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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Non-Standard Transmission Parts are bespoke mechanical components engineered specifically for applications that deviate from conventional industrial norms. These parts are essential for addressing extreme environmental constraints, unique spatial limitations, or unusually high load capacities that standard components cannot handle. Our Non-Standard Transmission Parts are designed using advanced 3D modeling and manufactured through a combination of forging, casting, and multi-axis CNC machining. By altering standard geometries—such as extending hub lengths, modifying keyway dimensions, or applying specialized anti-corrosion coatings—these parts achieve optimal performance under severe operational stress. Ideal for replacing obsolete imported machinery components or upgrading legacy equipment, the Non-Standard Transmission Parts service ensures seamless integration, enhances mechanical reliability, and prevents costly systemic redesigns for specialized industrial operations.
| Item | Specification |
| Custom product categories | Non-standard taper-bush pulleys, special-shaped timing pulleys, special-bore sprockets, non-standard couplings, extended shaft sleeves, etc. |
| Design standards | Dimensional/structural modifications based on DIN, ISO, and ANSI standards |
| Core customization items | Special bore diameters, non-standard keyways, special-shaped spokes, custom number of grooves, special hub lengths |
| Material customization | Gray cast iron, ductile iron, carbon steel, alloy steel, aluminum alloy, or bimetallic combinations as required by the customer |
| Heat-treatment customization | Tooth induction hardening, overall quenching and tempering, surface carburizing and quenching, black oxide rust protection, etc. |
| Inspection capability | CMM dimensional inspection, dynamic/static balance testing, hardness testing |
| Technical services | Selection calculations, transmission solution optimization, and on-site installation guidance |
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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