All Product Types > INDUSTRIAL MOTION PRODUCTS > Couplings & Power Transmission Parts Catalog > Curved Jaw Couplings > CJ Series (Standard Curved Jaw) Components > Part Number 68514476181  

Part Number 68514476181, Curved Jaw Coupling Hub w/o Keyway

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    A complete CJ Series coupling is comprised of two standard CJ hubs and one CJ spider. Four types of spiders are available for the CJ Series.




Notes  · Specifications  · Dimensional Data  · Performance Data  · The Curved Jaw Design

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.

Notes 
  • Maximum bore may be achieved through the use of a shallow keyway.
  • Maximum bore refers to maximum straight bore with keyway allowed in hub.
  • Outside Diameter is equal to Dimension HD for B style aluminum sizes: 19, 24, and 28.
  • S = Solid hub with no bore
  • Spider Outside Diameter (Dimension A) is equal to Outside Diameter
  • The values regarding displacement are provided assuming normal operating conditions (i.e. temperature, torque with nominal rating of the coupling, speed/ RPM rating of the coupling, and misalignment).
    Careful installation (i.e. alignment) and periodic inspection should be provided to provide the optimum life of the coupling. Special consideration should be given as to the position of the shafts and the amount of axial movement the coupling will be exposed to.
    The more accurate the alignment of the coupling, will result in greater life of the elastomer. A coupling guard and rotating equipment safety procedures should always be followed.
    Please consult the Lovejoy web site at www.lovejoy-inc.com for assembly instructions of the curved jaw coupling.


Specifications

Description 
CJ28/38B-HUB-STL-24MMH7-8X3.3MMKW

Hub Style
B

Type
Curved Jaw Coupling Hubs

Hub Material
Steel

Style
Bored

Coupling Type
Jaw

Weight
1.76 lb


Dimensional Data

Bore Size
24.00 mm

Coupling Size
28

Set Screw Style Coupling Size (Dimension T)
5/16-18

Set Screw Style Coupling Location Size (Dimension SL)
0.590 in
14.99 mm

Length thru Bore (Dimensions LTB1/LTB2)
1.380 in
35.05 mm

Overall Coupling Length
3.540 in
89.92 mm

Outside Diameter
2.560 in
65.02 mm

Spider Inside Diameter
1.180 in
29.00 mm

Spider Outside Diameter
2.560 in
65.00 mm

Spider Thickness (Dimension W)
0.590 in
15.00 mm

Min. Bore (Dimensions ID1/ID2)
0.870 in
22.00 mm

Max. Bore (Dimensions ID1/ID2)
1.5 in
38 mm

Dimension G
0.790 in
20.07 mm

Dimension HD
2.560 in
65.02 mm

Distance between Spider and Hub Face (Dimension CL)
0.100 in
2.54 mm

Cubic inches
9.04397 in³


Performance Data

Normal Temperature Range (with 80 Shore A, 92 Shore A, and 95/98 Shore A spiders)
-40 to 212 ºF

Max. Temperature Range (with 80 Shore A, 92 Shore A, and 95/98 Shore A spiders)
-50 to 248 ºF

Nominal Torque (with 92 Shore A spider)
840.00 in·lb
95.00 N·m

Max Torque (with 92 Shore A spider)
1680.00 in·lb
190.00 N·m

Max. Speed
8500.00 rpm

Angular Displacement
0.050 in

Max. Angular Displacement (∆ Ka), n=1500 [1/min]
0.90 º

Max. Axial Displacement (∆ Ka)
0.0600 in

Max. Radial Displacement (∆ Kr)
0.0100 in


The Curved Jaw Design
  • Three piece design that is easy to assemble
  • The curved jaw design incorporates both radial and axial curvature (crowning) to the elastomer (spider)
  • Hubs are offered in sintered iron, steel, aluminum, cast iron and nodular iron materials
  • Three different urethane elastomers available
  • No metal to metal contact and no lubrication required
  • Fail safe design due to the jaw in compression design (continues to function after the elastomer fails)
  • The CJ series covers a torque range of 67 to 247,800 in-lbs


 MORE IMAGES 

·  CJ Series Installation & Misalignment Capabilities

·  CJ Series Displacement



 DOWNLOADS 

Curved Jaw Catalog
(PDF, 0KB)

Standard Curved Jaw Installation Instructions
(PDF, 0KB)

Standard Curved Jaw Installation Video