Lovejoy D12B Universal Joint Stainless Steel 1in Round Bore 1/4in Kw.
Lovejoy 68514444512 D12B Universal Joint, Stainless Steel 303, 1″ Round Bore and 1″ Round Bore, 1/4″ x 1/8″ Keyways with Setscrew, 2.00″ Outer Diameter, 5.44″ Overall Length.
Dimensional Data.
Bore A & B | 1 in |
Coupling | D12B |
Size | 1 |
Set Screw Size | 5/16-18 |
Keyway A & B (W x D) | 1/4 x 1/8 |
Outside Diameter | 2.000 in |
Overall Length | 5.440 in |
Bore Depth (Dimension C) | 1.500 in |
Max. Bore (Dimensions ID1/ID2) | 1.190 in 30.00 mm |
Main Pin Height (Dimension E) | 2.72 in |
Cubic inches | 21.76 in³ |
Performance Data
Operating Temperature Range | -30 to 212 ºF |
Max. Speed | 1750.00 rpm |
Static Breaking Torque | 10400.00 in-lb |
Max. Angle Offset | 25.00 º |
Lovejoy D12B Universal Joint Stainless Steel 1in Round Bore 1/4in Kw.
This Lovejoy D Type stainless steel single pin-and-block universal joint with bored hubs and set screw is designed to connect two rotating shafts at angles up to 25 degrees. This universal joint compensates for angular misalignments and has a single joint configuration for high torsional stiffness and torque capacity.
The hubs, center block, and pins are made of American Iron and Steel Institute (AISI) 303 stainless steel for corrosive environments and where sanitation requirements are a factor, and the bored hubs fit onto shafts without the need for machining.
A set screw secures the joint into position on the shaft, and a keyway prevents the shaft from rotating in the joint hub. Operating temperatures range from -30 to 212 degrees F. For optimal wear and extended life, boots (sold separately) are recommended, and boot retaining grooves are standard on this design.
This universal joint provides a uniform speed ratio between driving and driven shafts, and is suitable for applications requiring moderate torque transmission, such as compressors, fans, machine tools, printing presses, and textile machinery.
Universal joints (also called U-joints, universal couplings, Cardan joints, Hooke’s joints, or Hardy-Spicer joints) are used to transmit motion and rotational power, or torque, between two shafts that are offset at an angle. Most universal joints consist of two yokes and a middle assembly; the hub end of each yoke attaches to a shaft while the yoke ears attach to and pivot around the middle assembly to accommodate shaft misalignment.
The type of middle assembly determines its usage—pin and block joints are suitable for transmitting high torque, needle bearing joints are used to handle high rotational speeds, and ball and socket joints are used in applications requiring low backlash (play between moving parts). The body of the universal joint may include a single joint to accommodate only angular misalignments between shafts, or two joints to accommodate both angular and parallel misalignments.
