SKF Singapore 1901S Single Row Ball Bearings -

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Bearing number:7211 ACD/P4A
Size (mm):100x55x21
Bore Diameter (mm):100
Outer Diameter (mm):55
Width (mm):21
d:55 mm
D:100 mm
B:21 mm
d1:68.9 mm
d2:68.9 mm
D1:86.1 mm
r1,2 - min.:1.5 mm
r3,4 - min.:0.6 mm
a:28.7 mm
da - min.:64 mm
db - min.:64 mm
Da - max.:91 mm
Db - max.:95.8 mm
ra - max.:1.5 mm
rb - max.:0.6 mm
dn:72.6 mm
Basic dynamic load rating - C:52.7 kN
Basic static load rating - C0:40.5 kN
Fatigue load limit - Pu:1.7 kN
Limiting speed for grease lubrication:13000 r/min
Limiting speed for oil lubrication:20000 mm/min
Ball - Dw:14.288 mm
Ball - z:15
Gref:8.595 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:330 N
Preload class B - GB:660 N
Preload class C - GC:1320 N
Preload class D - GD:2640 N
Calculation factor - f:1.08
Calculation factor - f1:0.99
Calculation factor - f2A:1
Calculation factor - f2B:1.01
Calculation factor - f2C:1.02
Calculation factor - f2D:1.05
Calculation factor - fHC:1
Preload class A:172 N/micron
Preload class B:224 N/micron
Preload class C:296 N/micron
Preload class D:399 N/micron
Category:Precision Ball Bearings
Inventory:0.0
Minimum Buy Quantity:N/A
Weight / Kilogram:0.606
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 | Super Precision | High Capacity Basic Design
Long Description:55MM Bore; 100MM Outside Diameter; 21MM Width; Open Enclosure; ABEC 7 | ISO P4 Precision; Steel Ball Material; 1 (Single) Bearing; 25 Degree Contact Angle; Phenolic Cage Material; 1 Rib Outer Ring Rac
UNSPSC:31171531
Harmonized Tariff Code:8482.10.50.28
Noun:Bearing
Keyword String:Ball Angular Contact
Outside Diameter:3.937 Inch | 100 Millimeter
Width:0.827 Inch | 21 Millimeter
Bore:2.165 Inch | 55 Millimeter
r1,2 min.:1.5 mm
r3,4 min.:0.6 mm
da min.:64 mm
db min.:64 mm
Da max.:91 mm
Db max.:95.8 mm
ra max.:1.5 mm
rb max.:0.6 mm
Basic dynamic load rating C:52.7 kN
Basic static load rating C0:40.5 kN
Fatigue load limit Pu:1.73 kN
Attainable speed for grease lubrication:13000 r/min
Attainable speed for oil-air lubrication:20000 r/min
Ball diameter Dw:14.288 mm
Number of balls z:15
Reference grease quantity Gref:8.595 cm³
Preload class A GA:330 N
Static axial stiffness, preload class A:172 N/µm
Preload class B GB:660 N
Static axial stiffness, preload class B:224 N/µm
Preload class C GC:1320 N
Static axial stiffness, preload class C:296 N/µm
Preload class D GD:2640 N
Static axial stiffness, preload class D:399 N/µm
Calculation factor f:1.08
Calculation factor f1:0.99
Calculation factor f2A:1
Calculation factor f2B:1.01
Calculation factor f2C:1.02
Calculation factor f2D:1.05
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:0.61 kg

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