Shanghai Unico Industry Co., Limited / 2022-06-08
=== Base Info ===
=== Description ===
Frequency Bands
Low Band
Medium Band
High Band
Frequency Range
50-300HZ
300-1800HZ
1800-10000HZ
Nide team could manufacture ball bearing as per customer's drawing and samples. If customer only has samples, we could also design drawing for our customer. We also provide customized service.
Furthermore, the machine electronically translates these signals by a heterodyning process, making them audible, so that inspectors can hear these sounds from the machine speaker and see them as intensity increments on a meter. By this way, testing results also enable the determination of the likely cause of the bearing irregularity. NIDE is making 100% such noise and vibration testing before every single bearing leaves the factory. Also, NIDE has recently significantly improved design of deep groove ball bearings, to further reduce noise and vibration levels.
Customers need to pay attention when coming across the following conditions
Type1: Self-Generated Vibration
Description: Vibration generated from the bearing itself when it is in the rotating condition
Cause: Variations of circular form in the bearing balls and raceway
Countermeasures: Can not be avoided, but could reduce the vibration level by selecting the proper clearance due to the application.
Type2: Vibration Arising from Exposure to External
Description: Disturbed noises occur with the performance degrades of bearings in modes known as wear oxidation or corrosion fretting.
Cause: The contaminated surrounding environment affects bearing. Loaded bearing operate without sufficient lubrication.
Countermeasures: These conditions can be relieved by properly designed isolation supports and adequate lubrication.
Type3: Vibration from Mis-alignment
Description: Not well-aligned bearings make noise when they are rotating.
Cause: Bearings are not well aligned on the shafts or houses during installation. The shafts and houses are not accurate.
Countermeasures: Good alignment methods and special alignment tools to reduce vibration. Applying hight accuracy shafts and houses.
Type4: Local Damage Vibration
Description: The small damaged sections on the raceways and rolling elements generate a specific vibration frequency.
Cause: Mishandling or incorrect mounting.
Countermeasures: Applying correct mounting methods and mechanical tools such as fitting tools, applying induction heaters with time control and pre-set temperature mode.
Information needed for ball bearing inquiry
It will be better if customer could send us detailed drawing including below information.
1.Ball bearing model number
2. Ball bearing dimension
3. Ball bearing application
4. Required quantity
5. Other technical requirement.
Q: Are you trading company or manufacturer ?
A:We are a manufacturer
Q: Do you provide samples ? is it free or extra ?
A:There are many kinds of products in our company. Samples should be sent according to the types of products and negotiated with customers.
Q. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.
Q. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery
Q: How do you make our business long-term and good relationship?
1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.
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