Needle Roller Bearing

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High-Precision Needle Roller Bearings--CAGRI Bearings

Product Overview

Cagri Bearings- Professional Supplier of Needle Roller Bearings. Needle Roller Bearing is a type of roller bearing characterized by slender rollers (usually ≤5mm in diameter) with length significantly larger than diameter, achieving high load capacity through line contact. Core classifications are divided by load direction into Radial Needle Roller Bearings and Thrust Needle Roller Bearings, including sub-types such as Drawn Cup, Solid Type, Needle Roller and Cage Assemblies, and Bolt Type Track Rollers. Main model series cover NK, RNA 49, HK, NKI, etc., e.g., RNA 4902 (bore 15mm, outer diameter 24mm, width 14mm), NKI 12/16 (bore 12mm, outer diameter 19mm, width 16mm). Precision grades comply with ISO/GB standards, including needle roller grades G2, G3, G5, and bearing precision grades P0, P2, P4, P6 with tolerances meeting ABEC 1-9 standards, suitable for high-precision equipment requirements.

What is Needle Roller Bearings?

Needle Roller Bearings is a precision transmission component that uses slender needles as rolling elements to achieve low-friction and high-rigidity power transmission, mainly adapting to working conditions requiring “limited space but high load”. Its unique structure enables radial load capacity 2-8 times higher than ball bearings in the same installation space, with a small cross-sectional height, facilitating equipment miniaturization and lightweight design. Compatible products cover multiple fields: automotive transmissions, planetary gear reducers, engine piston pins, new energy vehicle motors; industrial machinery such as robot reducers, machine tool guides, axial piston pumps, compressors; agricultural machinery engine starters, plow arms; office equipment like ATM machines, printer paper feeders, etc. In addition, for complex working conditions, customized variants such as sealed, outer ring-free, and full-complement needles are available, directly using shafts or housings as raceways to further optimize space utilization.

CAGRI Needle Roller Bearing Advantages

With years of experience in the Needle Roller Bearing industry, CAGRI has formed five core competitive advantages through technological innovation and strict quality control, establishing a brand image of “high precision, high reliability, and high adaptability” in the global market:

1.Ultimate Space Efficiency：30%-50% smaller volume than ball bearings with the same load; ultra-thin outer ring design (drawn cup type) eliminates the need for retaining rings or bearing shoulders, and press-fit installation simplifies structure, significantly saving internal equipment space.

2.Super High Load Capacity：Made of high-carbon chromium bearing steel such as GCr15 and G20Cr2Ni4A, through vacuum degassing and carburizing quenching; Controlled Contour technology relieves stress concentration, providing excellent radial load capacity to withstand impact loads and high-speed operation (limit speed up to 12,000rpm).

3.Low Friction & High Energy Efficiency：Precision-ground needles paired with brass/stainless steel cages, friction coefficient as low as 0.001-0.002, reducing power loss and improving equipment efficiency, suitable for new energy motors with high-speed working conditions above 20,000rpm.

4.High Adaptability & Durability：Available in precision grades P0-P6, clearance grades C0-C5, and vibration grades Z1V1-Z4V4; sealed type adopts labyrinth structure pre-filled with high-quality grease, featuring strong wear resistance and pollution resistance, with fatigue life exceeding 8,000 hours.

These advantages make the CAGRI **Needle Roller Bearing** the ideal choice for your precision machinery requirements.

Application

Automotive Industry
Transmission System	Transmissions, Planetary Gear Reducers, Differentials
Engine/Motor	Piston Pins, NEV Motors, Torque Converters
Chassis Components	Suspension Systems, Steering Rockers, Shift Fork Shafts

Industrial Machinery
General Machinery	Axial Piston Pumps, Compressors, Gearboxes
Precision Equipment	Robot Reducers, Machine Tool Guides, Linear Actuators
Specialized Machinery	Textile Machinery, Printers, Power Tools

Agricultural & Construction Machinery
Agricultural Equipment	Engine Starters, Harvesters, Plow Arms
Construction Machinery	Excavator Booms, Rack Rollers, Cam Mechanisms

Office & Civil Equipment
Office Automation	ATM Machines, Fishing Reels, Paper Feeders
General Civil Use	Motorcycle Drive Shafts, Small Home Appliances, Medical Devices