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
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Item #

Description 

Material

Set Screw Size

Outside Diameter

Overall Length

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

Static Breaking Torque

Main Pin Height (Dimension E)

N/A DD1 UJNT SOLID N/A Steel N/A No Setscrew N/A 0.380 in N/A 3.50 in N/A 0.250 in6.00 mm N/A 110.00 in-lb N/A 0.880 in
N/A DD2 UJNT SOLID N/A Steel N/A No Setscrew N/A 0.500 in N/A 4.00 in N/A 0.380 in9.00 mm N/A 378.00 in-lb N/A 1.000 in
N/A DD3 UJNT SOLID N/A Steel N/A No Setscrew N/A 0.620 in N/A 4.500 in N/A 0.500 in12.00 mm N/A 540.00 in-lb N/A 1.120 in
N/A DD4 UJNT SOLID N/A Steel N/A No Setscrew N/A 0.750 in N/A 5.380 in N/A 0.620 in15.00 mm N/A 768.00 in-lb N/A 1.34 in
N/A DD5 UJNT SOLID N/A Steel N/A No Setscrew N/A 0.880 in N/A 6.000 in N/A 0.690 in17.00 mm N/A 1176.00 in-lb N/A 1.500 in
N/A DD6 UJNT SOLID N/A Steel N/A No Setscrew N/A 1.000 in N/A 6.750 in N/A 0.750 in19.00 mm N/A 1560.00 in-lb N/A 1.680 in
N/A DD7 UJNT SOLID N/A Steel N/A No Setscrew N/A 1.120 in N/A 7.000 in N/A 0.880 in22.00 mm N/A 2880.00 in-lb N/A 1.750 in
N/A DD8 UJNT SOLID N/A Steel N/A No Setscrew N/A 1.250 in N/A 7.500 in N/A 1.000 in25.00 mm N/A 5220.00 in-lb N/A 1.880 in
N/A DD10 UJNT SOLID N/A Steel N/A No Setscrew N/A 1.500 in N/A 8.500 in N/A 1.12 in28 mm N/A 7920.00 in-lb N/A 2.12 in
N/A DD11 UJNT SOLID N/A Steel N/A No Setscrew N/A 1.75 in N/A 10.000 in N/A 1.25 in31 mm N/A 10680.00 in-lb N/A 2.5 in
N/A DD12 UJNT SOLID N/A Steel N/A No Setscrew N/A 2.000 in N/A 10.880 in N/A 1.5 in38 mm N/A 15600.00 in-lb N/A 2.72 in
N/A DD13 UJNT SOLID N/A Steel N/A No Setscrew N/A 2.500 in N/A 14.000 in N/A 1.75 in44 mm N/A 33120.00 in-lb N/A 3.5 in
N/A DD14 UJNT SOLID N/A Steel N/A No Setscrew N/A 3.000 in N/A 18.120 in N/A 2.00 in50 mm N/A 65400.00 in-lb N/A 4.53 in
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