The Timken Company - SC Type Spacer Coupling Hubs without Keyway, Short Length - Inch (Imperial) Bores

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Specifically designed for the pump industry, this coupling accommodates industry standard as well as special pump/motor separation
This shaft separation facilitates easy pump repair of pump packing, bearings, and seals without disturbing pump or motor mounting and alignment
The SC Type coupling consists of two flanges, a sleeve and two shaft hubs

Quick Coupling Removal

The center drop out section consists of two flanges and the flexible sleeve
The flange is bolted to the shaft hub with four hex head cap screws
The center drop out section can be removed by removing the hex head cap screws
Flats on each hub provides a convenient grip for a wrench in order to facilitate loosening of the screws and, if desired, turning of the pump/motor shafts
Once the hub is removed from the pump shaft, maintenance on the pump can be done without disturbing equipment alignment

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Unit of Measure

Items	68514436910 SC Type Spacer Coupling Hubs without Keyway, Short Length - Inch (Imperial) Bores	68514436912 SC Type Spacer Coupling Hubs without Keyway, Short Length - Inch (Imperial) Bores	68514436914 SC Type Spacer Coupling Hubs without Keyway, Short Length - Inch (Imperial) Bores	68514436916 SC Type Spacer Coupling Hubs without Keyway, Short Length - Inch (Imperial) Bores
Description	N/A 9SCHS-SPCR HUB-7/8-NKW	N/A 10SCHS-SPCR HUB-1-1/8-NKW	N/A 11SCHS-SPCR HUB-1-1/8-NKW	N/A 12SCHS-SPCR HUB-1-7/8-NKW
Bore Size	N/A 7/8 in	N/A 1 1/8 in	N/A 1 1/8 in	N/A 1 7/8 in
Hub #	N/A 9SCHS	N/A 10SCHS	N/A 11SCHS	N/A 12SCHS
Coupling Type	N/A Coupling Hubs
Material	N/A Cast Iron
Thread (Dimension T)	N/A 3/8-16	N/A 1/2-13	N/A 1/2-13	N/A 5/8-11
Keyway Size (W x D)	N/A No Keyway
Outside Diameter	N/A 3.630 in92.20 mm	N/A 4.380 in111.25 mm	N/A 5.250 in133.35 mm	N/A 5.750 in146.05 mm
Color	N/A Gray
Nominal Torque (with EPDM Sleeve)	N/A 1800 in·lb	N/A 2875 in·lb	N/A 4530 in·lb	N/A 7200 in·lb
Bore Type	N/A Finished Bore
Max. Bore	N/A 1.5 in	N/A 1.625 in	N/A 1.875 in	N/A 2.500 in
Max. Speed	N/A 3750.00 rpm	N/A 3600.00 rpm	N/A 3600.00 rpm	N/A 2800.00 rpm
Dimension L	N/A 1.530 in38.86 mm	N/A 1.660 in42.16 mm	N/A 1.910 in48.51 mm	N/A 2.530 in64.26 mm
Dimension SL	N/A 0.630 in16.00 mm	N/A 0.630 in16.00 mm	N/A 0.750 in19.05 mm	N/A 1.120 in28.45 mm
Torsional Stiffness	N/A 6875.00 in·lb/rad	N/A 10980.00 in·lb/rad	N/A 17300.00 in·lb/rad	N/A 27500.00 in·lb/rad
Rated HP at 100 rpm	N/A 2.90 hp	N/A 4.60 hp	N/A 7.20 hp	N/A 11.40 hp
Rated HP at 1,200 rpm	N/A 34.00 hp	N/A 55.00 hp	N/A 86.00 hp	N/A 137.00 hp
Rated HP at 1,800 rpm	N/A 51.00 hp	N/A 82.00 hp	N/A 129.00 hp	N/A 206.00 hp
Rated HP at 3,600 rpm	N/A 103.00 hp	N/A 164.00 hp	N/A 259.00 hp	N/A
# of Cap Screws Required	N/A 4
Cap Screw Required Size	N/A 5/8 - 4-1/2	N/A 7/16 - 2-1/2	N/A 1/2 - 2-3/4	N/A 5/8 - 3-1/2
Coupling Type	N/A S-Flex
Weight	N/A 5.30 lb	N/A 8.53 lb	N/A 1.24 lb	N/A 14.10 lb
Cubic inches	N/A 20.16066 in³	N/A 31.84610 in³	N/A 52.64438 in³	N/A 83.64813 in³