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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This L-type trapezoidal-tooth timing belt follows the imperial circular-pitch standard (pitch 9.525mm / 3/8 inch) and is the most widely used, most versatile classic belt type in light-to-medium industrial transmission. Made of chloroprene rubber with a fiberglass tension layer, it is tailor-made for automated equipment that needs precise synchronization, low noise, and maintenance-free operation.
| Item | Specification |
| Model | L type (trapezoidal tooth, imperial circular-pitch system) |
| Tooth profile | Trapezoidal tooth (square tooth) |
| Standards | GB/T 11616 / ISO 5296 |
| Pitch | 9.525mm (3/8 inch) |
| Tooth angle | 40° |
| Tooth height | 1.91mm |
| Belt body thickness | 3.60mm |
| Belt width specifications | 050 (12.7mm), 075 (19.1mm), 100 (25.4mm), 150 (38.1mm), etc. |
| Tooth count range | Corresponds to pitch length, e.g. 150L (40 teeth), 187L (50 teeth), 240L (64 teeth), 300L (80 teeth), etc. |
| Pitch length range | Multiple sizes under the imperial circular-pitch system (e.g. 150L = 381.00mm, 300L = 762.00mm) |
| Body material | Chloroprene rubber (CR) |
| Tension member | Fiberglass cord |
| Tooth surface wear layer | Nylon fabric (nylon 66 high-elasticity fabric) |
| Color | Black |
| Operating temperature | -20℃ ~ +100℃ |
| Performance features | Oil-resistant, wear-resistant, anti-static, low elongation, accurate transmission ratio, no slip, lubrication-free |
| Power transmission range | 0.05~4.76kW at the reference belt width of 25.4mm |
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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