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A. thrust clearance
Thrust of FAG bearings thrust clearances meet the design requirements.
B. thrust tile
(1) thrust tile babbit layer should be no light, wear, cracks, Burns, rolling, feathering, erosion and corrosion and other defects. Check tile, stain or soak kerosene, babbit and base metal bonded well.
(2) the thrust pad surface is not allowed along the radial grooves or scratches, circumferential grooves or scratches depth should not exceed 0.01mm.
(3) with the set of traces of tile work should be roughly equal, such as uneven traces the tile bearing does not, should find the cause.
(4) the red lead checks of each individual tile babbit surface contact with the surface of the thrust plate, contact area shall not be less than 80%, with Group w port deviation shall not exceed 0.01mm.
(5) the back bearing the tile surface is smooth, without burning, scuffing and creasing signs of overload.
(6) the limit pin fixed reliable, PIN and PIN holes shall not be worn. After assembling tile swing free.
(7) thrust tile with a heat sensor, heat-sensitive components should be examined within the tile firmly fixed, temperature measurement the leader should not affect the tile, flexible swing. Heat sensors and the leader, together with tile, inspected by a meter, insulation and accuracy of measurement in accordance with instrument specifications.
C. base ring and leveling blocks
(1) standard block load-bearing surface is smooth, no wear, burning, indentation, and other signs of overload, oscillating flexible comfortable within the base ring, do not jam. Latch length appropriate, firmly fixed, and leveling pin hole has sufficient clearance, do not press, not wear pin-hole.
(2) face each other across the line of contact without creasing the standard block, the surface is smooth, after completion of standard Swing free.
(3) the base ring gourds distortion-free, surface well with combination of two base ring, and leveling blocks contact no indentation, the base ring and thrust FAG bearing shells on the back-side surface pressure evenly. Anti-rotation key on the base ring fixed well, corresponding keyways no wear on the shell.
D. thrust plate
(1) the thrust surface polishing, surface roughness Ra value is less than 0.8 m AIDS, radial Groove mark is not allowed, circumferential groove depth should not exceed 0.05mm.
(2) by the thrust of a key join, keys and keyways are no squeeze marks, keyways as flaw detection inspection no crack. Thrust plate uniform contact with the shoulder and back end, key in the thrust plate of the keyway with suitable, side clearance, clearance and thrust plate and co-ordination between axis meets the design requirements. After Assembly of the thrust disc face runout less than 0.015mm.
(3) when using the hydraulic working inside the thrust structure, you should review the thrust plate hole and shaft surface exposure, check the thrust disc face and shoulder exposure, shall not be less than 80%. The surface free of burrs, scratches, damage, thrust plate with the size of the hole and shaft is not super bad.
(4) the thrust disk thickness in circular deviation is less than 0.01mm.
(5) the gap adjustment gasket for a thrust bearing, should be smooth and flat, thickness along the entire week error is less than 0.01mm.
(6) the oil rings inside and outside diameter combined with suitable, not loose.
(7) clean bearing box, the oil supply hole to coincide with FAG bearing oiling holes, smooth.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7217BDF NSK | 85 | 150 | 28 |
| 7217ADF NSK | 85 | 150 | 28 |