NACHI Bearing

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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.

Cooperation Brands

NACHI  Pillow Block Bearings

NACHI  Needle Roller Bearing

NACHI Deep Groove Ball Bearings

NACHI Thrust Ball Bearing

NACHI Tapered Roller Bearings

NACHI Angular Contact Ball Bearing

NACHI Cylinder Roller Bearing

NACHI Self-aligning Ball Bearing

More Bearings

NACHI Spherical Roller Bearing

NACHI Thrust Roller Bearing

Product Description of NACHI Bearing

We are an authorized dealer of NACHI bearings. We can provide most of the bearing products in NACHI bearing catalogue. We offer a full line of NACHI products including Ball Bearings, Self-Aligning Bearings, Angular Contact Bearings, Cylindrical Bearings, Needle Roller Bearings and Spherical Bearings at very competitive prices for same day or next day delivery.

NACHI Roller Bearing

NACHI Cylindrical Roller Bearings

The construction of this roller bearing type is the simplest of all radial roller bearings. This bearing type is usually used for high speed applications. Due to the linear contact of the inner ring, outer ring and rollers, this bearing has a large radial load capacity. The various cylindrical roller bearing configurations are.

  • N,NJ,NF,NU,RNU: Integral reinforcement (flange)
  • NH,NP;NUP;NUH: complete 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.
The raceways of the outer rings of these bearings are designed as spherical surfaces with the centre of the circle coinciding with the centre of the bearing. NACHI spherical roller bearings feature a modified design with improved linear contact between the raceways and the rollers. This construction enables very high radial and shock load capacities to be achieved.

NACHI Spherical Roller Thrust Bearings

The raceway of the bearing race is spherical, and the radius center is located on the bearing axis. This design provides self-aligning capability for the bearing. The contact angle is about 45 °, so that the bearing can withstand axial load and a small to medium amount of radial load. NACHI spherical roller thrust bearing can bear high load at medium and low speed.

This bearing type is commonly used in injection molding machines, crane hooks and other large machines due to its large load capacity and centering characteristics. The cage is made of machined high-strength brass or pressed steel.

NACHI Ball Bearings

NACHI Deep Groove Ball Bearings

Deep groove ball bearings are the most popular of all ball bearing types because they have a variety of seal, guard, and stop ring arrangements to choose from. The bearing ring groove is circular arc, slightly larger than the radius of the ball. The ball contacts the raceway point (elliptical contact under load). The inner ring shoulder is the same height (the same as the outer ring shoulder). Deep groove ball bearings can withstand radial, axial or compound loads, and because of its simple design, this type of bearing can be produced to provide high operating accuracy and high-speed operation. The standard ball holder (cage) is made of pressed steel. Machined cages are used for high speed running bearings or large diameter bearings.

NACHI Self-aligning Ball Bearings

This type is constructed with the inner ring and ball assembly contained within an outer ring with a spherical raceway. Due to the construction, this bearing type can tolerate small angular misalignments caused by deflection or mounting errors. Spherical ball bearings are suitable for long shafts where it is difficult to locate the housing bore precisely. This type is 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 ring raceway, this bearing can only be used for light axial load applications

NACHI Angular Contact Ball Bearings

This bearing type has raceways with set contact angles on both the inner and outer rings.
These bearings are non-separable. More balls can be fitted than in deep groove ball bearings due to the use of a countersunk construction for inserting the balls.
Single row angular contact ball bearings can carry radial, axial or combined loads, but any axial loads must be in one direction. This bearing type is usually used in pairs to withstand induced loads caused by internal axial forces generated by the applied radial loads. When two individual bearings are fitted in adjacent positions, NACHI provides pre-adjusted clearance for these combined parts (pairs). Pairs of combined bearings are paired groups. Combined or paired bearings can be arranged back-to-back (DB), face-to-face (DF) or in tandem (DT). DB or DF groups can carry axial loads in both directions.

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.

Other NACHI Bearings

NACHI Precision Bearings

Ball screws are precision components that convert rotary motion into rotational motion and then into linear motion (or vice versa). They are becoming increasingly popular in robotics, machine tool construction and measuring equipment technology. Thrust angular contact ball bearings manufactured for all sizes of ball screw drives have an adjustable preload and are particularly easy to assemble. These bearings have a contact angle of 60°. The large number of balls makes these bearings very robust.

NACHI Sheave Bearings

  • Basic design: fully complementary. Double row. Sealed on both sides
    Highest dynamic and static
  • load ratings: maximum utilisation of the bearing section provides maximum load ratings.
  • Excellent sealing capacity: uniquely designed rubber contact seals protect against dust and water ingress.
  • Positioning: easy axial positioning thanks to snap rings on both sides
  • Lubrication: Lubrication with lithium soap-based grease containing extreme pressure additives.
  • Re-lubrication: Lubrication only through lubrication holes and grooves in the inner ring.
  • Operating temperature: Suitable from -30 to +120°C
  • Applications: very suitable for rope sheaves

Application of NACHI Bearing

Factory and Warehouse Display

We are professional IKO bearing suppliers and have a large stock of iko linear rails and bearings, please send us the IKO bearing type you need for a free quote!KOYO,SKF,FAG,NSK,KBC, NTN and other brands of bearings and special bearings customized according to customer needs have been produced, packed in boxes in our warehouse, and are waiting to be packaged and delivered to your hands.Please send us the bearing model you need, and we will give you the best IKO bearing price.

iko bearing

Shipping & Package of NACHI Bearing

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

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

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.

Hot Products



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
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.

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