Universal Joints


A universal joint is a mechanical joint used for connecting two shafts or rods whose axes are inclined at an angle to each other. The universal joint compensates for the angular misalignment and allows the shafts freedom of movement in any direction while transmitting rotary motion. The universal joint consists of a pair of hinges or fork shapes yokes oriented at 90° to one another and connected by a cross shaft. These joints are commonly used for connecting line shafts, drive shafts, conveyors and most types of rotating machinery to a prime mover. The universal joint is also known as a universal coupling, U-joint, Cardon Joint and Hooke’s joint.
Types of Universal Joint
• Single Joint: This has one bending point and can operate at angles of up to 45°. This type pf joint can accept up to 25° operating angle misalignment between the two shafts or rods from the central section. This joint is suitable for use in slow speed applications.
• Double Joint: This has two bending points and can operate at angles of up to 90°. This type of joint can accept up to 0° to 45° operating angle misalignment between the two shafts or rods from the central section. The advantage of the double universal joint is that it can also compensate for parallel misalignment.
Hub Styles
Universal joints are available with four hub styles:
• Solid: these do not have a machined hole.
• Bored: have a round, hex or square shaped hole.
• Splined: these have longitudinal grooves inside the bore.
• Keyed: these have keying to prevent the universal joint rotating on the shaft.
Bearing Types
Universal joints are available with two types of bearings:
• Plain Bearings: these are suitable for low speed applications and can support shock loads, motion reversals, irregular running and high torques.
• Needle Roller Bearings: these are suitable for high rotational speeds, low torques and wide angles.
Materials
The choice of universal joint material depends on the application they are going to be used in:

• Steel offers the ability to handle greater torque and temperature.
• Plastic offers rust corrosion and electrical and magnetic insulation.

Uses
Universal joints can be used in a wide range of applications including drive shafts, automotive propeller shafts, centrifugal fans and centrifugal pumps, belt conveyors, control mechanisms, marine equipment and metal forming machinery.
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Description Price Number of Joints Joint Type Hub Type Bore Hub Outer Diameter Overall Length Maximum Working Angle Peak Torque Material Maximum Speed Minimum Operating Temperature Maximum Operating Temperature
RS Stock No. 790-6693
BrandRS Pro
£17.96
Each
Single Plain Bored Hub 8mm 16mm 40mm 45° 600Nm Steel 1000rpm - -
RS Stock No. 790-6699
BrandRS Pro
£17.92
Each
Single Plain Bored Hub 6mm 16mm 34mm 45° 600Nm Steel 1000rpm - -
RS Stock No. 511-3791
Mfr. Part No.105.20.3535
BrandHuco
£10.67
Each
Single Plain Bored Hub 12 x 12mm 23mm 62mm 40° 2.8Nm Brass 1000rpm -20°C +60°C
RS Stock No. 790-6703
BrandRS Pro
£18.01
Each
Single Plain Bored Hub 10mm 22mm 48mm 45° 600Nm Steel 1000rpm - -
RS Stock No. 689-007
Mfr. Part No.103.13.2222
BrandHuco
£11.665
Each (In a Pack of 2)
Single Plain Bored Hub 6 x 6mm 14.3mm 46.2mm 45° 0.85Nm Brass 1000rpm -20°C +60°C
RS Stock No. 790-6706
BrandRS Pro
£20.01
Each
Single Plain Bored Hub 12mm 25mm 56mm 45° 600Nm Steel 1000rpm - -
RS Stock No. 688-975
Mfr. Part No.103.09.2020
BrandHuco
£10.78
Each (In a Pack of 2)
Single Plain Bored Hub 5 x 5mm 11.1mm 37.6mm 45° 0.36Nm Brass 1000rpm -20°C +60°C
RS Stock No. 790-6744
BrandRS Pro
£34.23
Each
Double Plain Bored Hub 8mm 16mm 62mm 90° 600Nm Steel 1000rpm - -
RS Stock No. 790-6700
BrandRS Pro
£20.60
Each
Single Plain Bored Hub 14mm 28mm 60mm 45° 600Nm Steel 1000rpm - -
RS Stock No. 790-6722
BrandRS Pro
£17.92
Each
Single Plain Bored Hub 10mm 16mm 56mm 45° 600Nm Steel 1000rpm - -
RS Stock No. 790-6719
BrandRS Pro
£21.79
Each
Single Plain Bored Hub 16mm 32mm 68mm 45° 600Nm Steel 1000rpm - -
RS Stock No. 790-6734
BrandRS Pro
£20.60
Each
Single Plain Bored Hub 16mm 25mm 86mm 45° 600Nm Steel 1000rpm - -
RS Stock No. 790-6716
BrandRS Pro
£28.21
Each
Single Plain Bored Hub 20mm 42mm 82mm 45° 600Nm Steel 1000rpm - -
RS Stock No. 790-6823
BrandRS Pro
£131.94
Each
Double Needle Roller Bored Hub 25mm 50mm 163mm 90° 200Nm Steel 4000rpm - -
RS Stock No. 688-947
Mfr. Part No.103.06.1414
BrandHuco
£9.63
Each (In a Pack of 2)
Single Plain Bored Hub 3 x 3mm 7.1mm 27.2mm 45° 0.11Nm Brass 1000rpm -20°C +60°C
RS Stock No. 511-3757
Mfr. Part No.111.09.2020
BrandHuco
£11.51
Each
Double Plain Bored Hub 5 x 5mm 11.1mm 50.8mm 90° 0.16Nm Brass 1000rpm -20°C +60°C
RS Stock No. 511-3808
Mfr. Part No.105.25.3535
BrandHuco
£13.84
Each
Single Plain Bored Hub 12 x 12mm 28.5mm 74mm 40° 5.6Nm Brass 1000rpm -20°C +60°C
RS Stock No. 689-035
Mfr. Part No.103.16.3232
BrandHuco
£11.57
Each (In a Pack of 2)
Single Plain Bored Hub 10 x 10mm 17.5mm 67.6mm 45° 1.6Nm Brass 1000rpm -20°C +60°C
RS Stock No. 790-6731
BrandRS Pro
£20.01
Each
Single Plain Bored Hub 12mm 22mm 76mm 45° 600Nm Steel 1000rpm - -
RS Stock No. 790-6804
BrandRS Pro
£61.75
Each
Single Needle Roller Bored Hub 25mm 50mm 108mm 45° 200Nm Steel 4000rpm - -
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