Bearing NU2340 M AST -

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NACHI PZS Series Hydraulic Piston Pumps Origin Japan

NACHI PZE Series Hydraulic Piston Pumps Origin Japan

Komastu Gear Pump Origin Japan

Home>Products>Cylindrical Roller Bearings Distributior>Bearing NU2340 M AST image

Bearing NU2340 M AST image

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Bearing NU2340 M AST Product identifiers

Bearing number:71910 CB/P4A
Size (mm):72x50x12
Bore Diameter (mm):72
Outer Diameter (mm):50
Width (mm):12
d:50 mm
D:72 mm
B:12 mm
d1:57.95 mm
d2:56.9 mm
D2:66.04 mm
r1,2 - min.:0.6 mm
r3,4 - min.:0.3 mm
a:16.7 mm
da - min.:53.2 mm
db - min.:53.2 mm
Da - max.:68.8 mm
Db - max.:70 mm
ra - max.:0.6 mm
rb - max.:0.3 mm
dn:58.7 mm
Basic dynamic load rating - C:7.6 kN
Basic static load rating - C0:6.2 kN
Fatigue load limit - Pu:0.265 kN
Limiting speed for grease lubrication:26000 r/min
Limiting speed for oil lubrication:38000 mm/min
Ball - Dw:4.762 mm
Ball - z:29
Gref:1.89 cm3
Calculation factor - f0:9.8
Preload class A - GA:26 N
Preload class B - GB:52 N
Preload class C - GC:155 N
Calculation factor - f:1
Calculation factor - f2A:1
Calculation factor - f2B:1.02
Calculation factor - f2C:1.07
Calculation factor - fHC:1
Preload class A:31 N/micron
Preload class B:40 N/micron
Preload class C:65 N/micron
r1,2 min.:0.6 mm
r3,4 min.:0.3 mm
da min.:53.2 mm
db min.:53.2 mm
Da max.:68.8 mm
Db max.:70 mm
ra max.:0.6 mm
rb max.:0.3 mm
Basic dynamic load rating C:10.4 kN
Basic static load rating C0:10.2 kN
Fatigue load limit Pu:0.265 kN
Attainable speed for grease lubrication:26000 r/min
Attainable speed for oil-air lubrication:38000 r/min
Ball diameter Dw:4.762 mm
Number of balls z:29
Reference grease quantity Gref:1.89 cm³
Preload class A GA:26 N
Static axial stiffness, preload class A:31 N/µm
Preload class B GB:52 N
Static axial stiffness, preload class B:40 N/µm
Preload class C GC:155 N
Static axial stiffness, preload class C:65 N/µm
Calculation factor f:1.09
Calculation factor f1:1
Calculation factor f2A:1
Calculation factor f2B:1.02
Calculation factor f2C:1.07
Calculation factor fHC:1
Calculation factor f0:9.8
Mass bearing:0.13 kg

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