Machined Needle Roller Bearing

Machined needle roller bearing is a type of rolling-element bearing designed to handle high radial loads in compact spaces. It uses long, thin cylindrical rollers (“needles”) with a length-to-diameter ratio of about 4:1 to 10:1, enabling them to support heavy loads while minimizing space requirements.

ZMS supply very full series machined needle roller bearings in China for 15 years.Machined needle roller bearings can be full complement without cage, with or without inner ring, and single row or double rows.Needle roller bearings with ribs come in single or double-row designs, with options for open or sealed units.Metric and Inch series also are available.

Main series are following: NK NKI series, NKS and NKIS series, NA48 and RNA48 series, NA49 and RNA49 series, NA59 and RNA59 series, NA69 and RNA69 series, NAV49 series.

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Key Feature

High Load Capacity: Handle heavy radial loads due to the large number of needle rollers in contact with the raceways.
Compact Design: Their thin profile allows them to be used in space-constrained applications.
Low Friction: The design enables smooth operation, which is beneficial for high-speed applications.
Durability: Typically made from high-quality steel, these bearings are engineered for long service life.

Applications

Automotive: They are heavily used in components such as rocker arm pivots, pumps, compressors, and transmissions. For instance, the drive shaft of a rear-wheel drive vehicle typically includes at least eight needle bearings, with four in each U joint, and more for longer vehicles or those on steep slopes.
Industrial Machinery: Found in conveyors, pumps, printing presses, and machine tools, where their high rigidity and precision are critical for operational efficiency.
Aerospace: Utilized in actuators and landing gear systems, where reliability under extreme conditions is paramount.
Robotics and Office Equipment: Employed in joints, rotary axes, and devices like photocopiers and fax machines, benefiting from their compact size and high load capacity.

Customization and Stocking

Stocking: We have very full series modals stocking in the warehouse can be fast delivery and MOQ can be very low.
Customization:When standard modals can’t fit well your requirements, we can custom made by your requirements. You can detail discuss with our technician. Normally there will have certain quantity for production.