LRB273220 inner race for machined needle roller bearings, ID 27 mm (1.063 in) OD 32 mm (1.260 in) Width 20 mm (0.787 in), inch series, heat-treated high-carbon steel precision raceway, oil-hole option, shaft support
✔️ ID 27 mm (1.063 in) OD 32 mm (1.260 in) W 20 mm (0.787 in)
This is a single inner ring designed for machined-type needle roller bearings, typically used to give rollers a hardened raceway when shaft hardening isn’t possible. Common in industrial drives, transmissions, and linear slide units where shaft protection is needed.
✅ Model: LRB273220, inch series inner ring, machined fit✅ Material: high carbon steel, heat-treated and ground raceway
✅ Compatibility: for machined needle roller bearings; supports shaft diam. 27 mm (1.063 in)
✅ Features: oil-hole lubrication option, small chamfers and taper relief available
✅ Weight: approx. 0.320 lb; economical alternative to bushings for repair or retrofit
💡 What is an inner ring for needle roller bearings used for in shaft support applications? An inner ring gives needle rollers a hardened, precise raceway when the shaft surface can’t be hardened or finished to spec. Quick overview: - Provides a hardened raceway to prevent premature shaft wear and improve roller life, handy for repair and maintenance. - Ideal when shaft hardness or surface finish is out of tolerance; simplifies bearing replacement and reduces machining. - Works well with sealed ball bearing setups, linear slide unit retrofits, or when upgrading to ceramic or specialty rollers. - Common use cases: transmissions, gearboxes, industrial actuators, and compact powertrains where space and shaft conditions limit options.