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SB-C/T Series0 pages
General Purpose Clutches
SB/SBI
Overrunning, Indexing, Backstopping Ball Bearing Supported, Sprag Clutches
Model SB
General purpose, ball-bearing clutches
suitable for overrunning, backstopping and
light to medium-duty indexing applications.
They are oil lubricated and equipped with
lip type seals. Grease is available.
Increased speeds are possible with steel
labyrinth seals.
C/T Sprag Models
Standard clutches and all C/T clutches
are oil lubricated. Grease lubrication is
available for applications where
maintenance is inadequate, or where higher
inner race overrunning speeds are required.
The ground O.D. of the outer race is
designed as a pilot or mounting surface for
attaching parts and is concentric with the
bore. Tapped holes are provided in each
end of the outer race for securing these
parts to the clutches. Refer to Bore
Sizes/Shaft Tolerances chart for mounting
data, page 124.
For vertical mounting, contact
Application Engineering.
SBI-500 through 1027 clutches are
shipped from the factory with Mobil DTE
Light oil.
Grease Lubricated Clutches
SB-500 through 1027 clutches are
shipped from the factory packed with
Fiske Brothers Lubriplate Low-Temp
grease.
For further information, write for Installation and
Maintenance Bulletin No. 2219 for the FSO
series and No. 2213 for the HPI series.
C/T sprag clutches are ideal for
applications with high speed outer race
overrunning and low speed driving.
Available with oil lubrication only.
Typical Mounting Arrangement
Model SBI
SB
Especially designed for medium to heavyduty indexing applications, or applications
in excess of 150 strokes/min. to provide the
maximum in dependable, uniform, long life
performance. They are oil lubricated and
equipped with lip type seals. Grease is
available.
Oil Lubricated Clutches
SB-500 through 1027 clutches are shipped
from the factory with Mobil DTE Heavy
Medium oil.
Pump
The Model SB clutches must be secured to
the shaft by two set screws. For use in
backstopping applications, see available
torque arms on page 122.
Specifications
Maximum RPM
Standard Models
Lubrication
C/T Sprag Models
Oil
or
Grease
Oil
only
Resistance
after run-in
lb.ft.
(Nm)
SB
oz
(ml)
SBI
oz
(ml)
Shipping
Weight
lb
(kg)
.23
(.31)
.46
(.62)
1.15
(1.56)
3.75
(5.08)
5.25
(7.12)
6.25
(8.47)
10.00
(13.56)
.75
(22.0)
1.75
(52.0)
6.00
(168.0)
7.00
(207.0)
8.50
(251.0)
11.50
(340.0)
16.00
(473.0)
1.25
(35.0)
3.00
(84.0)
10.00
(280.0)
13.00
(384.0)
15.00
(444.0)
16.00
(473.0)
32.00
(946.0)
11.5
(5.3)
21
(9.6)
46
(21)
91
(41.6)
112
(51.2)
171
(78.1)
275
(125.7)
Overrunning Speed
Size
500
600
700
750
800
900
1027
Torque
Capacity
lb.ft.
(Nm)
875
(1138)
1,600
(2207)
4,000
(5518)
5,500
(7587)
10,800
(14900)
14,800
(20417)
22,300
(30764)
Oil and Grease
Lip Seals
Labyrinth
Grease Seals
Overrunning
Speed
Inner
Race
Outer
Race
Inner
Race
Outer
Race
Inner
Race
Outer
Race
Max.
drive
Sprag
lift-off
2,500
800
3,000
800
2,500
4,000
1,000
1,200
2,200
750
2,400
750
2,200
3,600
1,000
1,200
1,600
450
2,000
450
1,600
2,500
800
1,000
1,000
650
1,800
650
1,000
1,800
650
800
850
525
1,500
525
850
1,500
525
675
700
500
1,350
500
700
1,350
500
650
500
375
1,100
375
500
1,100
375
475
Note: Check key and shaft stress before making final clutch selection since this may determine the maximum allowable drive torque
capacity.
48 ___________________________________________________________________ Warner Electric/Formsprag (800-927-3262)
"
