Jingnai Machinery is a scientific and technological bearing enterprise integrating R&D, production and trade. The company is located in Liaocheng city, Shandong province. We can provide quality grade P0(Z1V1), P6(Z2V2), P5(Z3V3 ). The company has gained ISO9001:2008 and IATF16949:2016 system certification. We always produce high precision and high performance bearings. At present, our bearings have been matched with many domestic and foreign OEM customers, and exported to European Union, South America, Southeast Asia, the Middle East and other 30 countries.
In order to improve the popularity, our company attend many exhibition around the world annually, and we continue to participate in each session of shanghai international bearing professional exhibition, china import and export commodities fair, Beijing international automobile exhibition, shanghai Frankfurt auto parts exhibition etc.
Welcome to your inquiry and order. Thanks!
From December 09-12, Our company will attend the China International Bearing Industry Exhibition in Shanghai , Booth No is 3HD094, welcome new and old customers to visit and negotiate.
From December 2th to December 5th in 2020, our company participate in Automechanika Shanghai，Booth No. 1.1H91,welcome new and old customers to visit and negotiate.
From November 24th to 27th in 2020 our company will participate in Bauma CHINA 2020 ,Booth No is N3686.welcome new and old customers to visit and negotiate.
From December 3th to December 6th in 2019, our company participate in Automechanika Shanghai，Booth No. 1H91& 8.1A30 welcome new and old customers to visit and negotiate.
November 9-12, 2019 We will Tehran Permanent Exibitions Fairground, booth No. is 3844/2, welcome new and old customers to visit and negotiate.
November 5-7, 2019, We will attend AAPEX SHOW (Las Vegas, NV), booth number is 8431-9, welcome new and old customers to visit and negotiate.
Oct 23，2019—Oct 26 Oct, 2019 , our company attened PTC ASIA Shanghai 2019 Exhibition.
Our booth No: D4-5, HALL E6. welcome new and old customers to visit and negotiate.
From October 15th to 19th in 2019 our company will participate in the 126th session of the Canton Fair ,Booth No: 8.0J14&6.0A17 .welcome new and old customers to visit and negotiate.
We have attended Moscow International Motor Show on 26th — 29th, Aug, 2019, our booth No.: HALL8.3 G231-1. Welcome new and old customers to visit and negotiate
We have attended PHILIPPINES AUTO PARTS during Jul 24th, 2019 – Jul 26th, 2019, and our booth No.: 403. Welcome new and old customers to visit and negotiate.
From June 10th to 12th, 2019, our company will participate in the Frankfurt auto parts exhibition in dubai. The booth number is sa-j38.welcome new and old customers to visit and negotiate.
April 23-27, 2019, our company will participate in the Trade Fair for Autoparts in Brazil (Sao Paulo). Booth No.: P156 . Welcome new and old customers to visit and negotiate.
From April 15th to 19th in 2019 our company will participate in the 125th session of the Canton Fair ,Booth No is7.1D46 .welcome new and old customers to visit and negotiate.
Bearings are critical components in any piece of rotating machinery. Their primary function is to support the rotating shaft whilst reducing friction to facilitate smooth motion.
Due to the vital role that bearings play within machinery, it’s important to regularly inspect your bearings for any issues, whilst ensuring that maintenance is carried out on schedule.
Five signs that you should replace your bearing before it’s too late
If you notice that your bearing has suddenly become noisy, you’re probably wondering what’s going on. Why is your bearing making a noise and what should you do about it?
Read on to discover the causes of a noisy bearing and the next steps that you should take.
What causes a bearing to be noisy?
If your bearing has suddenly started making a noise during operation, there is a problem with your bearing. The excess noise that you’re hearing is created when the raceways of the bearing have become damaged, causing the rolling elements to bounce or rattle during rotation.
There are many different causes of a noisy bearing but the most common is contamination. It could be that contamination occurred during the installation of the bearing, with particles remaining on the raceway which caused damage when the bearing was first operated.
Shields and seals can become damaged during lubrication of the bearing, rendering them ineffective in protecting against the ingress of contamination – a particular problem in highly contaminated environments.
Contamination is also common during the lubrication process. Foreign particles may become stuck to the end of the grease gun and enter the machinery during relubrication.
These foreign particles make it into the raceways of the bearing. When the bearing begins operation, the particle will start to damage the raceway of the bearing, causing the rolling elements to bounce or rattle and creating the noise that you are hearing.
What should you do if your bearing starts making noise?
The noise coming from your bearing may sound like a whistling, rattling or growling. Unfortunately, by the time you hear this noise, your bearing has failed and the only solution is to replace the bearing as soon as possible.
You may find that adding grease to your bearing quietens the noise. That means it’s fixed the issue, right?
Unfortunately, this isn’t the case. Adding grease once your bearing has started to make a noise will only mask the issue. It’s like putting a plaster on a stab wound – it needs urgent attention and the noise will only come back.
You can use condition monitoring technologies such as vibration analysis or thermography to predict when the bearing is likely to fail catastrophically and to calculate the latest point at which you can safely replace the bearing.
*How to prevent bearing failure
It can be tempting to just replace the failed bearing and carry on with your everyday business operations. However, it’s important to not just replace the bearing but to also look for the root cause of the failure. Performing root cause analysis will identify the underlying issue, allowing you to put mitigating measures in place to prevent the same issue from reoccurring.
Making sure you’re using the most effective sealing solution for your operating conditions and checking the condition of your seals every time you perform maintenance can help to guard against the ingress of contamination.
It’s also important to make sure you’re using the right fitting tools for your bearings. This will help to prevent damage from occurring during the mounting process.
*Monitor your bearings
Continuously monitoring your bearings gives you the best chance of quickly identifying and addressing potential issues with your bearing. Condition monitoring systems are a great way to keep the health of your machinery under constant review.
At JINGNAI, we supply the SKF range of condition monitoring equipment, from stroboscopes and vibration sensors to full condition monitoring systems which integrate seamlessly with your machinery for remote monitoring.
*Take home message
If your bearing has suddenly become noisy during operation, it has already failed. It may still be able to operate for now but it will be getting closer and closer to catastrophic failure. The most common cause of a noisy bearing is contamination which damages the raceways of the bearing, causing the rolling elements to bounce or rattle.
The only solution to a noisy bearing is to replace the bearing. Applying grease will only mask the issue.
Post time: Mar-04-2021