What are the differences in specifications between rubber synchronous belts and polyurethane synchronous belts?
Based on material composition, synchronous belts can be classified into two main types: those made of neoprene reinforced with fiber cords, and those made of polyurethane reinforced with steel wires. In terms of tooth profile, they are primarily categorized into two major groups: trapezoidal teeth and curvilinear teeth. Furthermore, based on the arrangement of the teeth, they can be subdivided into single-sided synchronous belts and double-sided synchronous belts. Polyurethane synchronous belts are manufactured using an exceptionally wear-resistant polyurethane material—which possesses a tensile strength three to four times greater than that of standard black rubber—and are formed with embedded steel wires or aramid fibers.
These belts demonstrate outstanding performance across various attributes, including mechanical strength, wear resistance, oil resistance, and weather resistance, offering advantages that are unparalleled by traditional black rubber belts. As the next generation of conveyor and power transmission belts, polyurethane synchronous belts are now widely utilized across a broad spectrum of industrial applications.
Rubber synchronous belts are manufactured using high-quality imported neoprene as the primary raw material, blended with various auxiliary additives tailored for specific functions. The internal reinforcement structure consists of high-grade imported fiberglass cords, while the surfaces of the belt teeth are protected by a highly elastic Nylon 66 fabric lining. Rubber synchronous belts are characterized by excellent dynamic flexural properties, superior resistance to cracking, exceptional ozone resistance, and strong resistance to aging, heat, oil, and abrasion. Neoprene synchronous belts are widely utilized in the mechanical equipment of the textile, automotive, chemical fiber, tobacco, papermaking, printing, and chemical industries. In recent years, demand from the mining and metallurgy, steel machinery, and medical equipment sectors has been steadily increasing.
**Common Specifications for Rubber Synchronous Belts**
1. **Trapezoidal Teeth:** MXL, XL, L, H, XH, XXH
2. **Double-Sided Trapezoidal Teeth:** DXL, DL, DH
3. **Curvilinear (Semi-Circular) Teeth:** HTS (HTD) Series
a) 3M, 5M, 8M, 14M, 20M
b) Double-Sided Teeth: D3M, D5M, D8M, D14M
4. **Wedge-Shaped Teeth:** STS Series
a) S2M, S3M, S4.5M, S5M, S8M, S14M
b) Double-Sided Teeth: DS4.5M, DS8M, DS14M
5. **Concave-Crested Teeth:** RPP (Low-Noise Type; Interchangeable with HTD)
a) P3M, P5M, P8M, P14M
b) Double-Sided Teeth: DP5M, DP8M, DP14M
Polyurethane synchronous belts are manufactured using imported thermoplastic polyurethane materials. They possess superior abrasion resistance, and the inclusion of various types of steel wire cores ensures that they maintain excellent operational stability during power transmission, all while adhering to tight manufacturing tolerances. During the production process, a layer of nylon is applied to the tooth surfaces and/or the belt's backing to ensure consistent performance characteristics in specialized applications; additionally, an extra-thick layer of polyurethane can be added to the belt's backing to provide protection against corrosion or to accommodate heavy-load conditions.
Based on material composition, synchronous belts can be broadly categorized into those made of neoprene rubber reinforced with fiber cords, and those made of polyurethane reinforced with steel wires. Based on tooth profile, they are primarily classified into two major categories: trapezoidal teeth and curvilinear (circular arc) teeth. Furthermore, based on the arrangement of the teeth, they can be further subdivided into single-sided synchronous belts and double-sided synchronous belts.
