Stearns Series 87000, Series 87100 Catalog Page
Series 87,000 and 87,100
Mounting Face: NEMA 182TC - 256TC/UC
The 87,X00** Series have the following design features:
2
min
17.5
(218)
17.5
(218)
17.5
(218)
17.5
(218)
17.5
(218)
17.5
(218)
17.5
(218)
17.5
(218)
20.0
(248)
5.4
.3
9.4
.5
15.4
1.0
5-55-7043-00
• Maximum Speed:
Horizontal 4000 rpm
Vertical 3600 rpm (modification required for
vertical mounting), see SAB Modification
Section.
Inertia (Wk2)
2
lb-ft
(kgm2 x 10-4)
87,70087,000 87,100
.048
(20.34)
.048
(20.34)
.048
(20.34)
.048
(20.34)
.048
(20.34)
.089
(37.40)
.089
(37.40)
.129
(54.45)
4.0
.3
5.6
.3
7.7
.5
— —
.078
—
(32.76)
.078
—
(32.76)
.078
—
(32.76)
.078
—
(32.76)
.089
.089
.129
.129
38.0
.5
42.8
.61
43.1
.8
(45.36)
(45.36)
(60.90)
.108
.108
.145
—
8.4
5.6
.1
.08
11.7
8.5
.16
.13
11.4
9.3
.2
.2
Additional Shaft
Length Required
in. (mm)
—
(—)
.56
(14.22)
.81
(20.64)
—
.88
(22.22)
.625
(15,88)
3.2
.04
3.7
.06
4.6
.09
(37.40)
(37.40)
(54.45)
—
(54.45)
1.9
.1
3.2
.2
4.2
.3
• Self-Adjusting Design
• Splined Hub
• Lead Wire Length: 24 inches
** Does not include 87,300 and 87,700 Series brakes.
Engineering Specifications
Nominal
Static
Torque
1 Maximum solenoid cycle rate is based on ambient temperature of 72°F (22°C) with 50%
lb-ft
(Nm)
6
(8)
10
(14)
15
(20)
25
(34)
35
(47)
50
(68)
75
(102)
105
(142)
125
(169)
No. of
Friction
Discs
1 5 30
1 5 30
1 6 25
1 6 25
1 8 20
2 6 25
2 8 20
3 8 20
3 8 20
Coil
Size
Maximum
Solenoid
Cycle
Rate
Cycles/
min
duty cycle. Does not relate to brake cycle rate (see Thermal Capacity).
2 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.
87,800 Thermal capacity is 14 hp-sec/min (174 watts).
1
Thermal
Capacity
hp-sec/
(watts)
Current Ratings (amperes)
Voltage: 60 Hz Voltage: 50 Hz Voltage: DC
115 200 230 400 460 575 110 220 380 24 95 115 230
4.3
3.7
2.2
1.9
.3
7.5
.4
10.3
.7
.2
6.5
.3
8.8
.6
.1
3.7
.2
5.0
.3
.1
3.2
.2
4.2
.3
1.5
.09
2.6
.1
3.5
.3
Current
Coil Size
Solenoid
inrush
5
holding
inrush
6
holding
inrush
8
holding
AC
7.5
.5
13.0
.6
17.6
1.2
Motor Frame Adapters/Special Endplate
To Adapt to
NEMA Frame Size
56C, 143TC, or
145TC
182TFC, 184TFC
284TC 286TC
metric — -10
324TC, 326TC,
364TC, 365TC,
404TC or 405TC
182TC/184TC,
213TC, 215TC,
254TC/256TC
For motor frame adapters: Series 87,000 through 87,800 see Technical Data
in.
(mm)
4.50
(114.30)
10.50
(266.70)
12.50
(317.50)
— -07
8.5
(215.90)
Reg.
No.
-05
-11 5-55-7055-00
-13 5-55-7046-00
-03 Extended endplate.
Adapter Stock Number
Brake endplate is modified for 4.50 in AK
Endplate modified for 130mm register
(AK) & 165mm bolt circle (AJ).
Endplate modified to provide a 6.75” male
register (AK) and 7.19” bolt circle (AJ).
