NB
NB SW8UU 1/2" Sealed Ball Bushings Linear Motion
SW8UU Linear Ball Bushing 1/2 inch NB Japan
✔️ Sealed SW8UU Nippon Bearing linear bushing with 1/2 inch bore
This single SW8UU NB linear ball bushing is a handy high-accuracy unit made in Japan, built with seals on both sides and a steel retainer for smooth linear motion. It’s widely used in U.S. industrial equipment, automation rails, and precision slide systems that need clean, low-friction travel.
✅ Inner diameter 1/2 inch
✅ Outer diameter 7/8 inch
✅ Length 1-1/4 inch
✅ NB Nippon Bearing brand
✅ Sealed on both sides
✅ Four ball circuits for stable linear tracking
✅ Dynamic load rating 510 N
✅ Static load rating 784 N
✅ Pack size: 1 bushing
✅ Made in Japan
Dimensions Table (inch)
| Feature | Value | Tolerance |
|---|---|---|
| dr (ID) | 1/2" | 0 to -0.00025" |
| D (OD) | 7/8" | 0 to -0.0005" |
| L (Length) | 1-1/4" | 0 to -0.008" |
| B | 0.9625" | 0 to -0.008" |
| W | 0.0459" | , |
| D1 | 0.8209" | , |
| Eccentricity (precision) | 0.0003" | , |
| Eccentricity (high) | 0.0005" | , |
| Radial clearance | 0.0001" | , |
💡 How does a sealed linear ball bushing improve accuracy in guided motion systems?
Seals and precision raceways keep debris out and maintain consistent rolling contact.
- Reduces stick-slip for smoother travel
- Improves accuracy on CNC and automation rails
- Steel retainer helps maintain ball alignment
- Ideal for precision guiding in industrial setups
A clean, accurate pick when you want smooth linear motion with reliable Japanese-made quality.