Needle Bearing, 1/2"X11/16"X3/4"

Needle Bearing, 1/2"X11/16"X3/4"

The B812 Needle Roller Bearing (1/2" × 11/16" × 3/4") is a compact needle roller and cage assembly designed to provide high load-carrying capacity in limited space applications. Featuring a low cross-section design without an inner or outer ring, the bearing allows the shaft and housing to serve as raceways, maximizing strength and efficiency within a minimal footprint. The full complement of mechanically retained needle rollers ensures consistent load distribution and smooth rotation. Unsealed for applications where lubrication is supplied externally, this bearing is commonly used in machinery, gear assemblies, and power transmission equipment—because sometimes the smallest components carry the biggest loads.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: B812
• Product Type: Needle roller and cage assembly
• Series: B Series (standard series)
• Inside Diameter (ID): 1/2 in.
• Outside Diameter (OD): 11/16 in.
• Width: 3/4 in.
• Design: Needle rollers retained by cage
• Construction: Full complement of mechanically retained needle rollers
• Bearing Style: Open / unsealed
• Raceway Requirement: Uses shaft and housing as raceways
• Cross Section: Low profile for compact installations
• Lubrication: External lubrication required

Series Notes

• B Series: Standard series with full complement of needle rollers
• BH Series: Heavy-duty series with full complement of needle rollers
• OH designation: Includes oil hole for lubrication

Ideal For

• Compact machinery and mechanical assemblies
• Power transmission systems
• Gearboxes, pumps, and agricultural equipment
• Applications requiring high load capacity with minimal space
• Situations where a small bearing has to carry a surprisingly big workload