2013年8月6日星期二

KOYO bearings overhaul thrust there is a solution '


Kunshan imported bearing manufacturer  a. Thrust clearance: KOYO bearings thrust thrust clearances meet the design requirements.
b. thrust pad: (a) the thrust pad babbitt layer should be no bodiless, wear, cracks, burning, rolling, brushed, erosion and galvanic corrosion and other defects. Tile kerosene soaked through coloring or check babbitt good combination with the base metal.
(2) Thrust pad surface allowed to exist in the radial grooves or scratches, circumferential grooves or scratches depth should not exceed 0.01mm.
(3) tile work traces the same group should be roughly equal, such as work traces uneven uneven bearing block is said Mingwalang should find out why.
(4) with Hongdan check each individual tile babbitt thrust plate surface and the contact surface of the case, the contact area should not be less than 80%, the same group Wabu thickness deviation should not exceed 0.01mm.
(5) tile back Bearing test machine surface is smooth, no burning, glue and other heavy indentation marks.
(6) The limit pinned reliable, dowel pin holes and no wear. After assembly tile swing freely.
(7) on the thermal element with thrust pads, you should check the thermal element in the tile firmly fixed block case, the temperature leads should not affect the tile flexible swing. Thermistor element and the lead together with tile inspection by the meter, insulation and measuring accuracy corresponds instrument specifications.
c. base ring and block level
(A) level block bearing surface is smooth, no wear, burning, and other heavy indentation marks on the base ring swing flexible and comfortable, do not jam. Stopper pin length suitable fixation with standard block pin holes have sufficient clearance, not the top are compact, not partial wear pin hole.
(2) level of the line of contact between the blocks face each other no indentation, smooth, level block swing freely after assembly.
(3) base ring without buckling deformation, two semi-planing good base ring combines the mouth, with no indentation at the level of the contact block, base ring back KOYO bearings with thrust bearing housing face evenly. Based on the anti-rotation key ring fixed well casing corresponding keyway wear.
d. thrust plate
(1) The thrust disk surface is smooth, the surface roughness Ra is less than 0.8 Zi m, do not allow the radial grooves, the circumferential groove depth should not exceed 0.05mm.
(2) connected by a key thrust plate, extrusion marks key and keyway no keyway through testing and inspection no cracks. Thrust plate and the shaft shoulder and the back face contact female uniform key thrust plate keyway with appropriate side of the gap, and thrust tip clearance fit between the plate and the shaft meet the design requirements. After assembly of the thrust plate face runout less than 0.015mm.
(3) the use of hydraulic thrust removable disk structure should be checked when the thrust plate bore surface contact with the shaft, check the thrust plate face contact with the shaft shoulder circumstances, shall not less than 80%. The surface without burrs, scratches, damage, thrust plate bore and shaft with dimensions not exceeding poor.
(4) along the circumference of the thrust plate thickness deviation does not exceed 0.01mm.
(5) KOYO bearings thrust washers as a transfer gap, should be smooth, error is less than the thickness along the entire circumference 0.01mm.
(6) with the inner and outer slinger appropriate, not loose.
(7) Cleaning KOYO bearings boxes, each oil supply hole to hole with KOYO bearings seat consistent and smooth.

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