NACHI Bearing
What is NACHI Bearing?
NACHI has been striving to develop rolling bearings of the highest level. Every production step is carried out and controlled in NACHI’s own factory, from steel mill and heat treatment to parts machining and bearing assembly. Today, NACHI offers a wide range of ball bearings, roller bearings, spherical roller bearings and precision roller bearings for the general machinery, agricultural, transmission, fluid, aerospace and demanding automotive industries.
Product Types of NACHI Bearing
NACHI Deep Groove Ball Bearings
Deep groove ball bearings are the most popular of all ball bearing types as they are available with a wide range of seals, guards and stop ring arrangements. The bearing collar grooves are circular and slightly larger than the radius of the steel balls. The balls contact the raceway points (elliptical contact under load). Inner ring shoulders are the same height (as the outer ring shoulders). Deep groove ball bearings can withstand radial, axial or combined loads and due to their simple design this type of bearing can be produced to provide high running accuracy and high speed operation.
NACHI Self-aligning Ball Bearings
Self-aligning ball bearings have an inner ring and ball assembly contained within the outer ring, which has a spherical raceway for self-alignment. Self-aligning ball bearings are particularly suitable for applications where misalignment occurs due to incorrect mounting or shaft deflection and are usually used in combination with pillow blocks. The cage is made of pressed steel or polyamide resin. Due to the low axial support of the rolling elements by the outer raceway, these bearings can only be used for light axial loads.
NACHI Angular Contact Ball Bearings
Angular contact ball bearings mainly have single row angular contact ball bearings, double row angular contact ball bearings, combined angular contact ball bearings three. Angular contact ball bearings can simultaneously withstand radial load and axial load. It can work at a higher speed. The larger the contact angle, the higher the axial load carrying capacity. Contact angle for the radial plane of the ball and raceway contact point line and bearing axis of the vertical line between the angle. High precision and high speed bearings usually take 15 degrees contact angle. Under the action of axial force, the contact angle will increase.
NACHI Thrust Ball Bearings
Thrust ball bearing can only bear axial load. The bearing collar mounted on the shaft is called the shaft collar and the one mounted on the housing is called the seat collar. Both washers contain recesses for the ball. There are two types of thrust ball bearings: single type thrust ball bearings which can only withstand axial loads in one direction and double type thrust ball bearings which can withstand loads in both directions.
NACHI Ball Bearing Units
Ball bearing units provide a convenient method of applying highly reliable rolling contact bearings to applications without the need to manufacture bearing housings.
Typically, ball bearing units are characterised by the following features: self-alignment capability; sealing; easy mounting and dismounting; interchangeability with foreign manufacturing units; and a wide range of types suitable for the application. In addition NACHI ball bearing units have the advantages of ease of use and high reliability.
NACHI Cylindrical Roller Bearings
The structure of cylindrical roller bearings is the simplest of all radial roller bearings, whose inner ring, outer ring and rollers are in line contact, with a large radial load capacity. They are mainly used for high speed and high precision applications such as; spindle supports for lathes, milling machines and machining centres.
Various Cylindrical roller bearing configurations are:
- N,NJ,NF,NU,RNU: integral ribs (flanges)
- NH,NP;NUP;NUH: integral and loose ribs
- NN,NNU: double-row bearings
NACHI Tapered Roller Bearings
Tapered roller bearings can be divided into the following components: outer ring, inner ring and roller assembly. In these bearings the inner and outer ring raceways and rollers are tapered so that the surface plane of the raceway intersects the roller axis at one point. The inseparable inner ring and roller assembly is called the “taper” and the outer ring is called the “cup”. The internal clearance is established during mounting by the axial positioning of the cone in relation to the cup. This bearing type can be used in preloaded situations to achieve higher stiffness and better shaft running accuracy.
NACHI Spherical Roller Bearings
NACHI double row spherical roller bearings are available with bore diameters ranging from 25 mm to over 1000 mm. This bearing type can withstand medium levels of axial loads in both directions and is self-aligning. Spherical roller bearings are used in paper mill equipment, rolling mills, rolling stock, vibrating screens and general industrial machinery. Spherical roller bearings can be easily mounted and dismounted by using tapered bore bearings in combination with tapered journals, tighteners or withdrawal sleeves. Tapered bore bearings can also be used to precisely set the internal clearance.
NACHI Spherical Roller Thrust Bearing
Spherical roller thrust bearing and spherical roller bearing is roughly the same, seat ring raceway surface is with the bearing centre axis on the same point as the centre of the spherical surface, this type of bearing roller for the spherical type, therefore, has automatic adjusting function, the coaxiality and shaft deflection is not very sensitive. Spherical roller thrust bearings are commonly used in injection moulding machines, crane hooks and other large machinery. The cage is made of machined high strength brass or pressed steel.
Application Of NACHI Bearing
Packaging Of NACHI Bearing
Shipping port: Qingdao/Tianjin
Supply Ability: 100,000 pieces per month
Package：
- Plastic bag + single box + carton + plywood pallet
- Neutral industrial packaging + neutral carton packaging + pallet
- According to customer requirements
Factory Of NACHI Bearing
The company adopts warehousing supply, has a large warehouse and sufficient spot inventory, and has an extensive marketing network. We can not only provide customers with high-quality products, reasonable prices, excellent pre-sales and after-sales services and professional technical consultation, but also Having a group of experienced sales and after-sales engineers can help your company eliminate worries in terms of equipment loading and unloading maintenance, maintenance testing, and technical consultation.
FAQ Of NACHI Bearing
Due to their internal design, ball bearings cannot usually be disassembled down to the component level; therefore, they cannot usually be refurbished.
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.
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.