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Bearing SMR74ZZ (AST)
Ball Bearings Miniature - Instrument Series, Stainless Steel - Metric Series SMR74ZZ
Bearing number : SMR74ZZ
Size (mm) : 4x7x2.5
Brand : AST
Bore Diameter (mm) : 4
Outer Diameter (mm) : 7
Width (mm) : 2,5
Bearing dimensions and specification in AST catalogue:
(dimensions in mm)
Bearing Type - Shielded
Bore Dia (d) - 4.0000
Outer Dia (D) - 7.0000
Width (B) - 2.5000
Radius (min) (rs) - 0.100
Dynamic Load Rating (Cr) - 217
Static Load Rating (Cor) - 86
Max Speed (Grease) (X1000 RPM) - 60
Max Speed (Oil) (X1000 RPM) - 67
Max. Shaft Shoulder Dia. Inner (Ui) - 4.8
Min. Housing Shoulder Dia., Outer (Uo) - 6.300
Ball Qty - 11
Ball Dia (Dw) - 0.8000
Weight (g) - 0.33
Precision - A1
Standard Clearance - K25
Material - Martensitic Stainless Steel
Also available in 52100 Chrome Steel
ABEC Grades 1, 3, 5, 7, and 9 are available. Also, the equivalent ISO classes.
Two metal shields = (ZZ), also available with a single metal shield = (Z).
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Bore Dia, mm
Outer Dia, mm:
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