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SX278-6 HUB 4-1/2 1X1/2 KW

BRAND: LoveJoy | MODEL: 69790497650 | CONDITION: NEW | SKU: 1800744
SX278-6 HUB 4-1/2 1X1/2 KW

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Weight: 39.24 lbs UOM: EA

Additional Description



    Note: SX Type Hubs are interchangeable for both the SU and SX style disc couplings (but not SXC style).
    The SU Type coupling has a single flex plane, and is comprised of a single disc pack kit with two hubs. It is suitable for angular and axial misalignment only. Two SU couplings are often combined with a shaft to make a floating shaft coupling. The shaft can be hollow for long light weight floating shaft couplings.
    The SX Type is the standard coupling type that includes two hubs, a stock length spacer designed to meet industry standard lengths, and two unitized disc packs. The coupling has two flex planes, one at each disc pack, allowing this coupling to accommodate parallel, angular, and axial misalignment with specified limits. The coupling is available in 4, 6, and 8 bolt designs and bore sizes up to 13 inches (330mm) on the largest size. Custom spacer lengths can be manufactured to meet special shaft separations required for specific applications. The SX coupling can be fitted with overload bushings to protect the disc packs in over torque conditions and can act as an anti-flail device. SX couplings are assembled at the time of installation on the equipment where the coupling will be in service.
Description SX278-6 HUB 4-1/2 1"X1/2 KW
Hub StyleStandard
TypeDisc Coupling Hubs
Hub MaterialAISI 1045
Coupling SeriesSX-6
Coupling TypeDisc
Weight39.24 lb
Weight (Complete Coupling w/ Max. Bores)125.70 lb
Dimensional Data
Bore Size 4 1/2 in
Keyway Size (W x D)1 x 1/2 in
Set Screw SizeNo Setscrew
Length thru Bore4.920 in124.97 mm
Overall Length (for SX Type coupling)18.470 in469.00 mm
Max. Bore (Dimensions ID1/ID2)4.880 in124 mm
Dimension FD10.950 in278.00 mm
Dimension HD6.850 in174.00 mm
Dimension PW0.835 in21.21 mm
Dimension S6.960 in177.00 mm
Distance between Shaft Ends (Dimension BSE)8.630 in219.00 mm
Cubic inches589.92030 in³
Performance Data
Nominal Torque125700.00 in·lb
Max. Torque251400.00 in·lb
Max. Speed (Unbalanced)2800.00 rpm
Max. Speed (Balanced)7000.00 rpm
Axial Misalignment (+-D Ka) for couplings with TWO disc packs0.205 in
Max. Angular Misalignment (per single disc pack)1.00 º
Torsional Stiffness x 10^6 (of one disc pack)63.00 in·lb/rad
Rated Power at 100 rpm199.50 hp148.80 kW
  • Unitized disc pack
  • Infinite life when properly sized and aligned
  • Accommodates angular, axial, and parallel misalignment
  • Torsionally rigid without any back lash
  • No need for lubrication or maintenance
  • No wearing parts and high resistance to harsh environmental conditions
  • Overload Bushings are available