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Koyo/JTEKT Machined Type Needle Roller Bearing w/o Inner Ring (NK) - AIMS Industrial Supplies
Koyo/JTEKT Machined Type Needle Roller Bearing w/o Inner Ring (NK) - AIMS Industrial Supplies
Koyo/JTEKT Machined Type Needle Roller Bearing w/o Inner Ring (NK) - AIMS Industrial Supplies
Koyo/JTEKT Machined Type Needle Roller Bearing w/o Inner Ring (NK) - AIMS Industrial Supplies

Koyo/JTEKT NK8/12 Machined Needle Bearing w/o Inner 8x15x12mm

$32.52
$32.52
Inc. GST

Available

Koyo/JTEKT NK8/12. Ground race: drops in to needle bearing assembly. Pairs with drawn-cup or machined needle bearings. Standard sizing matches OEM. Koyo/JTEKT Machined Type Needle Roller Bearing w/o Inner Ring (NK) completes a needle bearing assembly when the shaft is not hardened to race quality.

Type: Needle roller bearing inner ring. Construction: Ground precision race. Pairs with: Drawn-cup or machined needle bearings.

Available Sizes

26 sizes available — select the exact size you need from the dropdown above. Key figures for each:

Inside Diameter (mm) Outside Diameter Basic Load Rating Radial (kn) Cr Basic Load Rating Radial (kn) C0r Limiting Speed Grease Oil Lub.
8 15 mm 4.57 4.89 41000
10 17 mm 5.4 6.43 39000
12 19 mm 6.86 7.6 30000
12 19 mm 6.78 9.03 37000
18 26 mm 13.6 17.7 25000
20 28 mm 14.1 19.1 22000
24 32 mm 16.2 24.3 18000
25 33 mm 16.1 24.4 17000
26 34 mm 16.6 25.7 17000
14 22 mm 14.7 18.4 24000
20 28 mm 17.5 25.3 22000
22 30 mm 18 27 20000
24 32 mm 19.3 30.3 18000
25 33 mm 19.1 30.4 17000
29 38 mm 23.4 36.4 15000
30 40 mm 24.2 38.3 15000
85 105 mm 76.4 137 5000
100 120 mm 83.6 163 4200
28 37 mm 29 53.8 16000
30 40 mm 34.7 61 15000
35 45 mm 37.4 70.6 12000
43 53 mm 41.6 86.6 9900
110 130 mm 103 220 3800
65 78 mm 65.2 144 6500
85 105 mm 108 214 5000
100 120 mm 118 254 4200

Where This Is Used

  • Machined Type Needle Roller Bearings (NA49UU, NA69UU, TAFI, NK, NKS inner ring types, with and without inner ring) provide high radial load capacity in compact axial space for gearboxes, pumps, and precision machinery.
  • General Engineering and Gearboxes Industrial gearbox and machinery machined needle roller bearing supply.
  • Pump, drive, and precision engineering needle bearing replacement.
  • Engineering plant and machinery compact bearing maintenance.
  • Automotive and Transport Vehicle and commercial vehicle drivetrain machined needle bearing supply.
  • Automotive gearbox and powertrain compact bearing replacement.
  • Fleet bearing maintenance and supply.
  • Mining and Heavy Industry Mine plant gearbox and equipment needle bearing supply.
  • Heavy industrial machinery compact high-load bearing replacement.
  • Mining equipment compact bearing maintenance.

