marine crane bearing Needle roller bearings sound characterize CAUSE

Ye - ye loud rattle sound quality does not vary with changes in rotation speed changes (dust / foreign body) rotation speed of sound changes with the change (scratch) dust / foreign body orbital plane, ball, roller surface rough track surfaces, ball, roller surface scratches

Bared small bearings track surface, ball, roller wind power bearing‍ surface roughness

Bared - bared it off, and there is regular contact occurs with the ring section in contact with the holder and closures

Didi roar loud whining sound velocity changes due to rotation, size, height are changed. With specific speed rotation and the sound becomes larger. There is also an alarm or beep when approximate. Resonance, with the bad (bad shape axis) orbit orbital plane surface deformation, ball, roller bellows (large bearings as a mild tone, then normal)

Crunching feeling when the track surface scratches manually rotate the (rules) ball, roller scratches (irregular) dust / foreign body, the track surface deformation (part of the gap is negative)

When large bearing high-speed continuous rumbling sound track surface small bearings, ball, roller surface scratches

Woo - Om - electromagnetic sound instantly Thin section bearings‍ stops the motor when power off

Squeak squeak la la irregular occurrence (non-rotating speed variation and change), mainly for small bearings mixed with dust / foreign body

Jingle jingle tapered roller bearings and high-speed continuous tone rule large bearing small bearing retainer as compared with normal voice was clear and maintain good internal abrasion due to insufficient lubrication grease oil at low temperatures, such as discomfort → soft, insufficient load bearing operation.

Hey friends when the low-speed crash was more pronounced at high speed continuous tone maintain sound internal shocks, lack of lubrication. After reducing the internal clearance or preload different sound disappears. If so, then all of the roller, the roller occurs between the sub-impact sound.

Bang Bang loud impact sound low speed large metal thin large bearing (TTB) and so on. Torn rotator wheel deformation squeaky sound track

Bang bang sound cylindrical roller bearings are slewing ring bearings‍ mainly due to the rotation speed of change, you can hear the sound of large metal sound. After supplement lubricants, and sometimes stops. Lubricants too thick radial internal clearance is too large enough lubricant.

Sound bite sound  of metal between the roller bearing roller and rib bites inside the gap is too little lubricant shortage

Bared it sounds irregular bearing lubricant occurred in the small bubble burst tone

Jenna Jenna snapped snapped squeaky irregular mounting surface with slip ring key part of the squeak squeak sound, etc.

Sound pressure is too large orbital plane, roller ball surface roughness due to the friction surface of the track, rollers, ball deformation due to internal friction and the gap is too big.‍