638 ball bearing

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Part Number 638
Bearing type BALL
Structure Single Row
Load Direction Radial
Seal type Open
Bore diameter(d) 8mm
Outer diameter(D) 28mm
Width(B) 9 mm
material Chrome steel 52100(Gcr15)
ring material Chrome steel 52100(Gcr15)
cage material 300 Series Stainless Steel
ball material Chrome steel 52100(Gcr15)
shields material 300 Series Stainless Steel
Grade ABEC-1(higher grade available)
Clearance C0(other clearance available)
BALL SIZE(mm) 4.762 mm
BALL QTY 7
lubrication grease(oil available)
Temperature Range -30℃~130℃
weight(g) 28.10
ISO9001:2015 PASSED
REACH PASSED
ROHS PASSED
Dynamic Load Rating (Cr) 3879 N
Static Load Rating (Cor) 1586 N
638 ball bearing d

BEARING INTERCHANGE

RUNSTAR NMB NTN ADR GRW EZO TIMKEN
638 638
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