Gamet Bearings | Overview -Click to Download |
Preparation and Mounting Information
After inspection Gamet's precision tapered roller bearings are treated with a corrosion preventative oil, (except pre-greased bearings). Initial packaging is heavy gauge PVC bags, which are heat sealed, and boxed. Precision Tapered Roller Bearings can be stored for long periods providing packaging is not damages and the storage area is dry and not subject to extremes of temperature.
Mounting should be undertaken in clean, dry, dust free conditions away from metalworking or other operations producing swarf or dust.
It is recommended that drawings and instructions be studied to determine the correct order of assembly. All necessary parts, tools and equipment should be available before commencing.
Each component of the spindle arrangement (housing, shaft, etc.) must be carefully cleaned and checked for burrs. Dimensional and form accuracy of all components in contact with the bearings should be checked as optimum bearing performance can only be achieved if the prescribed tolerances are adhered to.
|
Precision Tapered Roller Bearings should remain in the original packaging for as long as possible prior to fitting to prevent the risk of contamination.
Whenever possible, roller bearings should be mounted onto the shaft in vertical position. It is very important that the correct method of mounting is chosen and that suitable equipment is used.
The inner races (cones) of the precision tapered roller bearings must be pre-heated to expand sufficiently to assist mounting on shaft. Never attempt to fit cold as the amount of interference between cones and shaft will prevent sliding and any direct wear will create damage to rolling elements and raceways. Heating can be achieved using induction heaters, ideal for grease lubricated bearings or oil baths suitable for oil-lubricated bearings. Under no circumstances should a pre-greased roller bearing be heated by submerging in oil, as contamination of grease will occur. The temperature required to sufficiently expand cones to allow reasonable mounting time varies depending upon size and section, but 70?C will suffice for the majority of applications. Care must be taken when locking bearings to ensure all rolling elements are seated properly; this is achieved by rotating at period intervals during locking. For specific advice contact GMN Bearings.
Component Parts of a Gamet Tapered Roller Bearing
Gamet bearings consist of four basic components - the inner race (cone), the outer race (cup), tapered rollers and cage. The cone, rollers and cage form an assembly, which is separable from the cup.
Plain Cup -
The basic single row bearing can be used in light to medium loaded applications, and provides a simple, cost-effective arrangement.
Flanged Cup (C Type)
The flanged cup version enables through boring of the housing for simplicity and accuracy.
Constant Pre-load (P-Type)
This single row bearing has an extended outer ring, housing a number of springs. It is mounted in conjunction with either a single or double row bearing. As the outer race is free to slide in the housing, the spring force ensures that a constant bearing system preload is maintained despite thermal expansion due to varying temperature conditions.
Plain Cup (G-Type)
Double row bearings offer nearly twice the capacity of the equivalent single row bearing, and are therefore used in more heavily loaded applications.
Flanged Cup (H-Type)
Double row bearings offer nearly twice the capacity of the equivalent single row bearing, and are therefore used in more heavily loaded applications.
|
Gamet Bearings
Constant Pre-load
Flanged Cup Type H
|
