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Programme The complete FAG bearing unitsVRE3 are available in the designs A, B, C, D, E and F with shaft dia- meters ranging from 25 to 120 mm. In addition, the following parts are available separately:? Housings VR with covers, sealsand fastening elements? Shafts VRW with fastening elements? Standard rolling bearings Material The housing is made of grey-castiron, material no. 0.6027, the cov- ers and grease valves may be made of the same material or of material no. 1.0035. The shaft is made of steel, material no. 1.0050.07. Design F is suitable where mainlyradial loads and high speeds have to be accommodated. It can ac- commodate axial loads from one side (away from the spring).The maximum operating tempera-ture which is permissible for all designs is 100°C. Design D Design E is suitable for high radial loads from both sides as well as axial loads from both direc- tions. is suitable for axial loadsfrom both directions. Design C is suitable for high radialloads from one side. High axial loads can be accommodated from both directions. Design B is suitable for high radialloads from one side. Axial loads can be accommodated only in one direction. Operative ranges of the designs The Design A is suitable wheremainly radial loads and high speeds have to be accommodated. It can accommodate axial loads from both sides (not alternating).

FAG BEARING UNITS FOR FANS SERIES VRE3 - 4919 PROGRAMME MATERIAL OPERATIVE RANGES SEALING MARKING

Marking A projection at the housing bodyidentifies: ? the position of the cylindricalroller bearing in the case of de- sign B ? the position of the floating bear-ing for designs C, D and E? the position of the ondularwasher for design FThe position of the ondular washer is also marked on the shaft VRW..F. Sealing The seals of the FAG bearing unitsVRE3 prevent the penetration of contaminants as well as the escape of the lubricant. Friction losses are low. The sealing system consists of felt rings in the grooves of both covers as well as two externally ap- plied V-rings made of NBR. For cir- cumferential speeds > 8 m/s, the V-rings have to be supported axial- ly. At speeds from 15 m/s upwards, the sealing lip lifts off and the V-ring then acts as a flinger ring. Sealing for designs A, B and FSealing for designs C, D and E
FAG·4