Questions regarding gears
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The high-speed teeth on a high-speed pump were damaged; the matching gear wasn’t damaged. The maintenance personnel said that if the gear needs to be replaced, then a pair must be replaced. Is this really necessary? Personally, I think there’s no need to change it as long as the parameters remain the same.
It is recommended to replace the gear set, as gears wear out over time during operation. Replacing just one gear is not as effective as using two new gears, as this ensures smoother operation. Proper maintenance of the equipment is essential; otherwise, potential problems may arise
The key lies in the meshing clearance and contact area; as long as these two conditions are met, there will be no problems. If the contact area is insufficient, it can be scraped or ground.
Reply to 1# gaodi913: It is recommended to replace them with a new pair. The ones you say are not damaged are so because visual inspection cannot detect the damage; even if you install gears of the same type, there will be significant differences in the tolerance fit, and it is likely that the gears will break again in little time.
Reply to 1# gaodi913: It is recommended to replace them together. In my opinion, if one of the gears that work in conjunction with it gets damaged, then the other gear will likely be damaged as well, to some extent. The original poster believes that there’s no damage, but this might be based on a visual inspection with the naked eye. If they’re not replaced, problems may arise after some time of use!
It seems this has a lot to do with the skill level of the maintenance personnel. To maintain production stability, it’s better to accept everyone’s suggestions and replace them all!
There’s no need to replace them all; it’s also acceptable to process just one. All that’s required is to accurately measure parameters such as the helix angle modification coefficient of the damaged gear.