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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 DD4B UJNT 3/8X3/8

Bore A & B

N/A 3/8 in

Type

N/A Universal Joints - DD Type

Material

N/A Steel

Style

N/A Bored

Weight

N/A 0.51 lb

Color

N/A Metallic

Bore Type

N/A Finished Bore

Connection Type A x B 

N/A 3/8 x 3/8 in

Dimensional Data

Size

N/A DD4B

Set Screw Size

N/A No Setscrew

Keyway A & B (W x D)

N/A No Keyway

Outside Diameter

N/A 0.750 in

Overall Length

N/A 5.380 in

Bore Depth (Dimension C)

N/A 0.880 in

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

N/A 0.620 in15.00 mm

Main Pin Height (Dimension E)

N/A 1.34 in

Dimension F (Standard)

N/A 2.680 in68.07 mm

Dimension F (Minimum)

N/A 1.810 in45.97 mm

Cubic inches

N/A 3.02625 in³

Performance Data

Operating Temperature Range

N/A -20 to 212 ºF

Static Breaking Torque

N/A 768.00 in·lb

Max. Speed

N/A 1750.00 rpm

Static Breaking Torque

N/A 768.00 in-lb

Max. Angle Offset

N/A 25.00 º
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