China Hot selling Ka025ar0 Equal-Section Thin-Wall Bearing Ultra Reali Slim Wall Roller Silverthin Ball Tapered Angular Contact Imperial Sleeve bearing engineering

Product Description

Product Parameters

 Inch size(in)  Metric size(mm)                Loading capacity(N) Weight
radial loading axial  
d D B d D B Cor Cr Cor Cr
KA571AR0 2 2.5 0.25 50.8 63.5 6.35 3510 1800 10130 4260 0.045
KA571AR0 2.5 3 0.25 63.5 76.2 6.35 4260 2040 12350 4880 0.054
KA030AR0 3 3.5 0.25 76.2 88.9 6.35 5060 2250 14620 5460 0.064
KA035AR0 3.5 4 0.25 88.9 101.6 6.35 5820 2450 16840 6000 0.077
KA040AR0 4 4.5 0.25 101.6 114.3 6.35 6620 2640 19114 6530 0.086
KA042AR0 4.25 4.75 0.25 107.95 120.65 6.35 7571 2730 25710 6800 0.091
KA045AR0 4.5 5 0.25 114.3 127 6.35 7370 2830 21380 7571 0.095
KA047AR0 4.75 5.25 0.25 120.65 133.35 6.35 7770 2920 22490 7290 0.1
KA050AR0 5 5.5 0.25 127 139.7 6.35 8170 3000 23600 7510 0.104
KA055AR0 5.5 6 0.25 139.7 152.4 6.35 8970 3170 25870 8000 0.113
KA060AR0 6 6.5 0.25 152.4 165.1 6.35 9730 3340 28090 8440 0.127
KA065AR0 6.5 7 0.25 165.1 177.8 6.35 1571 3500 30360 8890 0.136
KA070AR0 7 7.5 0.25 177.8 190.5 6.35 11290 3650 32620 9330 0.145
KA075AR0 7.5 8 0.25 190.5 203.2 6.35 12090 3800 34850 9730 0.154
KA080AR0 8 8.5 0.25 203.2 215.9 6.35 12840 3950 37110 10130 0.163
KA090AR0 9 9.5 0.25 228.6 241.3 6.35 14400 4240 41600 1 0571 0.186
KA100AR0 10 10.5 0.25 254 266.7 6.35 15950 4500 46090 11730 0.204
KA110AR0 11 11.5 0.25 279.4 292.1 6.35 17510 4760 5 0571 12490 0.227
KA120AR0 12 12.5 0.25 304.8 317.5 6.35 19060 5571 55070 13200 0.245


Detailed Photos


Product Details

1.Thin-wall design: The cross-section height and width remain constant, suitable for applications with limited space.
2.Lightweight: The lightweight design helps reduce the overall equipment weight.
3.High load-bearing capacity: Although the bearing wall is thin, it has excellent load-bearing capacity through optimized design.
4.High precision: Provides high precision grade, suitable for demanding applications.
5.Diversification: There are a variety of sizes and forms to choose from, including deep groove ball bearings, angular contact ball bearings and four-point contact ball bearings, etc.


Product Application

Precision instruments
Medical equipment
Other application areas that require space reduction, weight reduction and high performance

Packaging & Shipping

Universal Packing

Without any logo on bearings or packing.

SDLB Packing

With our brand SDLB on bearings and packing.

Customized Packing

Depends on buyer’s requirements.

Original Brand Packing

Bearing and packing are both original. Please contact us for pictures.





Other Bearings

We supply different types of ball and roller bearings,tapered roller bearing, deep groove ball bearing, spherical roller bearing, Linear guides. 


Q1:  What is our advantages?
A: Manufacturer – Do it only with the Best;Your Choice make different. 
Q2:  Our Products
A:   Equal-section thin-wall bearings,Linear CZPT bearings,Deep groove ball bearing,Cylindrical roller bearing,Spherical roller bearing,Needle roller bearing,Angular contact ball bearing,Tapered roller bearing,Thrust ball bearing,Self-aligning ball bearing.
Q3:  Process of our production
A:  Heat Treatment – Grinding – Parts Inspection – Assembly – Final Inspection – Packing
Q4:  How to customize bearing(non-standard) from your company?
A:  We offer OEM,Customized(Non-standard) service and you need to provide drawing and detailed Technical Data.
Q5:  What should I care before installation?
A:  Normally, the preservative with which new bearings are coated before leaving the factory does not need to be removed; it is only necessary to wipe off the outside cylin­drical surface and bore, if the grease is not compatible with the preservative, it is necessary to wash and carefully dry the bearing.Bearings should be installed in a dry, dust-free room away from metal working or other machines producing swarf and dust.
Q6:  How to stock and maintenance my bearings right? 
A: Do not store bearings directly on concrete floors, where water can condense and collect on the bearing;Store the bearings on a pallet or shelf, in an area where the bearings will not be subjected to high humidity or sudden and severe temperature changes that may result in condensation forming;Always put oiled paper or, if not available, plastic sheets between rollers and cup races of tapered roller bearings.