BACK TO T ABLE OF CONTENTS
• Coil Insulation: Standard Class B Optional
Class H (Class H standard
on 87,800)
• Certified: CSA File LR-6254
• ABS Type Approval Certified
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:
1-087-031-00-BFF Lead wire position
(internal and external,
Series
left and right)
Torque
230 Vac
Enclosure
5/8 bore and
3/16 x 3/32 keyway
Modification
Hub Selection
Char-
Bore
(in.)
5/8
5/8
3/4
7/8
1-1/8
1-1/4
1-3/8
1-5/8
1-3/4
1-7/8
1/2
1
1-1/2
9/16
11/16
1-1/16
1-7/16
13/16
15/16
1-3/16
1-5/16
.600
Keyway**
(in. x in.)
1/8 x 1/16
3/16 x 3/32
3/16 x 3/32
3/16 x 3/32
1/4 x 1/8
1/4 x 1/8
5/16 x 5/32
3/8 x 3/16
3/8 x 3/16
1/2 x 1/4
1/8 x 1/16
1/4 x 1/8
3/8 x 3/16
1/8 x 1/16
3/16 x 3/32
1/4 x 1/8
3/8 x 3/16
3/16 x 3/32
1/4 x 1/8
1/4 x 1/8
5/16 x 5/32
pilot bore
acter
A*
B*
C*
D
E
F
G
H
I*
J*
K*
L*
M*
N*
O*
P*
Q*
R*
S*
T*
U*
Z
Maximum allowable bore 1.875 (maximum shaft
length not to exceed end of hub).
For thru-shaft applications 1.625 is maximum.
* These bores are non-standard.
**Keyseats made to ANSI B17.1 standard.
Direct Current
Character Voltage
T
U
V
W
X
Y
Z
Consult factory if other DC
voltage is needed.
12
24
36
48
95
115
230
Modifications are available-
see SAB Modification Section
Dimensional drawings are on the pages following.
Endplate
Standard AC
Voltage Ratings
Char-
Voltage Hz
acter
B 115 60
D 110 50
E 200 60
230
F
1906050
H 220 50
460
L
3806050
M 415 50
N 575 60
O 110/220 50
P 115/230 60
230/460
Q
190/3806050
R 200/400 60
17
Series 87,000
Mounting Face: NEMA 182TC 184TC, 213TC,
215TC, 254TC, and 256TC
(Note: for 182TFC and 184TFC mounting,
add a -05- register)
8.5” AK, 7.25” AJ
Static Torque: 6 through 105 lb-ft
Enclosure Material: IP 23 - Sheet Metal Housing, Aluminum Endplate. IP 54 &
55 - Cast Iron Housing and Endplate. IP 54 & 55 also available in sheet metal
housing, aluminum endplate. IP 56 - Cast iron housing and endplate.
Enclosure Protection: IP 23, 54 55 (formerly referred to as NEMA 2, 4 & 4X*
respectively) & IP 56. *BISSC Certified
Release Type: Pull Release Knob, maintained with automatic reset.
Vertical above IP 54 & 55 supplied with side manual release lever; and all
Cast Iron IP 55 brakes supplied with side manual release lever.
Installation, Service and Parts List: P/N 8-078-928-01 Rev. B brakes
Mounting: Horizontal, unless modified for vertical. Vertical mounting is defined as 15°
or more from horizontal. Vertical above requires modification. Vertical below requires
modification on 50-105 lb-ft brakes. Vertical above IP 54/55 includes side manual
release. See SAB Modification Section
Fanguard-mounted brakes requiring IP 54 or IP 55 protection may require additional
sealing measures beyond seals provided with the brake - Refer to Installation &
Service Instruction sheets.
Specifications including bore sizes/voltages: Page 17
Modifications: Pages 54-63
Including New Manual Adjust Option
BACK TO T ABLE OF CONTENTS
Brake set and release times in milliseconds,
when brake and motor are switched separately
(for T1/T2 definitions, see page 101):
Static Torque Coil Size T1 T2
10, 15, 25, 50 5 & 6 42 20
35, 75, 105 8 48 20
Outline Drawing for 1-087-0X2
Cast Iron Housing and Endplate
IP 54 & 55
* Hub location.
Dimensions for estimating only. For installation purposes request certified prints.
Outline Drawing for 1-087-0X1 and 1-087-0X4
Sheet Metal Housing, Aluminum Endplate
IP 23, 54 & 55
18
* Hub location.
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