1. Roll bearing assembly
(1) assembly standard. Bearing assembly has been completed,Purchase For Bearings to the overall measurement of axial clearance, the control standard for the new bearing 0.45 ~ 0.7 mm, again using bearing special circumstances can be enlarged to 0.45 ~ 0.8 mm. For lock and bearing gland to internal and external pressure, prevent "crawl". Through the increase or decrease in bearing coat gland shim clearance adjustment.
(2) assembly cleaning and inspection. Before each assembly, will and dredging oil bearing, bearing seat is clean, with a high sweep the wind will oil field inner product, keep clear of oil. Check the bearing inner and outer parts, such as rolling element and cage and so on, confirmed rear can be assembled. According to the abrasion of rotation Angle of outer load area, generally around 90 ° rotating at a time. Check o-ring, such as lip seal parts, make sure without damage and the elastic is normal. Check bearing gland and lip seal contact surface roughness and wear parts, require a smooth surface, no defects, the wear degree of < < 1.2 mm, guarantee the normal work of the lip seal quantity and normal (30% ~ 40%).
(3) before assembly, check the bearing inner hole wear, including absolute size and cylindricity. Phi 600 mm inner hole diameter than standard 0.35 mm, 560 mm, 450 mm inner hole diameter than standard 0.3 mm, phi 380 inner hole diameter than standard 0.2 mm, shall not be put into use. Four kinds of bearing inner hole diameter and minimum diameter greater than 0.2 ~ 0.3 mm, shall not be put into use.
(4) before assembly, check the big roll roll neck bearing wear, phi 560 mm roll size is less than the standard 0.5 mm, IP450mm roll size is less than the standard 0.4 mm, 380 mm roll size is less than the standard 0.3 mm, shall not be put into use. Phi 380 mm can adopt the method of add sealing glue are remedy).
(1) assembly standard. Bearing assembly has been completed,Purchase For Bearings to the overall measurement of axial clearance, the control standard for the new bearing 0.45 ~ 0.7 mm, again using bearing special circumstances can be enlarged to 0.45 ~ 0.8 mm. For lock and bearing gland to internal and external pressure, prevent "crawl". Through the increase or decrease in bearing coat gland shim clearance adjustment.
(2) assembly cleaning and inspection. Before each assembly, will and dredging oil bearing, bearing seat is clean, with a high sweep the wind will oil field inner product, keep clear of oil. Check the bearing inner and outer parts, such as rolling element and cage and so on, confirmed rear can be assembled. According to the abrasion of rotation Angle of outer load area, generally around 90 ° rotating at a time. Check o-ring, such as lip seal parts, make sure without damage and the elastic is normal. Check bearing gland and lip seal contact surface roughness and wear parts, require a smooth surface, no defects, the wear degree of < < 1.2 mm, guarantee the normal work of the lip seal quantity and normal (30% ~ 40%).
(3) before assembly, check the bearing inner hole wear, including absolute size and cylindricity. Phi 600 mm inner hole diameter than standard 0.35 mm, 560 mm, 450 mm inner hole diameter than standard 0.3 mm, phi 380 inner hole diameter than standard 0.2 mm, shall not be put into use. Four kinds of bearing inner hole diameter and minimum diameter greater than 0.2 ~ 0.3 mm, shall not be put into use.
(4) before assembly, check the big roll roll neck bearing wear, phi 560 mm roll size is less than the standard 0.5 mm, IP450mm roll size is less than the standard 0.4 mm, 380 mm roll size is less than the standard 0.3 mm, shall not be put into use. Phi 380 mm can adopt the method of add sealing glue are remedy).
