Cooper Bearings Ltd
- Introduction
- To 75mm
- 80mm to 110mm
- 115mm to 140mm
- 145mm to 155mm
- 160mm to 220mm
- 230mm to 300mm
- 320mm to 400mm
Round Flange Housing
Round flange
Flanges provide a simple means of mounting Cooper split roller bearings against a vertical or horizontal face or bulkhead.
The bearings are housed in standard Cooper cartridges.
The top halves of both flange and cartridge can be lifted for inspection once installed (provided that the shaft can be maintained safely in position).
The sizes listed on the adjacent tabs are the standard sizes that are manufactured regularly. As with other Cooper housings, particulars of alternative versions or sizes not listed can be supplied on request.
The most common type of flange is the round flange as shown on the tabs. These flanges are manufactured from grey iron as standard. Ductile iron and steel flanges are also available.
Flat flange
A further option, where it is desired for the bearing centre to be closer to the mounting face, is the 'flat flange'. A typical application is on electric motors, where the flat flange is used to enclose the end of the motor housing as well as support the bearing.
Although the unit cannot be disassembled in a completely radial direction, by providing a sufficiently large aperture in the mounting face it is still possible to inspect and replace the bearing without disturbing the shaft.
If you wish to specify a flat flange please contact our technical department for details.
Flanges are common between expansion (EX) and fixed (GR) units. Where flat flanges are used on electrical equipment single lipped (GROSL) bearings are often specified.
Load and mounting
The maximum radial load for standard round and square flanges is 26% of the static rating (Cor) of the corresponding roller bearing for 01, 01E and 02 Series bearings, and 20% Cor for 100 Series bearings.
The maximum axial load is 25% of the axial rating (Ca) of the corresponding roller bearing for 01, 01E and 02 Series bearings, and 18% Ca for 100 Series bearings.
Ductile iron or steel flanges should be specified for shock conditions. Particulars are available on request from our technical department.
Standard flanges normally have drilled holes for the mounting bolts, with the outer surface as-cast. It is recommended that flat washers are fitted under the bolt heads. Cast steel flanges usually have drilled holes with spotfacings for the bolt heads.
The rear face of round flanges is recessed for use with a spigot if required.
The bulkhead or support plate on which the flange is mounted must be of adequate strength and rigidity to support the imposed load with little distortion of the flange mounting area.
For vertical shafts bearings and flanges may require modified construction and special seals and lubrication. Please consult our technical department when considering applications with vertical shafts.