Curtis Naval Brass & Special Material Universal Joints
- Alloy Steel
- Stainless Steel
- Naval Brass
- Aluminum-Bronze
- Nickel-Aluminum-Bronze
- Monel
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