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NTN NK42/20R needle roller bearings - Industrial Bearing

  NTN NK42/20R needle roller bearings

NTN NK42/20R needle roller bearings pdf

With over 10170 full-service stores, 12 mm B our NTN NK42/20R needle roller bearings inventory is extensive and our parts are 50 mm d priced right. within 24 hours. This helps 72 mm D you maximize your productivity by saving time and your hard-earned dollars.

d 50 mm
D 72 mm
B 12 mm
d1 57.1 mm
d2 57.1 mm
D2 67.12 mm
r1,2 min. 0.6 mm
r3,4 min. 0.3 mm
a 20.3 mm
da min. 53.2 mm
da max. 56.6 mm
db min. 53.2 mm
db max. 56.6 mm
Da max. 68.8 mm
Db max. 70.6 mm
ra max. 0.6 mm
rb max. 0.3 mm
Basic dynamic load rating C 12.7 kN
Basic static load rating C0 9.8 kN
Fatigue load limit Pu 0.415 kN
Attainable speed for grease lubrication 16000 r/min
Ball diameter Dw 6.35 mm
Number of balls z 25
Preload class A GA 80 N
Static axial stiffness, preload class A 105 N/µm
Preload class B GB 160 N
Static axial stiffness, preload class B 137 N/µm
Preload class C GC 320 N
Static axial stiffness, preload class C 180 N/µm
Preload class D GD 640 N
Static axial stiffness, preload class D 240 N/µm
Calculation factor f 1.13
Calculation factor f1 0.98
Calculation factor f2A 1
Calculation factor f2B 1.04
Calculation factor f2C 1.08
Calculation factor f2D 1.14
Calculation factor fHC 1
Calculation factor e 0.68
Calculation factor (single, tandem) Y2 0.87
Calculation factor (back-to-back, face-to-face) Y1 0.92
Calculation factor (back-to-back, face-to-face) Y2 1.41
Mass bearing 0.14 kg

      Detailed Parameters

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