Flanged Units
UCF3 Series Square Flange Units (Large Bore)
Larger-bore continuation of the square flange range, matching the UCP3 pillow block's bearing insert size for higher load capacity than UCF2. Used where a flange-mounted shaft's load rating outgrows the standard 02-series units.
Reference dimension diagram — see table below for exact values per size.
Dimensions & Part Numbers
| Shaft Dia. (mm) | Unit Number | L (Flange Width) (mm) | J (Bolt Circle) (mm) | A (Bolt Hole Dia.) (mm) | Bolt Size | Bearing Insert No. |
|---|---|---|---|---|---|---|
| 25 | UCF305 | 110 | 80 | 29 | M14 | UC305 |
| 30 | UCF306 | 125 | 95 | 32 | M14 | UC306 |
| 35 | UCF307 | 135 | 100 | 36 | M16 | UC307 |
| 40 | UCF308 | 150 | 112 | 40 | M16 | UC308 |
| 45 | UCF309 | 160 | 125 | 44 | M16 | UC309 |
| 50 | UCF310 | 175 | 132 | 48 | M20 | UC310 |
| 55 | UCF311 | 185 | 140 | 52 | M20 | UC311 |
Dimensions and part numbers per manufacturer technical catalogue, set-screw locking type.
Request Quote for UCF3Typical Applications
- Higher-load gearbox and motor shaft flange mounting
- Screw conveyors on larger shaft diameters
- Applications sized out of the UCF2 series' load rating
- Medium-to-heavy panel-mounted machinery
Frequently Asked Questions
What sizes are available in the UCF3 series?
UCF3 units are available from 25mm – 55mm bore, as listed in the dimension table below. Each size has its own part number for ordering.
What is the housing material and locking type for UCF3?
UCF3 uses a cast iron housing with set screw locking, sourced from NTN, FAG, SKF, FYH, Asahi, DTC and SLS.
What is UCF3 typically used for?
Common applications include higher-load gearbox and motor shaft flange mounting and screw conveyors on larger shaft diameters, and similar general industrial shaft-support duties.
Need pricing on UCF3 units?
Share your shaft size and quantity — our technical team will confirm availability and pricing within one business day.