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Inch/Metric
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Single U-Joint
Double U-Joint
0.1875 in
0.2500 in
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0.3750 in
0.4375 in
0.5000 in
0.5625 in
0.6250 in
0.7500 in
0.8750 in
1.0000 in
1.1250 in
1.1875 in
1.2500 in
1.3750 in
1.4375 in
1.5000 in
4 mm
5 mm
6 mm
7 mm
8 mm
9 mm
10 mm
11 mm
12 mm
14 mm
15 mm
16 mm
17 mm
18 mm
19 mm
20 mm
22 mm
24 mm
25 mm
28 mm
30 mm
32 mm
35 mm
0.1875 in
0.2500 in
0.3125 in
0.3750 in
0.4375 in
0.5000 in
0.5625 in
0.6250 in
0.7500 in
0.8750 in
1.0000 in
1.1250 in
1.1875 in
1.2500 in
1.3750 in
1.4375 in
1.5000 in
4 mm
5 mm
6 mm
7 mm
8 mm
9 mm
10 mm
11 mm
12 mm
14 mm
15 mm
16 mm
17 mm
18 mm
19 mm
20 mm
22 mm
24 mm
25 mm
28 mm
30 mm
32 mm
35 mm
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0.370 in
0.495 in
0.620 in
0.745 in
0.870 in
0.995 in
1.120 in
1.245 in
1.495 in
1.745 in
1.995 in
2.495 in
2.995 in
0.370 in (9.4 mm)
0.495 in (12.6 mm)
0.620 in (15.7 mm)
0.745 in (18.9 mm)
0.870 in (22.1 mm)
0.995 in (25.3 mm)
1.120 in (28.4 mm)
1.245 in (31.6 mm)
1.495 in (38.0 mm)
1.745 in (44.3 mm)
1.995 in (50.7 mm)
2.495 in (63.4 mm)
2.995 in (76.1 mm)
9.4 mm
12.6 mm
15.7 mm
18.9 mm
22.1 mm
25.3 mm
28.4 mm
31.6 mm
38.0 mm
44.3 mm
50.7 mm
63.4 mm
1.750 in
2.000 in
2.250 in
2.438 in
2.688 in
2.813 in
3.000 in
3.250 in
3.380 in
3.500 in
3.750 in
3.813 in
4.250 in
4.375 in
4.875 in
5.000 in
5.125 in
5.500 in
5.625 in
6.563 in
7.000 in
7.750 in
8.688 in
9.250 in
1.750 in (44.5 mm)
2.000 in (50.8 mm)
2.250 in (57.2 mm)
2.438 in (61.9 mm)
2.688 in (68.3 mm)
2.813 in (71.5 mm)
3.000 in (76.2 mm)
3.250 in (82.6 mm)
3.380 in (85.9 mm)
3.500 in (88.9 mm)
3.750 in (95.3 mm)
3.813 in (96.9 mm)
4.250 in (108.0 mm)
4.375 in (111.1 mm)
4.875 in (123.8 mm)
5.000 in (127.0 mm)
5.125 in (130.2 mm)
5.500 in (139.7 mm)
5.625 in (142.9 mm)
6.563 in (166.7 mm)
7.000 in (177.8 mm)
7.750 in (196.9 mm)
8.688 in (220.7 mm)
9.250 in (235.0 mm)
40.0 mm
44.5 mm
45.0 mm
50.0 mm
50.8 mm
56.0 mm
57.2 mm
61.9 mm
65.0 mm
68.3 mm
71.5 mm
72.0 mm
76.2 mm
82.0 mm
82.6 mm
85.7 mm
85.9 mm
88.9 mm
95.0 mm
95.3 mm
96.9 mm
108.0 mm
111.1 mm
122.0 mm
123.8 mm
127.0 mm
130.2 mm
139.7 mm
140.0 mm
142.9 mm
166.7 mm
177.8 mm
196.9 mm
220.7 mm

3004 products

3004 products

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Friction Bearing Universal Joints

Friction bearing type pin-and-block universal joints from Ruland are designed for applications with moderate-to-high-torque requirements in a wide variety of industries. Also called cardan joints or pin-and-block universal joints, they are manufactured from alloy steel for high strength or stainless steel for better corrosion resistance. They are comprised of precision machined, selectively heat-treated and ground components (yokes, pins and blocks) to maximize performance and service life. Single plain bearing universal joints are best suited for space constrained applications and are capable of angular misalignment up to 45°, significantly more than commodity style single u-joints. Double u-joints are better suited for applications with a wide distance between shafts or requiring angular misalignment up to 90°.

