Analysis on Maintenance and Repair Methods of SKF Rod end Joint Bearing
Analysis on Maintenance and Repair Methods of SKF Rod end Joint Bearing
2022年3月26日
INA Bearing Speed Vibration Solving Skills
INA Bearing Speed Vibration Solving Skills
2022年3月27日

How to Use NTN Bearing Correctly to Prevent Damage

  • The installation space of NTN bearing can be accommodated in the bearing installation space. Because the rigidity and strength of the shaft are paid attention to when designing the shaft system, the shaft diameter, i.e. the inner diameter of the bearing, is generally determined first. However, rolling bearings have a variety of size series and types, and the appropriate bearing type should be selected from them.
  • Load the size, direction and nature of the bearing load [the load capacity of the bearing is expressed by the basic rated load, and its value is contained in the NTN bearing size table] the bearing load is rich in changes, such as the size of the load, whether there is only radial load, whether the axial load is unidirectional or bidirectional, the degree of vibration or impact, etc. 
  • After considering these factors, we can choose the appropriate bearing type. Generally speaking, the radial load capacity of bearings with the same inner diameter increases in the following order: deep groove ball bearing < angular contact ball bearing < cylindrical roller bearing < tapered roller bearing < self-aligning roller bearing
  • The bearing type whose speed can adapt to the mechanical speed [the limit value benchmark of bearing speed is expressed by the limit speed, and its value is contained in the NTN bearing size table] the limit speed of the bearing is not only taken from the bearing type, but also limited to the bearing size, cage type, accuracy grade, load conditions and lubrication mode. 
  • Therefore, these factors must be considered in the selection. The following bearings are mostly used for high-speed rotation: deep groove ball bearings, angular contact ball bearings and cylindrical roller bearings
  • Rotation accuracy bearing type with required rotation accuracy NTN bearing dimensional accuracy and rotation accuracy have been standardized by GB according to bearing type] machine tool spindle, gas turbine and control machine require high rotation accuracy, high speed and low friction respectively. At this time, bearings with accuracy above grade 5 should be used. The following bearings are generally used: deep groove ball bearing, contact ball bearing and cylindrical roller bearing
  • A. Improper operation:How to Use NTN Bearing Correctly to Prevent Damage
  • Improper installation, operation or removal may cause deformation or damage to the cage
  • Precautions: use appropriate operation, installation and disassembly tools
  • B. Insufficient lubrication:
  • Insufficient or improper lubrication may result in component scratch or serious bearing deformation
  • Preventive measures: improve the lubrication system and supplement or replace the lubricant regularly and properly
  • C. Rust and corrosion:How to Use NTN Bearing Correctly to Prevent Damage
  • Contact with water may cause corrosion and rust of bearing elements. The corroded NTN bearing may peel off during operation
  • Preventive measures: check the seal regularly to ensure good sealing effect and store the bearing correctly
  • D. Current:How to Use NTN Bearing Correctly to Prevent Damage
  • Energizing the bearing while it is rotating may cause grooves or nicks. When the NTN bearing is stationary, improper grounding of electrical operation will cause slight burns
  • Precautions: before welding components other than NTN bearings, reduce or avoid current through the bearing through appropriate grounding connection

 

 

How to Use NTN Bearing Correctly to Prevent Damage

External materials:How to Use NTN Bearing Correctly to Prevent Damage

  • Abrasive particle contamination and debris intrusion can cause wear, scratches and dents on the working surface of NTN bearings
  • Lubricant, particle intrusion prevention, inspection and debris removal
  • F. Eccentricity:
  • Eccentricity, inclination or excessive load may lead to geometric stress concentration or surface spalling
  • Preventive measures: accurately process the bearing seat and shoulder
  • For the periodic maintenance and operation of NTN bearing equipment and the replacement of peripheral parts, when the search and inspection of the disassembled bearing is suspended, it is necessary to judge whether the secondary bearing parts can be reused and record the good or bad application conditions.How to Use NTN Bearing Correctly to Prevent Damage
How to Use NTN Bearing Correctly to Prevent Damage

NTN Bearing

In Spherical Roller Bearings, the raceway of outer ring is designed to have a spherical profile, whose centre coincides with the bearing’s centre point. 

This type of bearing is self-aligning type, hence can be used for applications where a misalignment of shaft may arise either due to an erroneous mounting or due to shaft deflections. The outer ring generally has lubrication holes and grooves. These bearings are suitable for very high radial impact load applications, and a moderately high level of bi-directional axial load.

