EWC & 1WC Series One-Way Needle-Roller Bearing Clutches

The miniature one-way clutch consists of drawn cup, rollers, cage, and springs.

The drawn cup, made of carburized steel sheet, has a unique structure: a protruding portion, which serves as a stopper of rotation on the outside surface at O.D. side, and a cam on the outer ring at bore side are provided.

Product Number Seal Type Bore Dia
(d)
Outer Dia
(D1)
Outer Dia
(D2)
Width
(B)
Torque Capacity Weight
(g)
EWC0406A Open 4 mm 8 mm 8.4 mm 6 mm 0.08 1
EWC0406C Open 4 mm 8 mm 8.4 mm 6 mm 0.15 1
1WC0608 Open 6 mm 10 mm 10.4 mm 8 mm 0.44 2
1WC0612 Open 6 mm 10 mm 10.4 mm 12 mm 0.88 3
EWC0606XC Open 6 mm 10 mm 10.4 mm 6 mm 0.19 1.4
EWC0608A Open 6 mm 10 mm 10.4 mm 8 mm 0.25 1.7
EWC0608C Open 6 mm 10 mm 10.4 mm 8 mm 0.44 1.7
EWC0608XA Open 6 mm 10 mm 10.4 mm 7.5 mm 0.25 1.7
EWC0608XC Open 6 mm 10 mm 10.4 mm 7.5 mm 0.44 1.7
EWC0809A Open 8 mm 12 mm 12.4 mm 9 mm 0.49 2.4
EWC0809C Open 8 mm 12 mm 12.4 mm 9 mm 0.88 2.4
1WC0812 Open 8 mm 14.2 mm 15 mm 12 mm 1.96 7
1WC0815 Open 8 mm 14.2 mm 15 mm 14.5 mm 2.65 8
EWC0812A Open 8 mm 14.2 mm 15 mm 12 mm 1.18 5.8
EWC0812C Open 8 mm 14.2 mm 15 mm 12 mm 1.96 5.8
1WC1012 Open 10 mm 16 mm 17 mm 12 mm 2.35 8
EWC1010A Open 10 mm 16 mm 17 mm 10 mm 1.18 6
EWC1010C Open 10 mm 16 mm 17 mm 10 mm 1.96 6
EWC1012A Open 10 mm 16 mm 17 mm 12 mm 1.37 6.8
EWC1012C Open 10 mm 16 mm 17 mm 12 mm 2.35 6.8
1WC1216 Open 12 mm 18 mm 19 mm 16 mm 6.28 12

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