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...
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The M3 Z24 spur gear is the most classic and efficient basic component for parallel-shaft transmission. Made of quenched and tempered 45# steel with module 3, 24 teeth, and a pitch circle precisely controlled at 72mm, it balances very high transmission efficiency with excellent value for money.
| Item | Specification |
| Module | 3 |
| Number of teeth | 24 |
| Pressure angle | 20° |
| Material | 45# steel, quenched and tempered |
| Pitch circle diameter | 72mm |
| Transmission ratio | 1:1~6:1 |
| Pitch line velocity | ≤5m/s |
| Transmission efficiency | Up to 99% |
| Machining | Gear hobbing; hardening and keyway machining available on request |
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.

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