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Electromagnetic Clutches & Electromagnetic Brakes
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DCB Series ClutchesDCB Series Wrap Spring Clutch Brakes

The DCB clutch/brake is designed to start and stop a load. It will stop the load in the same position without any cumulative error. The DCB will stop any load that is able to start. The control tangs are used to hold open the clutch or brake spring, which are wrapped in opposite directions. When the clutch and brake control tangs rotate with the input hub, the input hub and output shaft are engaged by the clutch spring. When the stop collar locks the control tang of the brake spring, it wraps down engaging the output shaft to the brake hub. The clutch spring unwraps at the same time, allowing the input hub to freely rotate.

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DCB Series : Mechanical Specs | Electrical Specs | Typical Response Time | Dimensions
Mechanical
MODEL NO. STATIC TORQUE
(IN.-LBS.)		 MAXIMUM INPUT SPEED MINIMUM* INPUT SPEED ANTI-BACK TORQUE
(IN.-LBS.)
 ANTI-OVERRUN TORQUE
(IN.-LBS.)		 INPUT HUB MAX BEARING LOAD (LBS.)
DCB-2 25 1800 300 18 10 7.5
DCB-4 125 1200 200 80 25 14
DCB-5 250 750 150 160 45 32
DCB-6 500 500 100 300 300 63
DCB-8 2500 300 50 600 600 300
* When operating below minimum speeds, system inertias may have to be increased for proper product performance. Consult factory for application assistance.
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Electrical
MODEL NO. 90 VDC 24 VDC 12 VDC 120 VAC 50/60 HZ
AMPS OHMS AMPS OHMS AMPS OHMS AMPS IN-RUSH AMPS HOLDING OHMS
DCB-2 0.06 1510 0.23 104 0.46 26 0.10 0.05 825
DCB-4 0.10 963 0.32 74 0.73 16.4 0.22 0.10 280
DCB-5 0.10 963 0.32 74 0.73 16.4 0.22 0.10 280
DCB-6 0.15 598 0.60 39.9 1.15 10.4 0.62 0.31 53.5
DCB-8 0.15 598 0.60 39.9 1.15 10.4 0.62 0.31 53.5
DCB-8
Super 		0.24 378 0.94 25.4 1.87 6.43 0.62 0.31 53.5
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Typical Response Time
(Voltage on at Full Speed)
MODEL NO. TIME,
MILLISECONDS
DCB-2 20
DCB-4 24
DCB-5 27
DCB-6 45
DCB-8 50
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  CW rotation shown on all models
Model DCB-2 Models DCB-4, DCB05
Model DCB-6 Model DCB-8
Dimensions
MODEL
NO.		 A B C D E F G H I J (BORE) K L
ENGLISH METRIC ENGLISH METRIC
DCB-2 2.500 0.21 0.09 0.41 0.09 0.16 0.020 1.25 #8 M4 x .7 0.250 10mm 0.375 1.188
DCB-4 3.381 0.33 0.15 0.83 0.09 0.175 0.035 1.25 0.125 Pin Hole and
8-32, 90 Deg Apart		 3mm Pin Hole and
M4 x .7, 90 Deg Apart		 0.375 10mm 0.500 1.249
DCB-5

4.375

 0.46 0.25 1.09 0.09 0.23 0.045 1.56 0.125 Pin Hole and
8-32, 135 Deg Apart		 3mm Pin Hole and
M4 x .7, 135 Deg Apart		 0.5 12mm 0.625 1.561
DCB-6 4.312 0.527 0.22 0.36 0.19 0.22 — 1.25 3/4 Bore 10-32 SS and 3/16 x 3/32 Keyway 20mm Bore M5 x .8 SS and 6 x 2.8 Keyway 3/4 or 1 20mm or 25mm — 2.500
1 Bore .187 Pin Hole
no Keyway		 25mm Bore 5mm Pin Hole no Keyway
DCB-8 6.125 0.698 0.25 — 0.25 — — 1.96 1-1/4 Bore 1/4-20 SS and 5/16 x 5/32 Keyway 35mm Bore M6 x 1 SS and 10 x 3.3 Keyway 1-1/4 or
1-1/2		 35mm or 40mm — 4.000
1-1/2 Bore 1/4-20 SS and 3/8 x 1/8 Keyway
(1 and 1-3/8 Bore available)		 40mm Bore M6 x 1 SS no Keyway

MODEL
NO.		 M N O P Q R S T U V W (INPUT HUB) X Y
ENG. MET. ENGLISH METRIC
DCB-2 0.062 2mm 1.70 2.00 1.00 1.00 3.39 0.710 1.95 .198 x .375
 4-Holes, .187 DIA EQ. SP. ON 2.125 B.C. 3-Holes, 6-32 EQ. SP. ON .938 B.C. 3-Holes, M4 x .7 EQ. SP. ON 23.825 B.C. — 0.600
DCB-4 0.125 3mm 1.96 2.38 1.19 1.00 4.10 0.807 2.56 .260 x .50 4-Holes, .187 DIA EQ. SP. ON 2.125 B.C. 3-Holes, 6-32 EQ. SP. ON .938 B.C. 3-Holes, M4 x .7 EQ. SP. ON 23.825 B.C. — 0.645
DCB-5 0.125 3mm 2.26 2.62 1.31 1.31 4.56 0.910 2.50 .260 x .50 4-Holes, .187 DIA EQ. SP. ON 3.125 B.C. 3-Holes, 10-32 EQ. SP. ON 1.250 B.C. 3-Holes, M5 x .8 EQ. SP. ON 31.750 B.C. — 0.780
DCB-6 — — 2.31 4.25 2.12 2.12 5.75 1.380 2.92 .386 x .80
 4-Holes, .281 DIA EQ. SP. ON 5.00 B.C. 3-Holes, 1/4-20 EQ. SP. ON 2.062 B.C. 3-Holes, M6 x 1 EQ. SP. ON 52.375 B.C. 0.125 1.562
DCB-8 — — 2.31 5.00 2.50 2.50 7.00 1.800 3.118 .386 x .80
 4-Holes, .394 DIA EQ. SP. ON 5.87 B.C. 6-Holes, 5/16-18 EQ. SP. ON 3.375 B.C. 6-Holes, M8 x 1.25 EQ. SP. ON 85.73 B.C. 0.018 2.375
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P.O. Box 1277
Torrington, CT 06790
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Phone: (860) 482-4444
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