NTN Bearing Appearance Inspection Items And Selection Considerations

Cooperation Brands

NTN Deep Groove Ball Bearings

NTN Angular Contact Ball Bearing

NTN Pillow Block Bearings

NTN Self-aligning Ball Bearing

NTN Tapered Roller Bearings

NTN Needle Roller Bearing

NTN Cylinder Roller Bearing

NTN Thrust Ball Bearing

More Bearings

NTN Spherical Roller Bearing

NTN Thrust Roller Bearing

Product Description of NTN Bearing

Application of NTN Bearing

1.aerospace
2.Cars and heavy trucks-OEM
3.Aftermarket
4.Cement plant
5.Heavy aftermarket
6.Industry Distribution
7.Wind energy

1.rail
2.Construction Equipment
3.Machine Tool Bearing
4.Agriculture Bearing
5.steel industry
6.General industrial solutions
7.food
8.Self-driving car
9.robot
10.Industrial Pump
11.Material handling
12.Textile machinery

Automotive-industry

Motor field

Motor field

Medical equipment

Medical equipment

Wind power

Wind power

Mechanical

Mechanical

Instrument

Instrument

Shipping & Package of NTN Bearing

Shipping port: Qingdao/Tianjin
Supply Ability: 100,000 pieces per month
Package:

  1. Plastic bag + single box + carton + plywood pallet
  2. Neutral industrial packaging + neutral carton packaging + pallet
  3. According to customer requirements
Package
Package

Why choose us

  1. Sample requirements: Contact us via email or trade manager, we will send samples according to your requirements.
  2.  World-class bearings: We provide customers with world-class quality domestically produced bearings.
  3. OEM or non-support bearings: As we have a wealth of knowledge and connections in the industry, we can easily meet any requirements for non-standard bearings.
  4. Outstanding quality of genuine products: The company has been proving that it provides 100% quality products with genuine intentions.
  5.  After-sales service and technical assistance: The company provides after-sales service and technical assistance according to customer requirements and needs.
  6. Fast delivery: The company provides on-time delivery through its streamlined supply chain.
  7.  Cost-saving: We provide long-life, anti-vibration, high-reliability bearings with high quality and better performance. This increases cost savings.
  8.  Answer customers’ questions in time: We believe that if customers are satisfied, it proves our value.
    Customers always get fast support.

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FAQ

Due to their internal design, ball bearings cannot usually be disassembled down to the component level; therefore, they cannot usually be refurbished.

Solid base shells are manufactured without cavities and fillers; they are stronger than hollow bases, and there are no traps for bacteria and fungi to grow. In the thermoplastic shell, the sturdy base will not break under steam or high-pressure washing. The hollow base saves material and weight to reduce costs. Some people use epoxy resin to backfill the hollow base to eliminate the trap of bacteria breeding, but this will not increase the strength, will cause the installation surface to be uneven, and water will seep between the shell and the filling material, causing cracking.

Use particularly thermally stable bearing rings, larger internal clearance (C4), specially selected lubricants that will not decompose at high temperatures, and zinc anodized flinger. There are two basic versions of our high temperature bearings. The suffix “C4HR5” represents the bearing that can withstand 400°F, and the suffix “C4HR23” represents the bearing that can withstand 450°F.

For critical applications such as pulp and paper processing, printing and packaging, material tearing can cause expensive downtime due to excessive torque and vibration.

The two biggest factors affecting the starting and running torque of the bearing are the seal design and lubricant selection. The shaft and bearing seat fit, component accuracy and surface finish, and retainer design also have some influence.

In higher speed applications, non-contact sealing devices are usually required to minimize operating torque and heat generation, so oil baffle rings and secondary sealing devices are usually required. Flowing oil lubrication systems are usually the best solution.

After proper installation, most seated bearings only need to be relubricated regularly with a small amount of grease and checked to ensure that they operate at low temperatures, quietness, and sufficient accuracy.

This depends on many factors, such as the application’s load conditions, operating speed, duty cycle, temperature, and operating environment. The technical information section of this website provides some basic information. Our engineers can help you determine more specific theoretical life calculations.

When noise and/or operating temperature increase or operating accuracy decreases, bearings should be replaced.

Lubricant of choice
Lubrication joint type or location
Sealing materials and design options
Dimensions, suitable for housing or insert
Fixing screw options
Paint the shell in any color

Too little or too much lubricant
Incorrect lubricant type
Poor bearing installation
Improper internal clearance
Excessive load and/or speed
Extreme temperature
Pollution
Movement between mounting surfaces

The noise emitted by the bearing may be caused by a combination of one or more factors, such as insufficient working clearance, excessive working clearance, changes in working clearance due to temperature, damage to the contact area, contamination, inappropriate lubricants or The raceway is damaged.

Lubricants have five basic functions for bearings:

Reduce friction
Reduce wear
Reduce temperature rise
Minimize corrosion
Seal contaminants

We do not recommend mixing grease. Mixing incompatible greases will cause the mixture to harden, preventing it from releasing any oil. Mixing incompatible greases can also soften the mixture, which releases all the oil. In either case, the mixture will not be able to properly lubricate the bearing. We strongly recommend using the same type of grease originally provided with the bearing.