Stearns Series 310 Catalog Page

Series 310

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Size 2.87

Size 5.0

Size 2.0

Size 4.25

Size 1.79

Size 3.35

• Torque: 10 to 350 lb-in (1.1 to 39.5 Nm)

•

UL Recognized Class H coil insulation system to

US Standards (UR) and Canadian National
Standards (CUR) - File E125303

• Spring activated and DC voltage released

• High torque, Compact size

• Corrosion resistant finishes

• Standard voltages 24 and 90 Vdc
115 and 230 Vac

• Available voltages 12, 36, 48 and 180 Vdc

• Low inertia rotating parts

• Splined hub for quiet dependable operation

• Holding applications only

• Installation and Service Instructions:

P/N 8-078-888-00

Option A, Long Hub

Dimensional Data

Model

Size

Number

310-24010

1.79
310-25010

2.0 310-34010

2.87 310-44010

3.35 310-54010

310-64010

4.25

5.0 310-74010

Mounting Screw

#2

(M2)

#6

(M3)

#8

(M4)

#10

(M5)

1/4

(M6)

1/4

(M6)

ØC

BK F

(41.656)

(44.958)

(63.500)

(73.990)

(95.250)

(114.300)

MaximumD Hub Lengths

Ø1.640

Ø1.770

Ø2.500

Ø2.913

Ø3.750

Ø4.500

5/16

(8mm)

5/16

(8mm)

5/8

(15mm)

5/8

(15mm)

7/8

(22mm)

15/16

(24mm)

.406

(10.31)

.406

(10.31)

.520

(13.21)

.700

(17.78)

.700

(17.78)

.800

(20.32)

E

.560

(14.22)

.425

(10.80)

.625

(15.88)

1.125

(28.58)

1.500

(38.10)

1.750

(44.45)

Hub Location

.914

(23.22)

1.06

(26.92)

.969

(24.62)

.927

(20.55)

1.213

(30.81)

1.336

(33.93)

1.387

(35.23)

G

1.185

(30.10)

1.325

(33.66)

1.190

(30.23)

1.220

(30.99)

1.630

(41.40)

1.752

(44.50)

1.905

(48.39)

H

Overall

1.320

(33.53)

1.470

(37.34)

1.375

(34.93)

1.447

(36.75)

1.913

(48.59)

2.036

(51.7)

2.187

(55.55)

JL Mounting Screw

thru Mag. Body

1.79

(45.47)

2.00

(50.80)

2.87

(72.89)

3.35

(85.09)

4.25

(107.95)

5.00

(127.00)

.354

(9)

.845

(21.5)

.750
(19)

1.086
(27.6)

1.085
(27.6)

1.062
(27)

67

Series 310 Continued

Engineering Specifications

Size Part Number

310-24010-XX-XX 10 1.13

1.79
310-25010-XX-XX 13 1.47

2.0 310-34010-XX-XX 18 2.03 Holding .7 .32 17 1.6150E-05 1.8582E-05

2.87 310-44010-XX-XX 40 4.52 Holding 1.5 .68 17 1.1150E-04 1.2829E-04

3.35 310-54010-XX-XX 140 15.8 Holding 3 1.36 22 1.6047E-04 1.8464E-04

4.25 310-64010-XX-XX 200 22.5 Holding 4.5 2.04 26 6.4099E-04 7.3751E-04

5.0 310-74010-XX-XX 350 39.5 Holding 6.6 2.99 19 1.9996E-03 2.3007E-03

Nominal Static Torque

lb-in Nm lbs kg lb-in-sec

Friction

Material Type

Holding .5 0.23 13 1.7275E-05 1.9876E-05

Approximate Weight

Electric Power

(watts)

Hub and Disc Inertia

2

kg-cm-sec

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2

Ordering Information

Group “3” Armature Acting Brake

3-10: For AAB-S Models

AAB-S Unit Sizes Part Number

1.79

2.0

2.87

3.35

4.25

5.0

4=Standard Torque
3= Reduced Torque

Table 1: hub bores 310-24010 - -JA

Character

to insert

0D
0F
0H
0J
0L
0N

0O

0P

06
07
08
09
10
11
12
14
15
17
18
19
20
22
23
24

Bore

+001/.001

1/4

5/16

3/8
1/2
5/8
3/4
7/8

15/16

Metric

6
7
8

9
10
11
12
14
15
17
18
19
20
22
23
24

Width inches Depth inches

NOTE: Non-standard bore sizes available, contact factory.

*

*

Keyway Size

1/16
1/16
3/32

1/8
3/16
3/16
3/16

1/4

mm

2
2
2
3
3
4
4
5
5
5
6
6
6
6
8
8

1/32
1/32
3/64
1/16
3/32
3/32
3/32

1/8

mm

1
1
1

1.4

1.4

1.8

1.8

2.3

2.3

2.3

2.8

2.8

2.8

2.8

3.3

3.3

310-24010-0H-JA

2
3
4
5
6
7

Bores Available (Size)

3.352.0 4.252.871.79

X

X

X

X

X

X

X
X
X

X

X

X

X

X

X
X
X

X
X
X
X

X

X

X

X

Options – TABLE 3

Voltages – TABLE 2
Hub bore and Keyseat – TABLE 1

Character Options Available by size

0 standard brake ALL

Quiet operation,

H

plastic carrier disc

*With carrier disc option, size 3.35 torque is 50 lb-in holding,

and size 4.25 torque is 100 lb-in holding

1.79, 2.0, 2.87,

3.35

*, 4.25*

OptionsNumeral or Letter

1 Standard Unit

Enclosure typeNumeral

0

Table 2:

5.0

Coil Voltage 310-2401-0H- A

Character

to insert

X

X

X

X

X

X

X

* These voltages are non-standard.

Voltage

C *12 Vdc 1.01 1.10 1.29 1.82 1.76 1.26
E 24 Vdc .51 .55 .66 .93 .89 .64
G *48 Vdc .27 .29 .35 .46 .54 .40

J 90 Vdc .13 .14 .16 .23 .22 .16
L *180 Vdc .08 .09 .09 .13 .14 .11
N 115 Vac .11 .16 .16 .17 .25 .17
P 230 Vac .06 .08 .08 .09 .13 .09

None

*

Current Rating in amps

1.79 2.0 2.87 3.35 5.0

Table 3:

Options 310-24010-0H-J

Basic Brake, Magnet Body

A

Mounted, Long Hub

*

1.79, 2.0, 2.87, 3.35*

4.25*, 5.0*

* Sizes 3.35, 4.25 and 5.0 have a pass-through hub.

X
X

X

X

X

X

X

X

X

X

X

X

X
X

Available by sizeOptionsCharacter

68