220 mm x 300 mm x 38 mm Gref KOYO K28X41X25H Needle Roller Bearings

The online 220 mm x 300 mm x 38 mm Gref KOYO K28X41X25H Needle Roller Bearings parts store gives you immediate SKF Brand access to 71944 ACD/P4A Bearing number a selection of more than 1.4 million new, used, remanufactured.

Bearing number 71944 ACD/P4A
Size (mm) 300x220x38
Brand SKF
Bore Diameter (mm) 300
Outer Diameter (mm) 220
Width (mm) 38
d 220 mm
D 300 mm
B 38 mm
d1 244.7 mm
d2 244.7 mm
D1 275.3 mm
r1,2 - min. 2.1 mm
r3,4 - min. 1 mm
a 79.9 mm
da - min. 231 mm
db - min. 231 mm
Da - max. 289 mm
Db - max. 295 mm
ra - max. 2 mm
rb - max. 1 mm
dn 251.4 mm
Basic dynamic load rating - C 208 kN
Basic static load rating - C0 285 kN
Fatigue load limit - Pu 7.5 kN
Limiting speed for grease lubrication 3800 r/min
Limiting speed for oil lubrication 5600 mm/min
Ball - Dw 25.4 mm
Ball - z 29
Gref 84 cm3
Calculation factor - e 0.68
Calculation factor - Y2 1.41
Calculation factor - Y0 0.76
Calculation factor - X2 0.67
Calculation factor - Y1 0.92
Preload class A - GA 1300 N
Preload class B - GB 2600 N
Preload class C - GC 5200 N
Preload class D - GD 10400 N
Calculation factor - f 1.28
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
Preload class A 533 N/micron
Preload class B 699 N/micron
Preload class C 934 N/micron
Preload class D 1275 N/micron
Category Precision Ball Bearings
Inventory 0.0
Manufacturer Name SKF
Minimum Buy Quantity N/A
Weight / Kilogram 7.59
Product Group B04270
Enclosure Open
Precision Class ABEC 7 | ISO P4
Material - Ball Steel
Number of Bearings 1 (Single)
Contact Angle 25 Degree
Preload None
Raceway Style 1 Rib Outer Ring
Cage Material Phenolic
Rolling Element Ball Bearing
Flush Ground No
Inch - Metric Metric
Other Features Single Row | Angular Contact |
Long Description 220MM Bore; 300MM Outside Diam
UNSPSC 31171531
Harmonized Tariff Code 8482.10.50.28
Noun Bearing
Keyword String Angular Contact Ball
Manufacturer Item Number 71944 ACD/P4A
Weight / LBS 16.711
Width 1.496 Inch | 38 Millimeter
Outside Diameter 11.811 Inch | 300 Millimeter
Bore 8.661 Inch | 220 Millimeter
r1,2 min. 2.1 mm
r3,4 min. 1 mm
da min. 231 mm
db min. 231 mm
Da max. 289 mm
Db max. 295 mm
ra max. 2 mm
rb max. 1 mm
Basic dynamic load rating C 208 kN
Basic static load rating C0 285 kN
Fatigue load limit Pu 7.5 kN
Attainable speed for grease lubrication 3800 r/min
Attainable speed for oil-air lubrication 5600 r/min
Ball diameter Dw 25.4 mm
Number of balls z 29
Reference grease quantity Gref 84 cm³
Preload class A GA 1300 N
Static axial stiffness, preload class A 533 N/µm
Preload class B GB 2600 N
Static axial stiffness, preload class B 699 N/µm
Preload class C GC 5200 N
Static axial stiffness, preload class C 934 N/µm
Preload class D GD 10400 N
Static axial stiffness, preload class D 1275 N/µm
Calculation factor f 1.28
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 (single, tandem) Y0 0.38
Calculation factor (single, tandem) X2 0.41
Calculation factor (back-to-back, face-to-face) Y1 0.92
Calculation factor (back-to-back, face-to-face) Y2 1.41
Calculation factor (back-to-back, face-to-face) Y0 0.76
Calculation factor (back-to-back, face-to-face) X2 0.67
Mass bearing 6.6 kg

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