Metric LRT series inner ring LRT121713 12 mm ID x 17 mm OD x 13 mm width, high carbon steel hardened ground raceway for machined needle roller bearings, single unit (each)

LRT121713 metric inner ring 12x17x13 mm single unit
✔️ ID 12 mm, OD 17 mm, width 13 mm; High Carbon Steel, hardened

This metric inner ring fits machined type needle roller bearings and provides a hardened, ground raceway to protect shafts and support rollers in gearboxes, reducers, and linear slide units.

✅ Model LRT121713, metric LRT series inner raceway
✅ ID 12 mm, OD 17 mm, width 13 mm
✅ Material high carbon steel, heat-treated and ground raceway
✅ For machined type needle roller bearings; protects shaft surfaces
✅ Single unit (each); economical alternative to bushings

💡 What is an inner ring used for with machined type needle roller bearings? An inner ring provides a hardened running surface when the shaft can't be hardened, making it a handy part for protecting shafts and keeping rollers aligned. - Offers a hardened, ground raceway that reduces shaft wear and extends bearing life, useful for needle roller bearing inner race applications - Supports rollers and keeps proper contact for smooth operation in linear slide units, gearboxes, and sealed ball bearing arrangements - Saves machining time and cost versus reworking shafts, a practical choice when shaft hardness or roughness can't be guaranteed