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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
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Unit of Measure
Items
Universal Solid Joints w/ Double Joint Arrangement - Imperial

DD Type without Keyway - Inch (Imperial) Bores
Universal Solid Joints w/ Double Joint Arrangement - Imperial

DD Type without Keyway - Inch (Imperial) Bores
Universal Solid Joints w/ Double Joint Arrangement - Imperial

DD Type without Keyway - Inch (Imperial) Bores
Universal Solid Joints w/ Double Joint Arrangement - Imperial

DD Type without Keyway - Inch (Imperial) Bores
Universal Solid Joints w/ Double Joint Arrangement - Imperial

DD Type without Keyway - Inch (Imperial) Bores
Description  N/A DD1B-UJ-3/16X3/16-NKW NSS BE N/A DD2B-UJ-1/4X1/4-NKW NSS BE N/A DD3B-UJ-5/16X5/16-NKW NSS BE N/A DD4B-UJ-3/8X3/8-NKW NSS BE N/A DD5B-UJ-7/16X7/16-NKW NSS BE
Bore A & B N/A 3/16 in N/A 1/4 in N/A 5/16 in N/A 3/8 in N/A 7/16 in
Type N/A Universal Joints - DD Type
Size N/A DD1B N/A DD2B N/A DD3B N/A DD4B N/A DD5B
Material N/A Steel
Set Screw Size N/A No Setscrew
Keyway A & B (W x D) N/A No Keyway
Style N/A Bored
Outside Diameter N/A 0.380 in N/A 0.500 in N/A 0.620 in N/A 0.750 in N/A 0.880 in
Overall Length N/A 3.50 in N/A 4.00 in N/A 4.500 in N/A 5.380 in N/A 6.000 in
Weight N/A 0.08 lb N/A 0.17 lb N/A 0.30 lb N/A 0.51 lb N/A 0.80 lb
Color N/A Metallic
Operating Temperature Range N/A -20 to 212 ºF
Static Breaking Torque N/A 110.00 in·lb N/A 378.00 in·lb N/A 540.00 in·lb N/A 768.00 in·lb N/A 1176.00 in·lb
Bore Depth (Dimension C) N/A 0.560 in N/A 0.620 in N/A 0.680 in N/A 0.880 in N/A 0.880 in
Bore Type N/A Finished Bore
Max. Bore - No Keyway (Dim. ID1 & ID2) N/A 0.250 in6.00 mm N/A 0.380 in9 mm N/A 0.500 in12.00 mm N/A 0.620 in15.00 mm N/A 0.690 in17.00 mm
Max. Speed N/A 1750.00 rpm
Static Breaking Torque N/A 110.00 in-lb N/A 378.00 in-lb N/A 540.00 in-lb N/A 768.00 in-lb N/A 1176.00 in-lb
Main Pin Height (Dimension E) N/A 0.880 in N/A 1.000 in N/A 1.120 in N/A 1.34 in N/A 1.500 in
Dimension F (Standard) N/A 1.750 in44.45 mm N/A 2.000 in50.80 mm N/A 2.250 in57.15 mm N/A 2.680 in68.07 mm N/A 3.000 in76.20 mm
Dimension F (Minimum) N/A 1.180 in29.97 mm N/A 1.380 in35.05 mm N/A 1.560 in39.62 mm N/A 1.810 in45.97 mm N/A 2.120 in53.85 mm
Connection Type A x B  N/A 3/16 x 3/16 in N/A 1/4 x 1/4 in N/A 5/16 x 5/16 in N/A 3/8 x 3/8 in N/A 7/16 x 7/16 in
Max. Angle Offset N/A 25.00 º
Cubic inches N/A 0.50540 in³ N/A 1.00000 in³ N/A 1.72980 in³ N/A 3.02625 in³ N/A 4.64640 in³