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 2012 European-standard TB taper bush (Taper Lock Bush) is the most widely used standardized quick-mount connecting component in European-standard transmission systems. Made of HT250 gray cast iron with an 8° external taper, it achieves taper-surface expansion by tightening the bolts, making it an ideal match for SPA series European-standard narrow V-belt pulleys and a wide range of transmission parts.
| Item | Specification |
| Model | 2012 (European standard TB taper bush, Taper Lock Bush) |
| Applicable groove profile | Fits SPA series European-standard narrow V-belt pulleys |
| Material | HT250 gray cast iron |
| Taper angle | 8° external taper |
| Standard bore range | 18mm ~ 50mm (multiple standard bores available) |
| Non-standard bores | Custom small bores from 10mm~42mm can be supplied |
| Bore keyway | Machined to ISO standard |
| Surface treatment | Black phosphating for rust protection |
| Matching bolts | Hex socket head cap screws (supplied with the bush) |
| Standards | European-standard TB taper bush standard, serialized dimensions |
| Versatility | Standard series sizes with strong interchangeability |
| Installation method | Bolt locking, taper-surface expansion connection |
| Packaging | Bulk or carton packing; custom labels supported |
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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