 

Ruland friction universal joints are available in OD sizes ranging from 3/8” to 4” in bore sizes ranging from 3/16” to 2” or 5mm to 35mm. They can have finished bores with or without keyways or machinable bores allowing the user to make custom sizes or geometries. All bore configurations can include a set screw.

About

Single U-Joint

Single friction bearing universal joints are best suited for space constrained applications with angular misalignment up to 45°, almost double that of commodity style u-joints. They are comprised of two yokes and one block that are joined by pins which are all precision machined and ground to ensure tight tolerances allowing for consistently smooth operation with minimal backlash. Single universal joints have higher torque capacity than equivalently sized double universal joints. They are available in steel for high torque and stainless steel for increased corrosion resistance. Straight and step bore sizes including inch to metric are available from 3/16” to 1-1/2” and 5mm to 35mm. Single universal joints can be combined with a boot to protect the joint from contaminants in the operating environment. The boot can be packed with grease for infinite life, reducing maintenance on the universal joint leading to more machine uptime.

EXPLORE >>
Single U-Joint
Double U-Joint

Double friction bearing universal joints are designed for applications with a wide distance between shafts or applications in need of extreme angular misalignment accommodation up to 90°. They are comprised of two yokes, two blocks, and a center spacer joined by pins. Components are precision machined and ground to maintain tight tolerances, which allows for smooth operation with minimal backlash. Double universal joints are available in steel for high torque and stainless steel for increased corrosion resistance. Straight and step bore sizes including inch to metric are available from 3/16” to 1-1/2” and 5mm to 35mm. Boots can be added to protect the joints from contaminants in the operating environment. Boots can be packed with grease allowing for infinite life helping to reduce machine downtime.

EXPLORE >>
Double U-Joint
Machinable Bores

Machinable bore friction universal joints are available in both single and double u-joint styles. They are purchased as a kit of parts or as a preassembled unit. The kit of parts is easier to work with as the yokes can be machined individual of the other components. Assembly once machine work is complete is simple to do with tools that are present in most manufacturing environments. Preassembled units are ideal when the joint will not need significant rework such as if it is welded or mounted to a plate on one side with the other side having a bore. Users can purchase the kit of parts or preassembled units and add the bore size and/or geometry of their choice themselves or through a local machine shop. This is most common when bore geometries such as spline, square, or hex are required. Machinable bore universal joints are available in steel for high torque and stainless steel for corrosion resistance. Outer diameters are available from 3/8” to 3” (9.5mm to 76.2mm).

