Single inner ring 25 mm ID x 30 mm OD x 18 mm width for metric roller and linear slide units, high carbon steel race for bearing assemblies, fits needle and roller bearings, pack of 1

Single inner ring 25x30x18 mm for bearing assemblies
✔️ Single inner ring, 25 mm ID, 30 mm OD, 18 mm width, high carbon steel

This single metric inner ring is a replacement inner race used with roller, needle, and sealed ball bearing setups in linear slide units, conveyors, and general industrial machinery.

✅ Dimensions: 25 mm ID, 30 mm OD, 18 mm width
✅ Material: high carbon steel, hardened for bearing use
✅ Fits: inner ring for roller/needle bearing and linear slide unit assemblies; compatible with sealed ball bearing configurations and some ceramic upgrades
✅ Applications: conveyor rollers, machine tools, automation, jigs, and general industrial gear
✅ Pack: sold as a single inner ring, one piece per pack

💡 What is an inner bearing ring used for in linear slide units and roller bearings? An inner ring provides the precise running surface for balls or rollers and supports radial loads. Use it to replace worn races or to assemble a custom bearing module. - Provides the internal race that enables smooth rolling contact and preload management, important for sealed ball bearing performance - Works with linear slide units, needle and roller bearings, and can be paired with ceramic balls for upgrades - Helps maintain alignment and rotation quality in conveyors, machine tools, and automation systems