Bearing 799A/792 Timken

Tapered roller bearings 799A/792

Bearing number : 799A/792

Size mm : 130.175x206.375x47.625

Brand : Timken

Bore Diameter mm : 130,175

Outer Diameter mm : 206,375

Width mm : 47,625

Bearing dimensions and specification in brand catalogue :

d - 130,175 mm

D - 206,375 mm

T - 47,625 mm

B - 47,625 mm

C - 34,925 mm

R - 3,6 mm

r - 3,3 mm

a - -1,8 mm

Da - 198 mm

db - 148 mm

da - 142 mm

Db - 186 mm

Aa - 5,3 mm

Ab - 2,8 mm

Weight - 5,64 Kg

Basic static load rating C0 - 593 kN

Factor G1 - 326,4

Factor G2 - 62

Factor Cg - 0,0358

Factor K - 1,27

Basic dynamic load rating C90 - 90,8

Basic dynamic load rating Ca90 - 71,3

Basic dynamic load rating C1 - 350 kN

Calculation factor e - 0,46

Calculation factor Y - 1,31

Bearing 799A/792 Timken Shielded bearings have a storage life of five years and a further two years operational life following installation. Wash all bearing parts with a noncontaminating solvent. Lightly pack the bearings with grease applying a 33% fill by volume into the bearing and housings. Where Bearing 799A/792 Timken space heaters are fitted, and the storage environment has wide humi dity and temperature variations, it is strongly recommended they be energised. Warnings should be placed on the Bearing 799A/792 Timken to make operatives aware of the live heaters Supplies are normally 220-240 volt single phase, from a 380-415 volt three phase supply. See terminal box lid for details.

Bearing 799A/792 Timken Shielded bearings have a storage life of five years and a further two years operational life following installation. Wash all bearing parts with a noncontaminating solvent. Lightly pack the bearings with grease applying a 33% fill by volume into the bearing and housings. Where Bearing 799A/792 Timken space heaters are fitted, and the storage environment has wide humi dity and temperature variations, it is strongly recommended they be energised. Warnings should be placed on the Bearing 799A/792 Timken to make operatives aware of the live heaters Supplies are normally 220-240 volt single phase, from a 380-415 volt three phase supply. See terminal box lid for details.

Insulation resistance During extended storage a three monthly insulation test is recommended to avoid possible lengthy drying out periods when installing Bearing 799A/792 Timken. Use a 500 volt d.c. Megger.The insulation resistance between phases and between the windings and the frame should be checked. The insulation resistance should be maintained above 10 megohm. If a lower reading is measured, use one of the drying out methods recommended on page 14 until an acceptable reading is obtained. If heaters are fitted but not energised, they should be used in future. Wound rotors Ideally, wound Bearing 799A/792 Timken brushes should not be in contact with the slip-rings during storage as there is a risk of corrosion. Brushes should either be lifted off the slip-rings or stored separately. This may not be possible with small Bearing 799A/792 Timken.

Insulation resistance During extended storage a three monthly insulation test is recommended to avoid possible lengthy drying out periods when installing Bearing 799A/792 Timken. Use a 500 volt d.c. Megger.The insulation resistance between phases and between the windings and the frame should be checked. The insulation resistance should be maintained above 10 megohm. If a lower reading is measured, use one of the drying out methods recommended on page 14 until an acceptable reading is obtained. If heaters are fitted but not energised, they should be used in future. Wound rotors Ideally, wound Bearing 799A/792 Timken brushes should not be in contact with the slip-rings during storage as there is a risk of corrosion. Brushes should either be lifted off the slip-rings or stored separately. This may not be possible with small Bearing 799A/792 Timken.