- Metric bearings, bearing housings and bearing pedestals
- Inch bearing, bearing housing and bearing pedestal
- Compatible bearing pedestal
- Metric round flange bearing
- Installation of round flange bearing with inch size
- Metric dimensioning method - Blue bearings
- Inch dimension method blue bearing
- Metric suspension bearing
- Inch size suspension bearing
- Three threaded suspension bearing
- Wound bearing
- Pull rod bearing
- Bearings with inside diameters greater than 600 mm /24 inches
Flange-Mounted Unit
Flanges provide a simple means of mounting ZWA split roller bearings against a vertical or horizontal face or bulkhead
The bearings are housed in standard ZWA cartridges (refer to page 515)
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 following pages are the standard sizes that are manufactured regularly. as with other ZWA housings, particulars of alternative versions or sizes not listed can be supplied on request.
he most common type of flange is the round flange as illustrated below and listed on pages 576 to 585. these flanges are manufactured from grey iron as standard. ductile iron and steel flanges are also available.
Round Flange
For bearings from 45mm to 85mm/111/16 "到37/16"shaft size. a more compact alternative is the square (`DF line` ) flange as illustrated below and listed on pages 590 to 591.
Square flanges are manufactured from ductile iron as standard and are ideal for use on steel frames or skid mounted equipment.
DF Flange
a further option, where it is desired for the bearing centre to be closer to the mounting face, is the`flat flange`.
Flat Flang
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 (see page 469).
Loads And Mountings
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 20% 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.
