Stearns 1-086-XXX, 1-086-1XX Catalog Page

Series 86,000 (1-086-XXX)

Mounting Face: NEMA 444 and 445TC, TSC, UC or USC

16.0” AK, 14.0” AJ

Series 86,100 (1-086-1XX)

Mounting Face: NEMA 505TC, TSC, UC or USC

16.5” AK, 14.5” AJ

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Static Torque: 500 through 1000 lb-ft
Enclosure Material: Cast Iron
Release Type: Knob, maintained with automatic reset
Enclosure Protection: IP 23 & 54 (formerly referred to

by Stearns as NEMA type 2 & 4 respectively).
Mounting: Fanguard-mounted brakes requiring IP 54

protection may require additional sealing measures
beyond seals provided with the brake - Refer to
Installation & Service Instruction sheets.

Installation, Service and Parts List: P/N 8-078-926-00

Additional 86,000 Specs: Double Solenoid Design Terminal

Block Provided.
Modification required for vertical mounting, available through 750 lb-ft only.

• Self-Adjusting Design

• Splined Hub

• Spring-Set Electrically Released

• Lead Wire Length: 36 inches

• Maximum Speed: 1800 rpm

• Coil Insulation: Standard Class B
Optional Class H

• Certified: CSA File LR-6254

• ABS Type Approval Certified

*86,100 Series AK = 16.502/16.507 AJ = 14.50

Dimensions for estimating only. For installation purposes request certified prints.

Dimensional Data

Nominal

Static

Torque

(lb-ft)

(Nm)

500

(678)

500

(678)

750

(1017)

750

(1017)

1000

(1356)

1000

(1356)

Enclosure Type

IP 23

IP 54

IP 23

IP 54

IP 23

IP 54

Basic Model

Number

AC DC1-086-X21-02

1-086-X25-02

AC DC1-086-X22-02

1-086-X26-02

AC DC1-086-X31-02

1-086-X35-02

AC DC1-086-X32-02

1-086-X36-02

C DC1-086-X41-02

A

1-086-X45-02

AC DC1-086-X42-02

1-086-X46-02

 X = 0 or 1. 0 designates a 16 in. “AK”, 14 in “AJ”. 1 designates 16.5 in. “AK”, 14.5 in. “AJ”.

Foot mounting adds 75 lbs. (34 kg) to weight.

Dimensions in Inches

(Dimensions in Millimeters)

A

Cast

13.31
(338.14)

13.38
(339.72)

13.31
(338.14)

13.38
(339.72)

13.31
(338.14)

13.38
(339.72)

Iron

(19.05)

1.69
(42.86)

1.12
(28.58)

2.06
(52.39)

1.50
(38.10)

2.44
(61.91)

AG C E

.75

1.5
(38.1)

2.44
(61.91)

2.25
(57.15)

3.19
(80.96)

3.0
(76.2)

3.94

(100.01)

.94
(23.88)

.0
(0.0)

.94
(23.88)

.0
(0.0)

.94
(23.88)

.0
(0.0)

Cast
Iron
Wt. lbs

(kg)

310

(141.0)

320

(145.0)

330

(150.0)

340

(154.0)

350

(159.0)

360

(164.0)

Motor Frame Adapters

AK.

To adapt to

NEMA Frame

Size

324TC, 326TC,
364TC, 365TC,

404TC or 405TC

For adapter dimensions, see Technical Data.

Dim

in.

(mm)

12.50

(317.50)

Reg.

No.

Adapter

Number

5-55-6041-00-13

Stock

Additional

Shaft Length

Required

in.

(mm)

1.38

(34.92)

25

Series 86,000 Specifications continued

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Engineering Specifications*

Nominal

Static

Torque

lb-ft

(Nm)

500

(678)

750

(1017)

1000

(1356)

No. of

Friction

Discs

Solenoid

Size

1

DCAC

* All specifications are also applicable to the 86,100 Series.

1 Two required.
2 Maximum solenoid cycle rate is based on ambient temperature of 72°F (22°C) with 50% duty cycle. Does

not relate to brake cycle rate (see Thermal Capacity).

3 Thermal capacity rating is based on ambient temperature of 72°F (22°C), stop time of one second or

less, with no heat absorbed from motor. Derate thermal capacity by 25% for vertical mounting. Refer to
“Selection Procedure” Section.

Maximum

Solenoid

Cycle Rate

cycles/min

AC

139K94

DC

15139K92

15139K93

15

2

Thermal

Capacity

3

hp-sec/min

(watts)

80

(994)

80

(994)

80

(994)

Inertia (Wk2)

2

lb-ft

(kgm2 x 10-3)

1.4

(58.8)

2.1

(88.2)

2.8

(117.6)

Current Ratings (amperes)

Voltage: 60 Hz
Coil
Size

Current

Inrush

Voltage: 50 Hz

K9

Current

Inrush

Voltage: DC

Current

9

Inrush

Holding

Holding

Holding

115

VAC

100.

4.4

110

VAC

72.0

3.2

24

VDC

112.8

1.4

200

VAC

56.0

2.4

220

VAC

48.0

1.8

29.8
.4

Ordering and Identification Information

The following example and tables provide information for selecting the
appropriate three-letter suffix when ordering a Stearns Brake.

Example of a complete part number: 1-086-031-02-NLF Lead wire position (internal and external, left and right)
460 Vac

Designate 0 for 16 in. “AK”, 14 in. “AJ”
Designate 1 for 16.5 in. “AK”, 14.5 in. “AJ”

2-7/8 bore and 3/4 x 3/8 keyway

230

VAC

50.0

2.2

380

VAC

25.0

1.2

115

VDC

22.8
.2

400

VAC

28.0

1.2

—

230

VDC

11.8
.14

460

VAC

25.0

1.2

—

—

575

VAC

20.0
.8

—

—

Hub Selection

Character

D
H
K
L

N
P
T
V

W

Z

Maximum allowable bore 4.500 in. (maximum

shaft length not to exceed end of hub)
For through-shaft applications, 4.000
is maximum.

*Keyseats made to ANSI B17.1 standard

Bore

(in.)

2-1/8
2-3/8
2-5/8
2-3/4

2-7/8
3-3/8

3-1/2
1-7/8

Keyway*
(in. x in.)

1/2 x 1/14
5/8 x 5/16
5/8 x 5/16
5/8 x 5/16

3/4 x 3/8

3

3/4 x 3/8
7/8 x 7/16
7/8 x 7/16

pilot bore

4

1 x 1/2

Modifications are available-see SAB Modification Section

Standard AC
Voltage Ratings

HzVoltageCharacter

60

B
D
E

F
H

M
N

Single voltage coils only ­dual voltage coils not allowed

115

50

110

60

200

60

230

50

190

50

220

60

460

L

380
415
575

50
50
60

Direct Current

VoltageCharacter

U
V
W

X
Y

Z

Contact factory if other
DC voltage is needed.

24
36
48

95
115
230

26