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Double Joint Arrangement
  • Designed with two Lovejoy D Type universal joints and a center connecting shaft
  • DD and DDX Type universal joints are tailored to your specific application requirements
  • This configuration compensates for both parallel misalignment and shaft separation
  • Round, hex, splined, or keyway bores are supplied per your requirements
  • Boot retaining grooves are standard. (Boots are available for purchase separately.)
  • Lubrication is required for optimal wear – boots and lubricant extend universal joint life
Unit of Measure

Notes

Disclaimer

 N/A 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 

 N/A
  • Static Breaking Torque is not recommended operating torque.
  • Square and hex bore measured across the flats.
  • Bores other than shown are available at additional charge.
  • Shorter centers upon request.

Specifications

Description 

 N/A DD3B-UJ-5/16X5/16-NKW NSS BE

Bore A & B

 N/A 5/16 in

Type

 N/A Universal Joints - DD Type

Material

 N/A Steel

Style

 N/A Bored

Weight

 N/A 0.30 lb

Color

 N/A Metallic

Bore Type

 N/A Finished Bore

Connection Type A x B 

 N/A 5/16 x 5/16 in

Dimensional Data

Size

 N/A DD3B

Set Screw Size

 N/A No Setscrew

Keyway A & B (W x D)

 N/A No Keyway

Outside Diameter

 N/A 0.620 in

Overall Length

 N/A 4.500 in

Bore Depth (Dimension C)

 N/A 0.680 in

Max. Bore - No Keyway (Dim. ID1 & ID2)

 N/A 0.500 in12.00 mm

Main Pin Height (Dimension E)

 N/A 1.120 in

Dimension F (Standard)

 N/A 2.250 in57.15 mm

Dimension F (Minimum)

 N/A 1.560 in39.62 mm

Cubic inches

 N/A 1.72980 in³

Performance Data

Operating Temperature Range

 N/A -20 to 212 ºF

Static Breaking Torque

 N/A 540.00 in·lb

Max. Speed

 N/A 1750.00 rpm

Static Breaking Torque

 N/A 540.00 in-lb

Max. Angle Offset

 N/A 25.00 º
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