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Product Series of Automation-Related Precision Ball Screws and Linear Rails – High-Precision Ball Screws
NSKBearingsCylindrical Roller BearingsNF309W
Product Overview
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Cylindrical Roller Bearings/Bearings

NF309W

Cylindrical Roller Bearing

NSK Distributor Taiwan

Product Features

  • Line contact between rollers and raceways gives high radial load capacity and low friction, suitable for high-speed, heavy-load transmission
  • Available in N/NU/NJ/NUP flange configurations — some types locate axial position in one direction, others allow the inner ring to float axially relative to the outer ring
  • Commonly used in motors, gearboxes, rolling mills and machine tool spindles requiring high rigidity and high speed
  • Nahshon is NSK's distributor in Taiwan — add the part number to your inquiry list and we will confirm the current spec and quote with the factory

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Product Description

This category covers NSK cylindrical roller bearings. The line-contact roller/raceway design gives high radial load capacity and low friction, suitable for high-speed, heavy-load transmission. Available in N/NU/NJ/NUP flange configurations: some types provide axial location in one direction, while others allow the inner ring to float axially relative to the outer ring, serving as the floating support end of a drive shaft. Commonly used in motors, gearboxes, rolling mills and machine tool spindles requiring high rigidity and high speed.

For current spec and catalog cross-reference, please inquire: Nahshon is NSK's distributor in Taiwan with full part-number lookup and sourcing support — add the part number to your inquiry list and we will confirm the current code, spec and quote with the factory; sourcing support is also available for discontinued models.

FAQ
What's the difference between the Z, ZZ and DDU suffixes?
Z means a single-side steel shield, ZZ means steel shields on both sides, and DDU means contact rubber seals on both sides. Shields suit general environments and high speeds; rubber seals give better dust and water protection with slightly higher friction torque — choose based on your dust exposure and lubrication method.
When should I choose C3 clearance instead of standard clearance?
For motors or other applications with noticeable temperature rise, or high-speed operation, the inner ring expands from heat and reduces the clearance — choose C3 in that case. Standard clearance is fine for general room-temperature, low-speed use. See Nahshon's technical resources for a clearance selection guide.
Is NF309W in stock in Taiwan? What is the lead time?
Nahshon is the NSK distributor in Taiwan and keeps stock of some commonly used items. Add NF309W to your inquiry list or give us a call, and we'll confirm stock, lead time and quote.
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