The SPB180-3-2517 pulley is a fundamental transmission component designed for medium-to-heavy loads and high-impact operating conditions. Compared with the SPA series, the SPB groove profile has a wid...
See Details








The M4 Z20 90° straight bevel gear is a standardized tool for transmitting power between intersecting shafts. With a large-end module of 4 and 20 teeth, it is designed for 90-degree perpendicular direction-changing transmission. The quenched and tempered 45# steel provides strength along with excellent value for money.
| Item | Specification |
| Module at large end | 4 |
| Number of teeth | 20 |
| Shaft angle | 90° |
| Pressure angle | 20° |
| Material | 45# steel, quenched and tempered |
| Pitch cone angle | 45° |
| Transmission ratio | 1:1~1:6 |
| Pitch line velocity | ≤5m/s |
| Transmission efficiency | 94%~98% |
| Machining | Gear planing; hardening available |
Shanghai Rentai Transmission Equipment Co., Ltd. is a manufacturer specializing in R&D, production and export of mechanical transmission components. Our main products include taper lock pulleys, taper lock bushes, timing pulleys, V-belts and timing belts. We also provide OEM & ODM custom service for non-standard transmission parts. Our factory covers over 8000 square meters, with more than 100 employees including 22 technical staff. We integrate casting, machining and finishing, equipped with CNC machines and testing instruments, with an annual casting output of 2000 tons. Supported by complete quality management system and international standards, our products are exported to Southeast Asia, Middle East, Europe and America, delivering reliable transmission solutions for global industrial clients.

Industry Experience

Production staff
Annual Production
Factory Area
We are an integrated modern machinery manufacturer specializing in the production of internationally standard pulleys (S...

Pulleys are generally used for power transmission over long distances, so they have a wide range of applications, such a...

Precautions for Installing Welding Platforms When installing the welding platform, place the supporting brackets at the...
