Curtis Naval Brass & Special Material Universal Joints

  • Alloy Steel
  • Stainless Steel
  • Naval Brass
  • Aluminum-Bronze
  • Nickel-Aluminum-Bronze
  • Monel
Alloy Steel Single Joints

Resources

Special Materials Additional Resources

For marine and other applications which require unusually high non-corrosion standards, Curtis provides universal joints and parts in Alloy Steel, Stainless Steel, Naval Brass, Aluminum-Bronze, Nickel-Aluminum-Bronze and Monel. 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, hex holes and splines.  For assistance in determining the proper size, material, and type of joint for your application, please contact us and provide us with your operating criteria and our engineers will spec out a product to meet your needs.

Applications

  • Depth Control Valves
  • Aircraft Machine Guns
  • Glass Manufacturing
  • Ship Reach Rods
  • Soft Ice Cream Machines
  • Navy Spec. MIL-N-994, COMP. A
  • Meet Military Spec. MIL-U-20625A, Class B

Alloy and Naval Brass joints are dimensionally the same except for O.D. tolerance

  • Alloy steel O.D. tolerance is +.000-.003″
  • Naval Brass O.D. tolerance is +/- .020″

NOTE #1. Large bearing pin is provided with an oil passage. 1.00″ through 4.00″ diameter joints are also fitted with a ball spring oil fitting to retain lubricant.

NOTE #2. Curtis standard single universal joints will operate through angles of 35. For applications requiring greater angles, special design can be employed, enabling the joint to operate at angles up to 45.

For bored universal joints in the table below, represented by the letter B at the end of the part number, the bore size is 1/2 of Outside Diameter +/- .001″

Model

Outside Diameter

Total Length

Centerline to End

A

C

C/2

BZ641

BZ641B

0.375

1.750

0.875

BZ642

BZ642B

0.500

2.000

1.000

BZ643

BZ643B

0.625

2.250

1.125

BZ644

BZ644B

0.750

2.688

1.344

BZ645

BZ645B

0.875

3.000

1.500

BZ646

BZ646B

1.000

3.375

1.688

BZ647

BZ647B

1.125

3.500

1.750

BZ648

BZ648B

1.250

3.750

1.875

BZ650

BZ650B

1.500

4.250

2.125

BZ651

BZ651B

1.750

5.000

2.500

BZ652

BZ652B

2.000

5.438

2.719

BZ653

BZ653B

2.500

7.000

3.500

BZ654

BZ654B

3.000

9.000

4.500

BZ655

BZ655B

4.000

10.625

5.313

Joint Diameter Max. Static Torque Inch Pounds*
3/8″ 75
1/2″ 200
5/8″ 470
3/4″ 750
7/8″ 900
1″ 1600
1-1/8″ 1900
1-1/4″ 2900
1-1/2″ 4700
1-3/4″ 8800
2″ 13000
2-1/2″ 16000
3″ 28000
4″ 65000

* Static Torque to 10° Deflection in Inch Pounds