Part Number

d - Bore

D - Outer Diameter

B - Width

D/W R4 6.35 mm 15.875 mm 4.978 mm
D/W R188-2Z 6.35 mm 12.7 mm 4.762 mm
D/W R4-2Z 6.35 mm 15.875 mm 4.978 mm
D/W R188 R 6.35 mm 12.7 mm 3.175 mm
D/W R4 R-2Z 6.35 mm 15.875 mm 4.978 mm
D/W RW4 6.35 mm 15.875 mm 5.77 mm
D/W R168-2ZS 6.35 mm 9.525 mm 3.175 mm
D/W R168 6.35 mm 9.525 mm 3.175 mm
D/W RW168-2ZS 6.35 mm 9.525 mm 3.967 mm
D/W R188 6.35 mm 12.7 mm 3.175 mm
D/W R4-2RZ 6.35 mm 15.875 mm 4.978 mm
D/W R188 R-2Z 6.35 mm 12.7 mm 4.762 mm
D/W RW168 R 6.35 mm 9.525 mm 3.967 mm
D/W R4A-2RZ 6.35 mm 19.05 mm 7.142 mm
D/W R4 R-2RZ 6.35 mm 15.875 mm 4.978 mm
WBB1-8707 R-2Z 7 mm 13 mm 4 mm
W 619/7 7 mm 17 mm 5 mm
W 637-2RZ 7 mm 26 mm 9 mm
W 627-2RS1 7 mm 22 mm 7 mm
618/7 7 mm 14 mm 3.5 mm