Features

  • Features.
  • Thick outer ring provides maximum load capacity and shock resistance with a relatively small radial cross section.
  • Benefits.
  • Optimum speed and lubrication-retention capability.
Full engineering specifications (all 13 fields, 26 sizes)
Inside Diameter (mm) Outside Diameter R Min. (mm) Limiting Speed Grease Oil Lub. Shaft Diameter (mm) Outside Diameter (mm) Basic Load Rating Radial (kn) C0r Limiting Speed Grease Lub. Fatigue Load Limit Cu (kN) Bore Diameter Width Basic Load Rating Radial (kn) Cr Width (mm)
8 15 mm 0.3 41000 8 15 4.89 26000 0.74 8 mm 12 mm 4.57 12
10 17 mm 0.3 39000 10 17 6.43 25000 0.98 10 mm 12 mm 5.4 12
12 19 mm 0.3 30000 12 19 7.6 19000 1.15 12 mm 12 mm 6.86 12
12 19 mm 0.3 37000 12 19 9.03 24000 1.4 12 mm 16 mm 6.78 16
18 26 mm 0.3 25000 18 26 17.7 16000 2.7 18 mm 16 mm 13.6 16
20 28 mm 0.3 22000 20 28 19.1 14000 2.9 20 mm 16 mm 14.1 16
24 32 mm 0.3 18000 24 32 24.3 12000 3.7 24 mm 16 mm 16.2 16
25 33 mm 0.3 17000 25 33 24.4 11000 3.75 25 mm 16 mm 16.1 16
26 34 mm 0.3 17000 26 34 25.7 11000 3.95 26 mm 16 mm 16.6 16
14 22 mm 0.3 24000 14 22 18.4 16000 2.9 14 mm 20 mm 14.7 20
20 28 mm 0.3 22000 20 28 25.3 14000 4 20 mm 20 mm 17.5 20
22 30 mm 0.3 20000 22 30 27 13000 4.3 22 mm 20 mm 18 20
24 32 mm 0.3 18000 24 32 30.3 12000 4.8 24 mm 20 mm 19.3 20
25 33 mm 0.3 17000 25 33 30.4 11000 4.8 25 mm 20 mm 19.1 20
29 38 mm 0.3 15000 29 38 36.4 9800 5.8 29 mm 20 mm 23.4 20
30 40 mm 0.3 15000 30 40 38.3 9500 6.1 30 mm 20 mm 24.2 20
85 105 mm 1 5000 85 105 137 3300 22.2 85 mm 25 mm 76.4 25
100 120 mm 1 4200 100 120 163 2800 25.8 100 mm 26 mm 83.6 26
28 37 mm 0.3 16000 28 37 53.8 10000 8.3 28 mm 30 mm 29 30
30 40 mm 0.3 15000 30 40 61 9500 9.45 30 mm 30 mm 34.7 30
35 45 mm 0.3 12000 35 45 70.6 8000 11 35 mm 30 mm 37.4 30
43 53 mm 0.3 9900 43 53 86.6 6400 13.4 43 mm 30 mm 41.6 30
110 130 mm 1.1 3800 110 130 220 2500 33.6 110 mm 30 mm 103 30
65 78 mm 0.6 6500 65 78 144 4200 22.4 65 mm 35 mm 65.2 35
85 105 mm 1 5000 85 105 214 3300 34.7 85 mm 35 mm 108 35
100 120 mm 1 4200 100 120 254 2800 39.1 100 mm 36 mm 118 36
Product Highlights −
  • Ground race: drops in to needle bearing assembly
  • Pairs with drawn-cup or machined needle bearings
  • Standard sizing matches OEM

Koyo/JTEKT Machined Type Needle Roller Bearing w/o Inner Ring (NK) completes a needle bearing assembly when the shaft is not hardened to race quality.

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Available Options:
  • 15 mm / 12mm bearing
    Model Number: NK8/12/KOYO
  • 17 mm / 12mm bearing
    Model Number: NK10/12/KOYO
  • 19 mm / 12mm bearing
    Model Number: NK12/12/KOYO
  • 19 mm / 16mm bearing
    Model Number: NK12/16/KOYO
  • 26 mm / 16mm bearing
    Model Number: NK18/16/KOYO
  • 28 mm / 16mm bearing
    Model Number: NK20/16/KOYO
  • 32 mm / 16mm bearing
    Model Number: NK24/16/KOYO
  • 33 mm / 16mm bearing
    Model Number: NK25/16/KOYO
  • 34 mm / 16mm bearing
    Model Number: NK26/16/KOYO
  • 22 mm / 20mm bearing
    Model Number: NK14/20/KOYO
  • 28 mm / 20mm bearing
    Model Number: NK20/20/KOYO
  • 30 mm / 20mm bearing
    Model Number: NK22/20/KOYO
  • 32 mm / 20mm bearing
    Model Number: NK24/20/KOYO
  • 33 mm / 20mm bearing
    Model Number: NK25/20/KOYO
  • 38 mm / 20mm bearing
    Model Number: NK29/20/KOYO
  • 40 mm / 20mm bearing
    Model Number: NK30/20/KOYO
  • 105 mm / 25mm bearing
    Model Number: NK85/25/KOYO
  • 120 mm / 26mm bearing
    Model Number: NK100/26/KOYO
  • 37 mm / 30mm bearing
    Model Number: NK28/30/KOYO
  • 40 mm / 30mm bearing
    Model Number: NK30/30/KOYO
  • 45 mm / 30mm bearing
    Model Number: NK35/30/KOYO
  • 53 mm / 30mm bearing
    Model Number: NK43/30/KOYO
  • 130 mm / 30mm bearing
    Model Number: NK110/30/KOYO
  • 78 mm / 35mm bearing
    Model Number: NK65/35/KOYO
  • 105 mm / 35mm bearing
    Model Number: NK85/35/KOYO
  • 120 mm / 36mm bearing
    Model Number: NK100/36/KOYO
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