 Le
PK 4.5 3.56 45 2 to 150* # 280 5000 Le
PL 7.6 4.70 75 2 to 110 500 5000 Le
PL 7.6 4.70 75
2 to 78 5001 12000 Le
PM 13.3 9.40 180 2 to 52 950 5000 Le
PM 13.3 9.40 180 2 to 38 5001 12000 Le


* Belts are available in Moulded type - 60 ribs in each sleeve: PK-710, 720, 730, 740
# Belts are available in Moulded type - 130 ribs in each sleeve: PK-750, 770, 800, 875, 930, 1035, 1040, 1045,1094, 1115, 1170, 1200, 1220, 1240, 1250, 1323, 1363, 1370, 1385, 1397, 1422, 1435, 1515, 1570, 1585, 1665, 1705, 1820, 1835, 1866, 2245

Product Label

FAQ - What are Multi Ribbed Belts?

What are Multi Ribbed Belts?

Multi Ribbed Belts, also known as Poly-V Belts or serpentine Belts, are drive Belts featuring multiple V-shaped ribs running along their length, providing increased surface area for power transmission.

Where are Multi Ribbed Belts commonly used?

They are extensively used in automotive engines, HVAC systems, industrial machinery, and various applications requiring efficient power transmission, such as in compressors and pumps.

How do Multi Ribbed Belts differ from standard V-Belts?

Multi Ribbed Belts have multiple ribs instead of a single wide V-shaped belt. This design allows for increased contact area with the pulleys, enabling higher power transmission capacity and reduced slippage.

What materials are Multi Ribbed Belts typically made from?

They are usually made from a combination of rubber compounds and synthetic materials like polyester or aramid fibers, providing flexibility, strength, and resistance to wear.

What are the advantages of Multi Ribbed Belts?

They offer higher power transmission efficiency, reduced noise, increased flexibility, and the ability to operate in compact spaces compared to standard V-Belts.

How often should Multi Ribbed Belts be replaced?

Replacement intervals depend on usage, load, environmental conditions, and manufacturer recommendations. Regular inspections and adherence to maintenance schedules are crucial.

What are signs that a Multi Ribbed Belt needs replacement?

Signs include visible wear on the ribs, cracking, loss of tension, increased noise during operation, reduced efficiency, or reaching the recommended service life specified by the manufacturer.

Can I replace a Multi Ribbed Belt myself?

Replacing Multi Ribbed Belts requires specific tools and expertise due to their tensioning requirements. It's recommended to have trained technicians or maintenance personnel handle replacements.

How can I maintain a Multi Ribbed Belt for optimal performance?

Regular inspection for wear, proper tension adjustment, alignment checks, and following manufacturer-recommended maintenance schedules are crucial for maximizing belt lifespan and efficiency.

Can Multi Ribbed Belts operate in extreme conditions?

Multi Ribbed Belts are designed to function in various temperatures and conditions but may be affected by extreme heat, cold, moisture, or exposure to certain chemicals.