ISO 9001 Sourced SAE 52100 Chrome Steel

Needle Roller Bearings

Thin cylindrical rollers providing maximum load capacity in minimal radial space for automotive, hydraulic pump, and compact gearbox applications.

Needle Roller Bearings
Standard & Custom Sizes Supplied
Speed Boundary Up to 24,000 RPM
Load Capacity High Radial Space-Saving
Protection Drawn Cup / Solid Ring
Fit & Clearance Inner Ring Optional
Engineering Data Sheet

Technical Specifications & Sizing Chart

Standard metric dimensional chart and load parameters. Filter by model, bore (d), outer diameter (D), or width (B).

Bearing Model Bore (d) Outer Dia (D) Width (C) Dynamic Load (Cr) Static Load (Cor) Limiting Speed (Grease) Needle Roller Length
HK 0608 6 mm 10 mm 8 mm 2.85 kN 2.75 kN 36,000 RPM 6.2 mm precision roller
HK 0808 8 mm 12 mm 8 mm 3.45 kN 3.65 kN 30,000 RPM 6.2 mm precision roller
HK 0810 8 mm 12 mm 10 mm 4.30 kN 4.80 kN 30,000 RPM 8.2 mm precision roller
HK 1010 10 mm 14 mm 10 mm 4.95 kN 5.85 kN 25,000 RPM 8.2 mm precision roller
HK 1012 10 mm 14 mm 12 mm 6.10 kN 7.65 kN 25,000 RPM 10.2 mm precision roller
HK 1210 12 mm 16 mm 10 mm 5.60 kN 7.10 kN 22,000 RPM 8.2 mm precision roller
HK 1212 12 mm 18 mm 12 mm 8.10 kN 9.60 kN 22,000 RPM 9.8 mm precision roller
HK 1512 15 mm 21 mm 12 mm 9.80 kN 12.8 kN 18,000 RPM 9.8 mm precision roller
HK 1516 15 mm 21 mm 16 mm 13.2 kN 18.3 kN 18,000 RPM 13.8 mm precision roller
HK 1612 16 mm 22 mm 12 mm 10.2 kN 13.7 kN 17,000 RPM 9.8 mm precision roller
HK 1616 16 mm 22 mm 16 mm 14.0 kN 20.4 kN 17,000 RPM 13.8 mm precision roller
HK 1812 18 mm 24 mm 12 mm 11.0 kN 15.6 kN 15,000 RPM 9.8 mm precision roller
HK 2016 20 mm 26 mm 16 mm 15.8 kN 25.0 kN 14,000 RPM 13.8 mm precision roller
HK 2020 20 mm 26 mm 20 mm 19.8 kN 33.0 kN 14,000 RPM 17.8 mm precision roller
HK 2216 22 mm 28 mm 16 mm 16.8 kN 27.5 kN 12,000 RPM 13.8 mm precision roller
HK 2516 25 mm 32 mm 16 mm 18.5 kN 32.0 kN 11,000 RPM 13.8 mm precision roller
HK 2520 25 mm 32 mm 20 mm 23.6 kN 43.0 kN 11,000 RPM 17.8 mm precision roller
HK 3016 30 mm 37 mm 16 mm 20.5 kN 38.5 kN 9,000 RPM 13.8 mm precision roller
HK 3020 30 mm 37 mm 20 mm 26.5 kN 52.0 kN 9,000 RPM 17.8 mm precision roller
HK 3520 35 mm 42 mm 20 mm 29.0 kN 61.0 kN 8,000 RPM 17.8 mm precision roller
HK 4020 40 mm 47 mm 20 mm 31.5 kN 71.0 kN 7,000 RPM 17.8 mm precision roller
HK 5025 50 mm 58 mm 25 mm 45.0 kN 108 kN 5,500 RPM 22.5 mm precision roller
NA 4900 10 mm 22 mm 13 mm 8.80 kN 9.80 kN 28,000 RPM Solid outer ring with ribs
NA 4901 12 mm 24 mm 13 mm 9.80 kN 11.6 kN 26,000 RPM Solid outer ring with ribs
NA 4902 15 mm 28 mm 13 mm 11.2 kN 14.3 kN 22,000 RPM Solid outer ring with ribs
NA 4903 17 mm 30 mm 13 mm 12.0 kN 16.0 kN 20,000 RPM Solid outer ring with ribs
NA 4904 20 mm 37 mm 17 mm 21.6 kN 28.0 kN 17,000 RPM Solid outer ring with ribs
NA 4905 25 mm 42 mm 17 mm 24.5 kN 35.0 kN 14,000 RPM Solid outer ring with ribs
NA 4906 30 mm 47 mm 17 mm 26.5 kN 41.0 kN 12,000 RPM Solid outer ring with ribs
NA 4907 35 mm 55 mm 20 mm 38.0 kN 59.0 kN 10,000 RPM Solid outer ring with ribs
NA 4908 40 mm 62 mm 22 mm 47.5 kN 76.5 kN 9,000 RPM Solid outer ring with ribs
NA 4909 45 mm 68 mm 22 mm 51.0 kN 86.5 kN 8,000 RPM Solid outer ring with ribs
NA 4910 50 mm 72 mm 22 mm 54.0 kN 96.5 kN 7,500 RPM Solid outer ring with ribs
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Compact Power for Tight Radial Envelope Applications

Needle Roller Bearings utilize long, thin cylindrical rollers whose length is 3 to 10 times their diameter, delivering ultra-compact radial profiles with remarkable radial load ratings.

Available as drawn cup needle roller bearings, heavy-duty machined ring bearings, and cage/needle roller assemblies.

Needle Roller Bearings Category
Engineering Insights

Bearing Nomenclature & Clearance Guide

Understanding technical suffixes, clearance prefixes, and material ratings used in industrial procurement.

Suffix & Prefix Reference

  • 2RS / DDU: Double lip synthetic NBR rubber seals for moisture & dust exclusion.
  • ZZ / 2Z: Double pressed-steel non-contact shields for grease retention at high speeds.
  • K / N: Tapered bore (K) or snap ring groove (N) for specific mounting configurations.
  • M / Y: Machined brass cage (M) or pressed steel cage (Y) for heavy industrial loads.

Radial Internal Clearance (RIC)

  • C2 (Tight): Less than normal clearance. Used for high-precision shafts to minimize vibration.
  • CN (Normal): Standard fit for general industrial applications under normal temperatures.
  • C3 (Loose): Greater than normal clearance. Compensates for thermal expansion in electric motors.
  • C4 / C5: Massive internal space for kilns and gearboxes running at extreme temperatures.
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