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Lovejoy Universal Joints

  • Industry wide standard
  • Manufactured by Lovejoy since 1946
  • Wide variety of sizes and options available
Universal Joints

Resources

Lovejoy Universal Joints Digital Catalog & 3D CAD

Lovejoy Universal Joints Catalog (pdf)

Curtis Universal Joints Catalog (pdf)

Installation Instructions & Videos

Curtis Universal Joints Website

Universal Joints Product Information

Lovejoy has been manufacturing industrial universal joints for over 50 years. Our industrial universal joint product line is well established and provides you with a wide range of standard and specialized products. The shape of the yoke is a special feature which results in exceptionally high strength, yet allows full, free movement of the joint. This accounts for the high horsepower capacity at high speeds.

Universal Joints Additional Resources

Click here to access Lovejoy’s Digital Parts Catalog for the most popular Universal Joints.

Please contact us if you are unable to find the part you are looking for.

Universal

Universal

Max

Max Bore

Max
Square/

Max

Static
Breaking

Joint

Joint

Angle

No
Keyway/
Round

Hex Hole*

Speed

Torque*

Type

Size

Offset

in

mm

in

mm

RPM*

in-lbs

Nm

D-Type

D-1 to D-14

25°

2.00

50

1.38

35

1,750

65,400

7389

HD-Type

D-1 to D-14

25°

2.00

50

1.38

35

1,750

65,400

7389

D303 Stainless

D4, 6, 8, 10, 12

25°

1.19

30

1.00

25

1,750

10,400

1175

Needle Bearing

D6, 8, 10, 12

25°

1.19

30

1.00

25

6,000

10,500

1186

LOJ

LOJ6, 8, 10

45°

See Data

–

See Data

–

–

3,480

393

LOJ JR-4

JR-4

45°

See Data

–

See Data

–

–

180

20

Multi-spindle

D-1 to D-14

25°

2.00

50

1.38

35

1,750

65,400

7389

Notes:

  • * Static breaking torque is not a recommended operating torque.
  • * Square and hex bores are measured across the flats.
  • Operation of all universal joints is determined by the angle/speed combinations of the application. Consult Lovejoy Engineering for specific limitations and recommendations.
  • Applications that fall outside the limitations of these tables should be referred Lovejoy Engineering for assistance.

Please download Universal Joint catalog for product dimensional data.

D Type

  • Standard pin and block design
  • Ideal for applications up to 25° and speeds to 1,750 RPM
  • Available in 13 sizes; round, hex, splined, or keyway bore
  • Boot retaining grooves are standard
  • Lubrication is required for optimal wear – boots and lubricant extend universal joint life

HD Type

  • Induction hardened yoke ears provide longer life
  • Hardened yokes are match fitted with universal components
  • HDD and HDDX drive line assemblies can also be provided to increase life of your drive line or drive shaft
  • Available in 13 sizes; round, hex, splined, or keyway bore
  • Boot retaining grooves are standard
  • Lubrication is required for optimal wear – boots and lubricant extend universal joint life

D303 Stainless

  • Made from 303 stainless steel material
  • Ideal for corrosive atmospheres and where sanitation requirements are a factor
  • Available in 5 standard sizes; round, hex, splined, or keyway bore
  • Boot retaining grooves are standard
  • Lubrication is required for optimal wear – boots and lubricant extend universal joint life

Needle Bearing Type

  • High quality, pre-lubricated, and sealed needle bearings
  • Ideal for applications up to 25° and speeds to 6,000 RPM
  • Available in 4 standard sizes; round, hex, splined, or keyway bore
  • Boot retaining grooves are standard
  • Lubrication is required for optimal wear – boots and lubricant extend universal joint life

LOJ and JR-4

  • Economical, offset pin design for use on hand operated, low torque drives
  • Capable for operating angles up to 45° of angular misalignment
  • Application examples: remote control linkages, snow blowers, packaging machinery, awning devices, etc
  • Available in 3 standard sizes; round, hex, splined, or keyway bore
  • JR-4 made of tough Zytrel® material – will not rust, no lubrication needed
  • JR-4 withstands oil, gasoline, salts, and temperatures from -40°F to 225°F (-40°C to 107°C)
 

DD and DDX Types

  • Designed with two Lovejoy D Type universal joints and a center connecting shaft
  • Compensates for both parallel misalignment and shaft separation
  • Available in 13 sizes; round, hex, splined, or keyway bore
  • Boot retaining grooves are standard
  • Lubrication is required for optimal wear – boots and lubricant extend universal joint life
 

Multi-Spindle Type

  • Consist of two quality HD universal joints mounted at opposite ends of a spring loaded shaft
  • Used to connect drill head drives to drill spindles

Universal Joint Boots

  • The life of a universal joint can be extended substantially if booted
  • Protects universal joint from dirt and contaminants, while lubrication is retained
  • Installation and replacement is fast and easy; machinery can be back in operation within minutes
  • Lovejoy D, DSS, DD, DDX, HD, and NB come pre-grooved
  • Use larger type diameter Upper Type boots when possible, and smaller diameter Lower Type boots when space is restricted
  • Standard boots are packaged two to a bag

Please Note: CAD Files are available for download from the digital catalog.

For additional documentation (in PDF form), please download the Universal Joint Catalog or contact Lovejoy customer service