Corrosion-Resistant Sealed Single U-Joints


Ideal for wet environments, these U-Joints are stainless steel, so they have good corrosion resistance while also balancing strength. They have a heat- and water-resistant silicone cover (also known as a boot or bellows) to keep lubricant in and contaminants out. Since they come lubricated, you don’t need to lubricate them during installation. They're single U-joints, so they connect and transfer torque between two shafts that are misaligned at an angle. A good choice for operations that run continuously, they work at higher speeds and last longer than other types of joints, thanks to their needle bearings.
Connect these U-joints to shafts using the included set screws. Unlike U-joints that use spring pins, there’s no drilling required.
Your shafts’ misalignment will affect the speed and torque the U-joint will be able to transmit. The more the shafts are misaligned, the less speed and torque the U-joint will be able to transmit.
For technical drawings and 3-D models, click on a part number.
For Shaft | Keyway | Torque | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. | Dp. | Joint Dia. | Overall Lg. | OD | Wd. | Dp. | Max. Operating Angle | Max. Speed, rpm | Max. Torque, in.-lbs. | 3° Operating Angle | 10° Operating Angle | Bellows Material | Each | |
303 Stainless Steel with Steel Bearings | ||||||||||||||
| 3/8" | 15/16" | 3/4" | 2 11/16" | 1 3/8" | 3/32" | 3/64" | 35° | 6,000 | 95 | 28 in.-lbs. @ 1,000 rpm | 19 in.-lbs. @ 1,000 rpm | Silicone Rubber | 0000000 | 0000000 |
| 1/2" | 1 3/16" | 1" | 3 3/8" | 1 1/2" | 1/8" | 1/16" | 35° | 6,000 | 215 | 110 in.-lbs. @ 1,000 rpm | 77 in.-lbs. @ 1,000 rpm | Silicone Rubber | 0000000 | 000000 |
| 5/8" | 1 1/4" | 1 1/4" | 3 3/4" | 1 7/8" | 3/16" | 3/32" | 35° | 6,000 | 700 | 275 in.-lbs. @ 1,000 rpm | 185 in.-lbs. @ 1,000 rpm | Silicone Rubber | 0000000 | 000000 |
| 3/4" | 1 3/8" | 1 1/2" | 4 1/4" | 2 1/4" | 3/16" | 3/32" | 35° | 6,000 | 1,780 | 545 in.-lbs. @ 1,000 rpm | 370 in.-lbs. @ 1,000 rpm | Silicone Rubber | 0000000 | 000000 |
| 1" | 1 11/16" | 2" | 5 1/2" | 2 11/16" | 1/4" | 1/8" | 35° | 6,000 | 4,300 | 1,050 in.-lbs. @ 1,000 rpm | 705 in.-lbs. @ 1,000 rpm | Silicone Rubber | 0000000 | 000000 |
| 10mm | 24mm | 19mm | 68mm | 35mm | 3mm | 11mm | 35° | 6,000 | 95 | 28 in.-lbs. @ 1,000 rpm | 19 in.-lbs. @ 1,000 rpm | Silicone Rubber | 0000000 | 000000 |
| 20mm | 36mm | 38mm | 108mm | 57mm | 6mm | 23mm | 35° | 6,000 | 1,780 | 545 in.-lbs. @ 1,000 rpm | 370 in.-lbs. @ 1,000 rpm | Silicone Rubber | 0000000 | 000000 |
| 25mm | 43mm | 51mm | 140mm | 68mm | 8mm | 28mm | 35° | 6,000 | 4,300 | 1,050 in.-lbs. @ 1,000 rpm | 705 in.-lbs. @ 1,000 rpm | Silicone Rubber | 0000000 | 000000 |



























