Overview

Uni-Drive Needle Roller Bearings are compact, high-performance bearings that use cylindrical needle-shaped rollers with small diameters and extended lengths. Their unique structure provides high load capacity, rigidity, and precision while maintaining a low cross-sectional profile, making them ideal for applications where space and weight reduction are critical.

Key Features

• High Load Capacity in Compact Size – Handles heavy radial loads with minimal bearing space.

• Low Cross-Section Height – Enables more compact and lightweight machinery designs.

• Excellent Rigidity & Rotational Accuracy – Long, slender rollers ensure smooth rotation and minimal deflection.

• Low Inertial Force – Ideal for oscillating and reciprocating motion, providing stable performance at varying speeds.

• Easy Replacement – Can be used to replace sliding or plain bearings for improved efficiency and reduced friction losses.

• Wide Range Available – Drawn-cup, solid, cage-guided, and thrust needle types offered to suit different operating conditions.

Applications

• Automotive transmissions and gearboxes

• Pumps, compressors, and reduction gears

• Power tools, robotics, and small precision equipment

• Construction and agricultural machinery

Size Range & Availability

• Inner bore diameters: from 3 mm up to 120 mm

• Outer diameters: up to 150 mm (depending on type)

• Widths: typically 8 mm – 60 mm