EXPLORE >>
Machinable Bores

Products

Items 1-24 of 3004

Set Ascending Direction Set Descending Direction
  1. UD6-3-3-SS
    UD6-3-3-SS
    $279.10 ea
    Ruland UD6-3-3-SS, 3/16" x 3/16" Double Universal Joint, Friction Bearing, Stainless Steel, 0.370" OD, 2.438" Length
  2. UD8-4-4-F
    UD8-4-4-F
    $210.75 ea
    Ruland UD8-4-4-F, 1/4" x 1/4" Double Universal Joint, Friction Bearing, Steel, 0.495" OD, 2.813" Length
  3. USSK10-5-5-SS
    USSK10-5-5-SS
    $204.90 ea
    Ruland USSK10-5-5-SS, 5/16" x 5/16" Single Universal Joint, Friction Bearing, Stainless Steel, Set Screw With Keyway, 0.620" OD, 2.250" Length
  4. USSK12-6-6-SS
    USSK12-6-6-SS
    $190.15 ea
    Ruland USSK12-6-6-SS, 3/8" x 3/8" Single Universal Joint, Friction Bearing, Stainless Steel, Set Screw With Keyway, 0.745" OD, 2.688" Length
  5. UDSK12-6-6-F
    UDSK12-6-6-F
    $356.25 ea
    Ruland UDSK12-6-6-F, 3/8" x 3/8" Double Universal Joint, Friction Bearing, Steel, Set Screw With Keyway, 0.745" OD, 3.813" Length
  6. UDSK14-7-7-F
    UDSK14-7-7-F
    $362.80 ea
    Ruland UDSK14-7-7-F, 7/16" x 7/16" Double Universal Joint, Friction Bearing, Steel, Set Screw With Keyway, 0.870" OD, 4.375" Length
  7. UD14-7-7-SS
    UD14-7-7-SS
    $379.30 ea
    Ruland UD14-7-7-SS, 7/16" x 7/16" Double Universal Joint, Friction Bearing, Stainless Steel, 0.870" OD, 4.375" Length
  8. UDSK18-9-9-F
    UDSK18-9-9-F
    $373.90 ea
    Ruland UDSK18-9-9-F, 9/16" x 9/16" Double Universal Joint, Friction Bearing, Steel, Set Screw With Keyway, 1.120" OD, 5.125" Length
  9. UD18-9-9-F
    UD18-9-9-F
    $318.20 ea
    Ruland UD18-9-9-F, 9/16" x 9/16" Double Universal Joint, Friction Bearing, Steel, 1.120" OD, 5.125" Length
  10. UD18-9-9-SS
    UD18-9-9-SS
    $412.90 ea
    Ruland UD18-9-9-SS, 9/16" x 9/16" Double Universal Joint, Friction Bearing, Stainless Steel, 1.120" OD, 5.125" Length
  11. UDSK20-10-10-F
    UDSK20-10-10-F
    $431.30 ea
    Ruland UDSK20-10-10-F, 5/8" x 5/8" Double Universal Joint, Friction Bearing, Steel, Set Screw With Keyway, 1.245" OD, 5.625" Length
  12. UDSK20-10-10-SS
    UDSK20-10-10-SS
    $509.70 ea
    Ruland UDSK20-10-10-SS, 5/8" x 5/8" Double Universal Joint, Friction Bearing, Stainless Steel, Set Screw With Keyway, 1.245" OD, 5.625" Length
  13. UD20-10-10-F
    UD20-10-10-F
    $364.35 ea
    Ruland UD20-10-10-F, 5/8" x 5/8" Double Universal Joint, Friction Bearing, Steel, 1.245" OD, 5.625" Length
  14. UD20-10-10-SS
    UD20-10-10-SS
    $491.35 ea
    Ruland UD20-10-10-SS, 5/8" x 5/8" Double Universal Joint, Friction Bearing, Stainless Steel, 1.245" OD, 5.625" Length
  15. US24-12-12-SS
    US24-12-12-SS
    $323.10 ea
    Ruland US24-12-12-SS, 3/4" x 3/4" Single Universal Joint, Friction Bearing, Stainless Steel, 1.495" OD, 4.250" Length
  16. UD24-12-12-SS
    UD24-12-12-SS
    $507.40 ea
    Ruland UD24-12-12-SS, 3/4" x 3/4" Double Universal Joint, Friction Bearing, Stainless Steel, 1.495" OD, 6.563" Length
  17. UD32-16-16-SS
    UD32-16-16-SS
    $872.20 ea
    Ruland UD32-16-16-SS, 1" x 1" Double Universal Joint, Friction Bearing, Stainless Steel, 1.995" OD, 8.688" Length
  18. MUS25-12-12-F
    MUS25-12-12-F
    $351.25 ea
    Ruland MUS25-12-12-F, 12mm x 12mm Single Universal Joint, Friction Bearing, Steel, 25.3mm OD, 50.0mm Length
  19. MUS22-12-12-SS
    MUS22-12-12-SS
    $414.85 ea
    Ruland MUS22-12-12-SS, 12mm x 12mm Single Universal Joint, Friction Bearing, Stainless Steel, 22.1mm OD, 76.2mm Length
  20. MUSSK25-12-12-SS
    MUSSK25-12-12-SS
    $465.85 ea
    Ruland MUSSK25-12-12-SS, 12mm x 12mm Single Universal Joint, Friction Bearing, Stainless Steel, Set Screw With Keyway, 25.3mm OD, 85.7mm Length
  21. MUSSK29-14-14-F
    MUSSK29-14-14-F
    $397.90 ea
    Ruland MUSSK29-14-14-F, 14mm x 14mm Single Universal Joint, Friction Bearing, Steel, Set Screw With Keyway, 28.5mm OD, 56.0mm Length
  22. MUS32-16-16-SS
    MUS32-16-16-SS
    $445.95 ea
    Ruland MUS32-16-16-SS, 16mm x 16mm Single Universal Joint, Friction Bearing, Stainless Steel, 31.6mm OD, 95.3mm Length
  23. MUS64-30-30-F-140
    MUS64-30-30-F-140
    $1,105.35 ea
    Ruland MUS64-30-30-F-140, 30mm x 30mm Single Universal Joint, Friction Bearing, Steel, 63.4mm OD, 140.0mm Length
  24. MUSSK64-35-35-F
    MUSSK64-35-35-F
    $1,149.50 ea
    Ruland MUSSK64-35-35-F, 35mm x 35mm Single Universal Joint, Friction Bearing, Steel, Set Screw With Keyway, 63.4mm OD, 140.0mm Length
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