PU Timing Belt
PU Timing Belt: Polyurethane timing belts engineered for precise, high-speed and maintenance-free power transmission.
As a direct factory in Guangzhou with more than 15 years of belt manufacturing experience, GOODLY produces PU timing belts by casting urethane around a high-tensile steel cord or Kevlar core. The result is a timing belt with excellent dimensional stability, low elongation, oil and abrasion resistance, and repeatable tooth engagement in both open-end and truly endless forms.
- ISO 9001 Certified
- 15+ Years OEM/ODM
- Engineer-to-Engineer Support
- Fast Global Shipping
What Is a PU Timing Belt?
A PU timing belt is a synchronous belt cast from polyurethane over a steel or Kevlar cord. The moulded teeth engage the pulley grooves to transmit motion without slip, while the urethane body resists oil, abrasion and water. Because it is cast rather than folded, a PU timing belt holds a very tight pitch tolerance and is the usual choice for accurate, high-speed and clean transmission.
Because we manufacture in our own plant, we can advise on the right compound, cord and tooth profile for your machine before you order, and back it up with sample belts for your own testing.
Key Advantages of Our PU Timing Belt
Every belt is engineered, moulded and inspected in house, so the advantages below are backed by real production data rather than marketing language.
Steel & Kevlar Cord Options
Choose steel wire for maximum tensile strength or Kevlar cord for a lighter, non-magnetic and corrosion-free belt.
High-Speed Capable
Low mass and balanced cord placement allow stable running at high linear speeds with minimal vibration.
Oil, Water & Chemical Resistant
Polyurethane performs well in oily, damp and mildly chemical environments where rubber would harden or swell.
Tight Pitch Tolerance
Precision machined moulds hold tooth pitch within ±0.02 mm for accurate positioning and synchronous driving.
Abrasion & Cut Resistant
A hard urethane surface extends service life on high-friction drives and machine tools.
Endless & Open-End
Supplied as truly endless belts for high accuracy or open-ended lengths for on-site splicing.
Why Buyers Choose GOODLY as Their PU Timing Belt Supplier
GOODLY is a belt manufacturer in Guangzhou, China, not a trading company. We control the compound, the cord, the moulding and the final inspection, which is why our pu timing belt keeps the same performance from the first sample to the last production batch. Send us a drawing or a used belt and we will match it, improve it if we can, and supply it on a schedule you can plan around.
- PU Timing Belt manufactured in our own Guangzhou factory
- ISO 9001 quality system with records for every batch
- Engineer-to-engineer support from sample to production
- Full material and dimensional reports on request
PU Timing Belt Support from Our Engineering Team
When you buy a pu timing belt through GOODLY you deal directly with the people who make it. Our technical team works from your drawing, sample or machine details, recommends the compound and tension member, and follows the order through production and testing. This engineer-to-engineer support is the reason most of our customers reorder, and it is available before, during and after every shipment.
- Technical drawings and material reports supplied on request
- Samples produced for machine trials before volume orders
- One point of contact from enquiry to delivery
- Export packing and worldwide shipping handled in house
PU Timing Belt Construction and Specifications
Every PU timing belt is built from a urethane compound cast over a tension member. The table below summarises the main construction options we manufacture every day.
- Tooth profileMXL, XL, L, H, XH, T2.5, T5, T10, AT5, AT10, 3M, 5M, 8M, 14M, S2M, S3M, S5M, S8M, S14M
- Belt width6 mm to 150 mm, cut to your drawing
- Tension memberSteel cord, Kevlar cord or aramid cord
- Urethane hardness80A / 85A / 90A / 92A Shore A
- ColourWhite, black, transparent, blue, green and custom colours
- BackingFlat back, cleated, coated or machined to profile
PU Timing Belt Performance Data
The figures below are typical values from our own testing. Your exact application may need a different combination, so tell us the load, speed and environment and we will confirm.
| Tensile strength | Up to 2,400 N per 10 mm width |
| Elongation at break | Less than 4 % over service load |
| Working temperature | –20 °C to +80 °C |
| Pitch tolerance | ±0.02 mm on standard profiles |
| Recommended linear speed | Up to 40 m/s |
| Noise level | Comparable to, or quieter than, equivalent rubber belts |
PU Timing Belt Materials and Reinforcement
We select the compound and the tension member together, because the material combination is what determines how a pu timing belt performs over its working life.
Steel Wire Cord
Highest tensile strength and the tightest length stability for high-torque drives.
Kevlar / Aramid
Low stretch, light weight and non-corrosive for high-speed and precision applications.
Urethane Compound
Hard-wearing surface with excellent resistance to oils, greases and mild chemicals.
Nylon Fabric Layer
Optional low-friction face that reduces running noise and protects the tooth face.
Industries That Use Our PU Timing Belt
From food and packaging to printing and automated assembly, the same engineering discipline is applied to every pu timing belt we ship.
Custom PU Timing Belt Options
Almost every order we make is a variation. Tell us the machine and the product, and we will tailor the pu timing belt to fit.
Cut to Length
Tell us the profile and tooth number and we manufacture to your exact length, open or endless.
Cleats & Guides
PU cleats, side walls, longitudinal ribs and V-guides bonded onto the back.
Colour & Printing
Brand colours, food-grade compounds and laser printed logo or part number.
Special Compounds
Antistatic, food-contact, low-temperature and higher-hardness urethanes available.
Our 8-Step Quality Control for PU Timing Belt
Each pu timing belt passes the following checkpoints before it is packed, and the records are kept against your order number.
PU Timing Belt Frequently Asked Questions
Quick answers to the questions our customers ask most often about pu timing belt.
What is the difference between a PU timing belt and a rubber timing belt?
PU belts are cast from polyurethane over a cord member. They resist oil and abrasion well, hold tight pitch tolerances and are ideal for high-speed, precise and clean applications. Rubber belts are moulded and are often chosen for heavier grip and higher-temperature environments.
Can you make a truly endless PU timing belt?
Yes. We mould truly endless belts on custom mandrels so there is no joint. This gives the best pitch accuracy and is preferred for high-precision drives.
Which cord should I choose, steel or Kevlar?
Choose steel cord for maximum load and the lowest elongation. Choose Kevlar or aramid cord when you need lower weight, higher speed, non-magnetic behaviour or corrosion resistance.
What is your minimum order quantity for PU timing belts?
As a factory we can support both prototype and volume orders. Send us your profile, width, length and annual quantity and we will quote accordingly.
How long does production take?
Standard PU timing belts are typically ready in 7 to 10 working days after drawing confirmation. Custom tooling may add a few days for mould preparation.
Get Your PU Timing Belt Quotation Today
Send us your tooth profile, width, length and annual quantity. Our engineers will reply with a drawing, material recommendation and factory price within one working day.
GOODLY Belts · Guangzhou, China · OEM & ODM welcome · Samples available
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