1Pcs Convex Gear 2 Mold — versatile, durable gear element designed for precise spur pinion rack applications. Key benefits Flexible gearing options: choose from 10T to 20T tooth counts to adjust speed, torque and gear ratio for your specific application. Broad compatibility: standard inner hole sizes (8mm, 10mm, 12mm, 14mm, 15mm, 16mm) fit common shaft diameters without custom machining. Built for reliability: constructed with materials for durability and longlasting performance in demanding environments. Improved system performance: accurate tooth profiles provide consistent meshing for smoother motion and predictable operation in linear drive systems. Why customers choose this part Solves mismatch issues: multiple hole sizes and tooth counts reduce the need for adapters or multiple spare parts, simplifying inventory and assembly. Makes tuning easier: swapping tooth counts lets you trade speed for torque or refine positional control without redesigning the drivetrain. Reduces maintenance impact: durable construction helps maintain performance and minimizes unplanned downtime. Typical applications Small automation and CNC linear drives using spur pinion racks for controlled linear motion. Hobby and professional robotics where space and shaft compatibility require multiple inner hole options. or upgrade of small machinery and model mechanical systems that use rackandpinion components. Specifications Product: 1Pcs Convex Gear 2 Mold Teeth: 10T, 11T, 12T, 13T, 14T, 15T, 16T, 17T, 18T, 19T, 20T (options) Inner hole sizes: 8mm, 10mm, 12mm, 14mm, 15mm, 16mm Construction: constructed with materials for durability and longlasting performance in demanding environments Intended use: spur pinion racks and related mechanical systems Installation notes Match the inner hole size to your shaft diameter for a secure fit; use appropriate set screws or retaining methods as required by your system. Select the tooth count based on desired gear ratio and torque requirements. Inspect meshing alignment with the rack to ensure even wear and predictable motion. this Convex Gear 2 Mold when you need a reliable, compatible gear solution for spur pinion rack systems that simplifies installation and tuning while maintaining dependable performance.