The Timken Company - DD Type without Keyway - Inch (Imperial) Bores

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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	68514417075 DD Type without Keyway - Inch (Imperial) Bores	68514417078 DD Type without Keyway - Inch (Imperial) Bores	68514417087 DD Type without Keyway - Inch (Imperial) Bores	68514417094 DD Type without Keyway - Inch (Imperial) Bores	68514417102 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