10 pcs 638-2Z ZZ Deep Groove Ball Bearing Quality 8x28x9 ABEC 18*28*9 638Z 638ZZ free shipping

638-ZZ – 10 PCS
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10 (ten) 638-ZZ quality bearings.
Deep Groove Ball Bearing

Dimension


D (Outside)

28 mm

d (Inside) Bore

8 mm

B (Width)

9 mm

Wgt. g


28.3g per pc

RPM Limit


Grease 28000 rpm

Oil 34000 rpm

Vibration Level

V1- Above standard and less than V2

Shield/Closure codes


2z (Two side metal shields)

Lubrication

Wide Temperature Range: - 20 C to 120 C

ABEC Tolerance Codes


ABEC1