One-Way Needle-Roller Bearing Clutches

Drawn cup needle roller clutches have a smallest radial section height among all clutches. This makes optimum use of the available space and allows compact designs. These clutches are suitable for transmitting high torque. They are normally used for converters, non-return devices and transcendental clutches. HF series is composed of thin-walled drawn outer ring and plastic cage. There are a series of ramps on its inside diameter and steel springs in the plastic cage. Needle rollers, which are retained and guided by a plastic cage, form the clamping elements. HFL series has two integral radial bearings arranged on both sides of needle roller clutch. They can therefore support radial forces in particularly space-saving bearing arrangements.

HF & HFL Series One-Way Needle-Roller Bearing Clutches




The needles in these bearings roll freely in one direction, but lock to transmit torque when the rotation of the shaft is reversed. Also known as drawn-cup roller clutches. An arrow on the lip indicates the rotational direction that locks the bearings.

Single-row bearings do not support loads from any direction. To support radial loads, use with our Needle-Roller Bearings.

Triple-row bearings support radial loads.

Product Number Seal Type Bore Dia (d) Outer Dia (D) Width (B) Md per nGW nGA
HF0306-KF Open 3 mm 6,5 mm 6 mm 0,18 Nm 45000 1/min 8000 1/min
HF0306-KF-R Open 3 mm 6,5 mm 6 mm 0,06 Nm 45000 1/min 8000 1/min
HFL0308-KF Open 3 mm 6,5 mm 8 mm 0,18 Nm 45000 1/min 8000 1/min
HFL0308-KF-R Open 3 mm 6,5 mm 8 mm 0,06 Nm 45000 1/min 8000 1/min
HF0406-KF Open 4 mm 8 mm 6 mm 0,34 Nm 34000 1/min 8000 1/min
HF0406-KF-R Open 4 mm 8 mm 6 mm 0,1 Nm 34000 1/min 8000 1/min
HFL0408-KF Open 4 mm 8 mm 8 mm 0,34 Nm 34000 1/min 8000 1/min
HFL0408-KF-R Open 4 mm 8 mm 8 mm 0,1 Nm 34000 1/min 8000 1/min
HF0612 Open 6 mm 10 mm 12 mm 1,76 Nm 23000 1/min 13000 1/min
HF0612-KF Open 6 mm 10 mm 12 mm 1,76 Nm 23000 1/min 13000 1/min
HF0612-KF-R Open 6 mm 10 mm 12 mm 0,6 Nm 23000 1/min 13000 1/min
HF0612-R Open 6 mm 10 mm 12 mm 0,6 Nm 23000 1/min 13000 1/min
HFL0606-KF-R Open 6 mm 10 mm 6 mm 0,5 Nm 23000 1/min 13000 1/min
HFL0615 Open 6 mm 10 mm 15 mm 1,76 Nm 23000 1/min 13000 1/min
HFL0615-KF Open 6 mm 10 mm 15 mm 1,76 Nm 23000 1/min 13000 1/min
HFL0615-KF-R Open 6 mm 10 mm 15 mm 0,6 Nm 23000 1/min 13000 1/min
HFL0615-R Open 6 mm 10 mm 15 mm 0,5 Nm 23000 1/min 13000 1/min
HF0812 Open 8 mm 12 mm 12 mm 3,15 Nm 17000 1/min 12000 1/min
HF0812-KF Open 8 mm 12 mm 12 mm 3,15 Nm 17000 1/min 12000 1/min
HF0812-KF-R Open 8 mm 12 mm 12 mm 1 Nm 17000 1/min 12000 1/min
HF0812-R Open 8 mm 12 mm 12 mm 1 Nm 17000 1/min 12000 1/min
HFL0806-KF-R Open 8 mm 12 mm 6 mm 0,7 Nm 17000 1/min 12000 1/min
HFL0822 Open 8 mm 12 mm 22 mm 3,15 Nm 17000 1/min 12000 1/min
HFL0822-KF Open 8 mm 12 mm 22 mm 3,15 Nm 17000 1/min 12000 1/min
HFL0822-KF-R Open 8 mm 12 mm 22 mm 1 Nm 17000 1/min 12000 1/min
HFL0822-R Open 8 mm 12 mm 22 mm 1 Nm 17000 1/min 12000 1/min
HF1012 Open 10 mm 14 mm 12 mm 5,3 Nm 14000 1/min 11000 1/min
HF1012-KF Open 10 mm 14 mm 12 mm 5,3 Nm 14000 1/min 11000 1/min
HFL1022 Open 10 mm 14 mm 22 mm 5,3 Nm 14000 1/min 11000 1/min
HF1216 Open 12 mm 18 mm 16 mm 12,2 Nm 11000 1/min 8000 1/min
HFL1226 Open 12 mm 18 mm 26 mm 12,2 Nm 11000 1/min 8000 1/min
HF1416 Open 14 mm 20 mm 16 mm 17,3 Nm 9500 1/min 8000 1/min
HFL1426 Open 14 mm 20 mm 26 mm 17,3 Nm 9500 1/min 8000 1/min
HF1616 Open 16 mm 22 mm 16 mm 20,5 Nm 8500 1/min 7500 1/min
HFL1626 Open 16 mm 22 mm 26 mm 20,5 Nm 8500 1/min 7500 1/min
HF1816 Open 18 mm 24 mm 16 mm 24,1 Nm 7500 1/min 7500 1/min
HFL1826 Open 18 mm 24 mm 26 mm 24,1 Nm 7500 1/min 7500 1/min
HF2016 Open 20 mm 26 mm 16 mm 28,5 Nm 7000 1/min 6500 1/min
HFL2026 Open 20 mm 26 mm 26 mm 28,5 Nm 7000 1/min 6500 1/min
HF2520 Open 25 mm 32 mm 20 mm 66 Nm 5500 1/min 5500 1/min
HFL2530 Open 25 mm 32 mm 30 mm 66 Nm 5500 1/min 5500 1/min
HF3020 Open 30 mm 37 mm 20 mm 90 Nm 4500 1/min 4500 1/min
HFL3030 Open 30 mm 37 mm 30 mm 90 Nm 4500 1/min 4500 1/min
HF3520 Open 35 mm 42 mm 20 mm 121 Nm 3900 1/min 3900 1/min
HFL3530 Open 35 mm 42 mm 30 mm 121 Nm 3900 1/min 3900 1/min

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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