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Universal Joints

Universal joints for are the latest addition to our product portfolio. By design a universal joint is a mechanical device that allows two shafts not in line with each other limited freedom of movement in any direction whilst transmitting rotary motion. Available in alloy steel, stainless steel or special materials, the single joint configuration can accept up to 35 degrees of angular misalignment where as the double joint designs can accept up to 70 degrees of shaft misalignment. By machining the assembly parts, not casting, the tensile strength and reliability of the universal joint is increased allowing static torques up to 1480 Nm as standard.

The Unique TakeApart ™ design.

Uniquely, the TakeApart ™ design allows for disassembly and reassembly of the universal joint without the use of special tools and replacement of component parts. This feature enables the end user to machine the hubs to fit the mating shaft if a standard bore does not. In addition to this, easier access to other components in a drive line can be achieved by being able to quickly and easily disassemble the joint after it has been installed in the application.

Abssac utilizes the Curtis Universal joint product, a leader in the manufacture of block and pin universal joints for industrial, commercial and military applications. All our universal joints have firm, positive lockup of the entire assembly thanks to the exclusive Tell-Tale Lock Ring design. With built-in lubrication passages via another exclusive internal lubrication system and the possibility of additional lubrication covers (boots) to keep out contaminants, all add to the longevity of the part. Our universal joints also are designed to reduce galling and seizing between parts as dissimilar materials are used on all bearing surfaces. Maximum wear and strength is also obtained from induction hardening the forks of the universal joint whilst keeping the hubs in an annealed state for ease of machining. Parts are also supplied with perfect concentricity with hubs ground on center and centering holes provided on solid hubs to aid in machining making them the ideal transmission partner.

Single joints - Stainless Steel & Alloy Steel

Up to 35 degrees of angular offset and bore diameters from 2mm to 60mm as standard. Many applications require corrosion resistant universal joints to assure sanitation or to avoid premature oxidation or deterioration. Utilizing 303 stainless steel as standard the U-joints are particularly important, for example, to industries that use food processing equipment, and for machinery that comes in contact with corrosive chemicals or is exposed to water for long periods. Furnace applications also benefit from stainless steel, which better withstands high temperatures and other environmental extremes. 304, 316 stainless steels can also be supplied by special order.

Alloy Steel Joints feature 41L40-grade steel for all forks. The forks of 22mm (7/8 inch) diameter and larger have induction-hardened bearing areas for strength and durability. The body (hubs) of the joints remain in an annealed state, which affords free machinability. The centre blocks and pins are machined from 86L20 alloy steel. Center-blocks and pins are carburized and case hardened to generate superior wear characteristics yet remain ductile, thereby enabling the joint to handle shock loads without experiencing premature failure. Universal joint hub modifications are available per customer specifications, which include but may not be limited to bores, keyways, set screw holes, square holes and hex holes.

Double Joints - Stainless Steel & Alloy Steel


Double joints are available in all 14 sizes and share all of the advantages of the single U-joint designs. Bore diameters from 2mm to 60mm are available as standard and allow the extra angularity to operate at angles up to 70°.

Naval Brass & Special Materials

For marine and other applications which require unusually high non-corrosion standards, we provide universal joints and parts in Alloy Steel, Stainless Steel, Bronze, Naval Brass, Aluminum-Bronze, Nickel-Aluminum-Bronze and Monel alloy. Naval brass joints are dimensionally the same as alloy steel joints, except for O.D. tolerance. Universal joint hub modifications are available per customer specifications, which include but may not be limited to bores, keyways, set screw holes, square holes and hex holes.

If you require further technical information, please do not hesitate to contact our sales engineers who will be more than happy to help you with your selection. Alternatively download the relevant rotary product catalogue from the download button at the top of this page or use the following link to request a printed catalogue or a CD version. CD/Catalogue

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