2015 Designer's Notebook - 127

B-50 Dimensions & Specifications

Dimensions (millimeters in shaded area)
E

F

G

H

L

O

P

R

AA

AC

-

2.90

0.48

0.79

1.75

-

1.7505

-

0.88

-

B-50A 11.00 4.00 10.88 5/16-18 5.21

2.91

0.27

1.03

1.97 16.83 1.7505 5.97

0.88

2.69

B-50

73.7

12.3

20.2

44.5

22.2

-

B-50A 279.4 101.6 276.2 5/16-18 132.2 73.8

6.8

26.1

50.1 427.4 44.46 151.6 22.2

B-50

A

B

C

D

10.00 3.50 10.06 5/16-18

254.0 89.0 254.0 5/16-18

-

-

44.46

-

68.4

AE1 AE2
1.22

-

Z

Keyway

Set Screws

10.25 3/8 X 3/16 (2) 3/8-16

1.22 16.18 10.25 3/8 X 3/16 (2) 3/8-16
31.0

260.4 9.5 X 4.8

(2) 3/8-16

31.0 411.0 260.4 9.5 X 4.8

-

(2) 3/8-16

Specifications (metric in shaded area)

Model

Rated
Torque
(lb-ft)
(Nm)

Heat Dissipation
at 1800 rpm
of Outer Member
Watts

hp

Non
Excited
Drag Torque
(lb-ft)
(Nm)

Inertia (WR2) of
Outer Rotating
Member
(lb-ft2)
(kg-m2)

WT
(lb)
(kg)

Coil Data
(90 VDC)

Time Constants
(Seconds)

Rated
Current

Ω@
20˚C

Current

Torque

B-50

50

302

0.40

0.70

0.40

54.0

0.17

356

0.38

0.60

B-50A

50

825

1.11

0.70

0.40

63.0

0.17

356

0.38

0.60

B-50

67.8

302

0.40

0.90

0.0168

24.0

0.17

356

0.38

0.60

B-50A

67.8

825

1.11

0.90

0.0168

29.0

0.17

356

0.38

0.60

Time constants are the time in seconds for current or torque to reach 63% of the final value after step function voltage is applied. "Rated current" is
the current which will occur from a 90 VDC input to the clutch when the unit is operated at its rated temperature (maximum heat dissipation). Non
excited drag torque and torque time constant measured at 1800 rpm. Axis of shafts must lie within 30˚ of horizontal. Brake mounting should be
'floating' type, to prevent overloading bearings. Fan power requirements are 115 VAC, 60 Hz, 1.37 amp. Non-excited drag torque values represent a
typical unit after a few minutes of use. Drag torque in a new, unused unit may initially be higher.

Magnetic Particle Clutches & Brakes

127

Magnetic Particle Clutches & Brakes

Model



Table of Contents for the Digital Edition of 2015 Designer's Notebook

Table of Contents
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2015 Designer's Notebook - Table of Contents
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2015 Designer's Notebook - Cover3
2015 Designer's Notebook - Cover4
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