Choose your Pillow Block Bearing by Shaft diameter
Select your shaft diameter to find the perfect UC series bearing model for your application
Next Step: Choose Your Bearing Housing
Scroll down to explore our bearing housing products. After confirming your bearing model, selecting the matching housing for your equipment is crucial for optimal performance and durability.
Note: This tool helps you quickly identify the correct UC series bearing model based on your shaft diameter. For detailed specifications or custom requirements, please contact our technical team.
FAQ
1. How do I choose a pillow block bearing based on shaft diameter?
The simplest way is to match your shaft diameter directly to the bearing bore size. For example:
- 20 mm shaft → UC204
- 25 mm shaft → UC205
Make sure the bore size is exactly the same as your shaft to avoid vibration or installation issues.
2. What happens if I choose a bearing with a larger bore than my shaft?
Using a larger bore can cause:
- Shaft slipping
- Increased vibration
- Premature bearing failure
3. Can I use a smaller bearing for a larger shaft?
No, this is not possible. A smaller bore will not fit the shaft and may damage both the bearing and shaft during installation.
4. Are pillow block bearing sizes standardized?
Yes. Most pillow block bearings follow international standards. Common series include:
- UC200 series (light to medium duty)
- UC300 series (heavy-duty applications)
5. How do I know if my shaft size is metric or inch?
You can measure the shaft using a caliper:
- If the measurement is a round number (e.g., 25 mm, 30 mm) → Metric
- If it's fractional (e.g., 1", 1-1/4") → Inch size
6. What if my shaft size falls between standard sizes?
If your shaft size is non-standard, you have several options:
- Machine the shaft to a standard size
- Use a sleeve adapter
- Request a custom bearing
Choose the Right Bearing Housing
After selecting the correct bearing, choose the appropriate bearing housing based on your mounting requirements and application environment.
Tapped Base Pillow Block
Parallel mounting with compact footprint, ideal for space-constrained installations.
High-Center Pillow Block
Parallel mounting with elevated shaft height for specialized applications.
Pillow Block (Standard)
Parallel to mounting surface, versatile and widely used in general industrial applications.
Four-Bolt Square Flange
Perpendicular to mounting surface, robust four-point mounting for stability.
Adjustable Flange
Adjustable slots for precise alignment and installation flexibility.
Three-Bolt Flange
Fflange design with four-bolt mounting for balanced load distribution.
Four-Bolt Cartridge Flange
Compact square flange with cartridge insert for easy bearing replacement and maintenance.
Two-Bolt Oval Flange
Perpendicular mounting with compact design, perfect for limited spaces.
Take-Up Unit
Adjustable design for belt tensioning and alignment in conveyor systems.
Need More Options or Custom Solutions?
We offer a complete range of bearing housings beyond these standard types. Our engineers can help you select the perfect housing for your specific application or develop custom solutions.