SS-316 4 Hole flange bearing housings
Four Hole Flanged Stainless Housing
EXF – 4 hole flanged
Four-bolt square flanged Extreme Bearing housing designed for mounting on flat machine surfaces. Manufactured from rigid cast AISI 316 stainless steel, with configurable bearing inserts and sealing options for a wide range of applications.
View this housing in 3D
Rotate, zoom and measure the stainless steel 316 EXF four-hole flanged unit. Use the toolbar to take measurements.
The perfect match for the EXF 4-hole fanged housing
Every application is unique — and so is every bearing assembly.
Use our Product Chooser to quickly find the right Extreme Bearing unit for your needs.
Like all Extreme Bearing housings, built with AISI 316
Like all Extreme Bearing housings, the EXF 4-Hole Flange model is engineered for demanding environments with durable AISI 316 stainless steel for superior corrosion resistance and reliability. The EXF provides a rigid four-hole flange mounting solution for parallel shaft applications, ideal for gearmotor adapters, conveyor frames, and tank agitator systems.
The 4-bolt square design provides excellent stability
1. Stronger mounting stability
Four bolts hold the housing more securely than two bolts.
Benefits:
- Less vibration
- Reduced movement
- Better resistance to twisting forces
This is important in high-speed or heavy-duty machinery.
2. Better load distribution
The square pattern spreads forces evenly around the shaft.
Compared to a 2-hole flange:
- Lower stress on mounting bolts
- Better support for heavier radial loads
- Improved housing stability
Bearing the unbearable — a look into the world of Extreme Bearing Type EXC applications.
J is the bolt hole pitch circle diameter (mm) — the distance between opposing bolt centres, used when laying out the four mounting holes on the machine face.
| Housing | B (mm) | C (mm) | H2 (mm) | J (mm) | L (mm) | L1 (mm) | N (mm) | T (mm) |
|---|---|---|---|---|---|---|---|---|
| 025 | 25 | 44 | 12 | 70 | 95 | 95 | 12 | 54.6 |
| 030 | 26 | 48 | 12 | 85 | 108 | 108 | 12 | 60 |
| 035 | 28 | 50 | 12 | 92 | 118 | 118 | 12 | 61.1 |
| 040 | 28 | 51 | 12 | 101.5 | 130 | 130 | 14 | 62 |
| 045 | 32 | 57 | 12 | 105 | 137 | 137 | 16 | 69.6 |
| 050 | 34 | 60 | 12 | 111 | 143 | 148 | 18 | 73.6 |
| 055 | 34 | 62 | 14 | 120 | 162 | 162 | 18 | 80.6 |
| 060 | 36 | 66 | 14 | 143 | 175 | 175 | 18 | 79 |
| 065 | 42 | 42 | 20 | 152 | 197 | 197 | 23 | 91.5 |
| 070 | 46 | 77 | 20 | 152 | 193 | 193 | 23 | 104 |
| 075 | 47 | 87 | 24 | 165 | 208 | 208 | 23 | 104.5 |
| 080 | 48 | 84 | 23 | 165 | 208 | 208 | 23 | 104.5 |
| 090 | 52 | 92 | 22 | 187 | 235 | 235 | 23 | 122.5 |
| 100 | 59 | 106 | 29 | 210 | 265 | 265 | 27 | 127.7 |
Load Directions of a 4-Hole Flange Bearing
4-hole flange mounted Extreme Bearing units are designed to handle radial loads and forces acting vertically toward the mounting surface. When radial loads are applied from other directions, the bolt connection to the machine frame becomes the limiting factor and must be checked to ensure the load remains within the permitted limits.
Tensioner stud
The EXF bearing unit is provided with a tensioner stud. This is a unique feature of this type of Extreme Bearing. This feature can be very helpful to design a coveyorbelt
