Bearing 20312 K SIGMA -

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Bearing 20312 K SIGMA image

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Bearing 20312 K SIGMA Product identifiers

Bearing number:7218 ACD/HCP4A
Size (mm):160x90x30
Bore Diameter (mm):160
Outer Diameter (mm):90
Width (mm):30
d:90 mm
D:160 mm
B:30 mm
d1:111.6 mm
d2:111.6 mm
D1:138.4 mm
r1,2 - min.:2 mm
r3,4 - min.:1 mm
a:44.3 mm
da - min.:101 mm
db - min.:101 mm
Da - max.:149 mm
Db - max.:154.4 mm
ra - max.:2 mm
rb - max.:1 mm
dn:117.5 mm
Basic dynamic load rating - C:121 kN
Basic static load rating - C0:106 kN
Fatigue load limit - Pu:4 kN
Limiting speed for grease lubrication:9000 r/min
Limiting speed for oil lubrication:15000 mm/min
Ball - Dw:22.225 mm
Ball - z:16
Gref:27.765 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:750 N
Preload class B - GB:1500 N
Preload class C - GC:3000 N
Preload class D - GD:6000 N
Calculation factor - f:1.09
Calculation factor - f1:0.99
Calculation factor - f2A:1
Calculation factor - f2B:1.01
Calculation factor - f2C:1.03
Calculation factor - f2D:1.06
Calculation factor - fHC:1.01
Preload class A:303 N/micron
Preload class B:395 N/micron
Preload class C:521 N/micron
Preload class D:702 N/micron
Category:Precision Ball Bearings
Inventory:0.0
Minimum Buy Quantity:N/A
Weight / Kilogram:1.902
Product Group:B04270
Enclosure:Open
Precision Class:ABEC 7 | ISO P4
Material - Ball:Ceramic
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 | Hybrid | Corrosion Resistant Ball
Long Description:90MM Bore; 160MM Outside Diameter; 30MM Width; Open Enclosure; ABEC 7 | ISO P4 Precision; Ceramic Ball Material; 1 (Single) Bearings; 25 Degree Contact Angle; Phenolic Cage Material; 1 Rib Outer Ring
UNSPSC:31171531
Harmonized Tariff Code:8482.10.50.28
Noun:Bearing
Keyword String:Angular Contact Ball
Manufacturer Item Number:7218 ACD/HCP4A
Weight / LBS:4.189
Bore:3.543 Inch | 90 Millimeter
Width:1.181 Inch | 30 Millimeter
Outside Diameter:6.299 Inch | 160 Millimeter
r1,2 min.:2 mm
r3,4 min.:1 mm
da min.:101 mm
db min.:101 mm
Da max.:149 mm
Db max.:154.4 mm
ra max.:2 mm
rb max.:1 mm
Basic dynamic load rating C:121 kN
Basic static load rating C0:106 kN
Fatigue load limit Pu:4.05 kN
Attainable speed for grease lubrication:9000 r/min
Attainable speed for oil-air lubrication:15000 r/min
Ball diameter Dw:22.225 mm
Number of balls z:16
Reference grease quantity Gref:27.765 cm³
Preload class A GA:750 N
Static axial stiffness, preload class A:303 N/µm
Preload class B GB:1500 N
Static axial stiffness, preload class B:395 N/µm
Preload class C GC:3000 N
Static axial stiffness, preload class C:521 N/µm
Preload class D GD:6000 N
Static axial stiffness, preload class D:702 N/µm
Calculation factor f:1.09
Calculation factor f1:0.99
Calculation factor f2A:1
Calculation factor f2B:1.01
Calculation factor f2C:1.03
Calculation factor f2D:1.06
Calculation factor fHC:1.01
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:1.83 kg

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