Inner Ring LRTZ202531 Metric needle race, 20 mm ID x 25 mm OD x 31 mm width, high carbon steel for assembly with RNA6904UU, general use in linear slide units and machinery

Metric inner ring LRTZ202531, 20x25x31 mm race
✔️ High-carbon steel inner race, machined for RNA6904UU, 1 pc

This inner ring (metric inner race) is made for needle roller assemblies and is commonly used in linear slide units, machine tools and general industrial machinery. Sold as a single replacement piece for quick repairs.

✅ Part: LRTZ202531 metric inner ring
✅ Bore (I.D.): 20 mm
✅ Outside Diameter (O.D.): 25 mm
✅ Width: 31 mm, machined race
✅ Material: high carbon steel, precision ground
✅ Fits needle roller bearing RNA6904UU; single piece pack

💡 What is an inner ring used for in needle roller bearings? An inner ring provides the precision raceway that supports needle rollers and restores smooth motion. Here’s why it’s handy: - Gives a hardened raceway for needle roller bearing inner ring applications in linear slide units. - Restores alignment and load distribution for machine tool guides and bearing assemblies. - Ideal for replacement in repair jobs where sealed ball bearing or ceramic options aren’t used.