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All Product Types > INDUSTRIAL MOTION PRODUCTS > Couplings & Power Transmission Parts Catalog > Disc Couplings > SX Type (Two Disc Pack) > SX-6 Type Hubs with Keyway - Metric Bores > Part Number 69790413835  
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Part Number 69790413835, SX-6 Type Hubs with Keyway - Metric Bores


    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.



Unit of Measure: Imperial Metric Both

Notes  · Specifications  · Dimensional Data  · Performance Data  · Features

Notes

Disclaimer
Lovejoy: CAD Models are accurate envelope dimensions only. Features such as bore size and keyway are not rendered or are only representative. Contact Lovejoy Technical Support or refer to product catalogs for details.


Specifications

Description 
SX255-6-HUB-65MMP7-18X4.4MMKW

Hub Style
Standard

Type
Disc Coupling Hubs

Hub Material
AISI 1045

Style
Bored

Color
Metallic

Coupling Series
SX-6

Coupling Type
Disc

Weight
39.87 lb

Weight (Complete Coupling w/ Max. Bores)
88.20 lb
40.00 Kg


Dimensional Data

Bore Size
65.00 mm

Size
255-6

Set Screw Size
No Setscrew

Keyway Size (W x D)
18 X 4.4 mm

Length thru Bore
4.530 in
115.06 mm

Overall Length (for SX Type coupling)
16.810 in
427.00 mm

Max. Bore (Dimensions ID1/ID2)
4.310 in
110.00 mm

Dimension FD
10.040 in
255.00 mm

Dimension HD
6.100 in
155.00 mm

Dimension PW
0.807 in
20.50 mm

Dimension S
6.140 in
156.00 mm

Distance between Shaft Ends (Dimension BSE)
7.750 in
197.00 mm

Cubic inches
456.63125 in³


Performance Data

Nominal Torque
90300.00 in·lb
10200.00 N·m

Max. Torque
180600.00 in·lb
20400.00 N·m

Max. Speed (Unbalanced)
3080.00 rpm

Max. Speed (Balanced)
7700.00 rpm

Axial Misalignment (+-D Ka) for couplings with TWO disc packs
0.185 in
4.70 mm

Max. Angular Misalignment (per single disc pack)
1.00 º

Torsional Stiffness x 10^6 (of one disc pack)
41.00 in·lb/rad
4.70 Nm/rad

Rated Power at 100 rpm
143.20 hp
106.80 kW


Features

Features 
  • 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



 DOWNLOADS 

Disc Coupling Catalog
(PDF, 0KB)

SX-6 Bolt Design Installation Instructions
(PDF, 0KB)

SX-6 Bolt Design Installation Video

SU Type Disc Coupling Installation Guide
(PDF, 0KB)

SU Type Disc Coupling Installation Video


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