Stearns 1-048-1XX Catalog Page
Series 48,100 (1-048-1XX)
Mounting Face: 48C
3.0” AK, 3.75” AJ
Static Torque: 1.5 through 6 lb-ft
Enclosure: IP23 (formerly referred to by
Stearns as NEMA 2), Stamped Steel Housing
Release Type: Side Lever
Installation and Service Instructions:
P/N 8-078-924-06
Parts List: P/N 8-078-914-02
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• Adjustable Torque
• Manual Wear Adjustment
• Side Manual Release Lever with
Automatic Reset
• Class B Coil Insulation
• Spring-Set Electrically Released
• Lead Wire Length: 24 inches
• Maximum Speed: Horizontal 5000 rpm
• Certified: CSA File LR-6254.
Specifications
Nominal
Static
Torque
Maximum solenoid cycle rate is based on ambient temperature of 72°F (22°C) with 50% duty
1
Thermal capacity rating is based on ambient temperature of 72°F (22°C), stop time of one
2
Number of
Friction
lb-ft
(Nm)
1.5
(2)
3
(4)
6
(8)
cycle. Does not relate to brake cycle rate (see Thermal Capacity).
second or less,
mounting. Refer to Selection Procedure Section.
Discs
with no heat absorbed from motor. Derate thermal capacity by 25% for vertical
Coil Size
AC DC
4
4
K4
Maximum
Solenoid
Cycle Rate
cycles/min
DCAC
4041
20
20
36K41
20
36M41
1
hp-sec/min
Thermal
Capacity 2
(watts)
4
(50)
4
(50)
4
(50)
Inertia (WK2)
2
lb-ft
(kgm2 x 10-4)
.003
(1.26)
.003
(1.26)
.003
(1.26)
Ordering and Identification
Information
The following example and tables provide
information for selecting the appropriate threeletter suffix when ordering a Stearns Brake.
Example of a complete part number:
1-048-161-XX-BP Lead wire position
Series
Torque
Enclosure
00= Internal and
external leadwire
position
01= Internal only
does not apply
115/230 Vac
5/8 bore and
3/16 x 3/32 keyway
Current Ratings (amperes)
Coil
Current
Size
Inrush
4
Holding
Inrush
K4
Holding
Inrush
M4
Holding
Modifications are available-
see SAB Modification Section
Dimensions for estimating only. For installation purposes request certified prints.
Unit Data
Voltage: 60 Hz
230
115
Vac
Vac
1.8
3.6
.2
.3
2.2
4.3
.2
.3
1.5
3.0
.3
.6
Number*
1-048-151-00-XX
1-048-151-01-XX
1-048-161-00-XX
1-048-161-01-XX
1-048-171-00-XX
1-048-171-01-XX
575
460
Vac
Vac
.7
.9
.06
.08
.9
1.1
.07
.08
.6
.8
.1
.1
Model
Nominal Static
Hub Selection
Bore
Char-
acter
A*
C*
Maximum allowable bore .750.
For through-shaft applications
.625 is maximum
* These bores are non-
standard.
** Keyseats made to
ANSI B17.1 Standard.
(in.)
Keyway**
(in. x in.)
1/8 x 1/165/8
3/16 x 3/325/8B
3/16 x 3/323/4
1/8 x 1/161/2K
Torque
(lb-ft)
(Nm)
1.5
(2)
1.5
(2)
3
(4)
3
(4)
6
(8)
6
(8)
Weight
Standard AC
Voltage Ratings
Includes DC electronic switch
(polarized).
lbs
(kg)
4.6
(2.1)
4.6
(2.1)
4.6
(2.1)
4.6
(2.1)
(2.3)
(2.3)
F
L
Q
5
5
* Eighth and
Ninth positions
designate lead
wire position:
00 =internal and
external 01 =
internal only.
230
190
460
380
208-230/460
190/380
HzVoltageCharacter
60115B
50110D
60200E
60
50
50220H
60
50
50415M
60575N
50110/220O
60115/208-230P
60
50
60200/400R
9
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