To get price list of promotion bearings, please contact us.
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Precision Rating: P0 P4 P5 P6
Number of Row: Single Row
Bore Size: 63.5 – 63.6 mm
Width: 0.25 Inch/6 mm
Weight: 0.054 Kg
Radial Clearance: C2 Co C3 C4 C5
US$ 15/Piece
1 Piece(Min.Order)

Request Sample



Customized Request

roller bearing

How do roller bearings enhance the overall efficiency and functionality of machinery and equipment?

Roller bearings play a crucial role in enhancing the overall efficiency and functionality of machinery and equipment. They provide numerous benefits that contribute to improved performance, reliability, and longevity. Here’s a detailed explanation of how roller bearings enhance the efficiency and functionality of machinery and equipment:

  • Reduced Friction:

Roller bearings are designed to minimize friction between moving parts. They utilize rolling elements, such as cylindrical, spherical, or tapered rollers, to reduce contact area and enable smooth rolling motion. By reducing friction, roller bearings minimize energy losses, improve efficiency, and reduce heat generation. This allows machinery and equipment to operate with less resistance, resulting in improved overall efficiency.

  • Load Distribution:

Roller bearings are capable of distributing loads evenly across their rolling elements. This enables machinery and equipment to handle high loads without excessive stress on individual components. By distributing the load, roller bearings prevent localized wear and premature failure of critical parts. This leads to increased durability and reliability of the machinery or equipment, enhancing its overall functionality.

  • High-Speed Operation:

Roller bearings are designed to accommodate high rotational speeds. The rolling motion of the bearing elements reduces friction and allows for smooth operation even at high speeds. This is particularly important in applications such as electric motors, turbines, and automotive engines, where rapid rotation is required. By enabling high-speed operation, roller bearings enhance the efficiency and functionality of machinery and equipment in various industries.

  • Reduced Vibration and Noise:

Properly selected and installed roller bearings help reduce vibration and noise levels in machinery and equipment. They absorb and dampen vibrations caused by rotating or oscillating parts, resulting in smoother operation and reduced noise emissions. This is particularly important in precision applications, such as machine tools or medical equipment, where minimal vibration and noise are essential for accuracy and patient comfort.

  • Compact Design:

Roller bearings offer a compact design that allows for efficient use of space in machinery and equipment. They have a high load-carrying capacity relative to their size, enabling the design of more compact and lightweight systems. This is advantageous in applications where space constraints are a concern, such as in automotive, aerospace, or portable devices. The compact design facilitated by roller bearings enhances the functionality and versatility of the machinery or equipment.

  • Easy Installation and Maintenance:

Roller bearings are generally designed for ease of installation and maintenance. They are available in various configurations, including single-row, double-row, and multi-row designs, to accommodate different mounting arrangements. This simplifies the installation process and reduces downtime during maintenance or replacement. Additionally, roller bearings often have standardized dimensions and interfaces, making it easier to interchange them with compatible bearings when necessary.

In summary, roller bearings enhance the overall efficiency and functionality of machinery and equipment through reduced friction, load distribution, high-speed operation, vibration and noise reduction, compact design, and ease of installation and maintenance. By incorporating roller bearings into the design and operation of machinery and equipment, industries can achieve improved performance, reliability, and productivity, leading to enhanced operational efficiency and customer satisfaction.

roller bearing

Can you provide examples of machinery or equipment that rely on precision roller bearings?

Precision roller bearings are indispensable components in various machinery and equipment that require high accuracy, tight tolerances, and smooth operation. These bearings are designed to provide exceptional precision and reliability in demanding applications. Here are some examples of machinery and equipment that rely on precision roller bearings:

  • Machine Tools:

Precision roller bearings are extensively used in machine tools such as milling machines, lathes, grinding machines, and machining centers. These bearings ensure precise movement and positioning of the tooling components, enabling accurate cutting, shaping, and machining operations. The high precision and rigidity of roller bearings contribute to superior machining quality and dimensional accuracy.

  • Robotics:

In robotics applications, precision roller bearings are crucial for achieving accurate and repeatable motion control. They are used in robot joints, arms, and end-effectors to ensure precise movement, positioning, and load handling. Precision bearings enable robots to perform tasks with high accuracy and reliability, making them ideal for industrial automation, assembly lines, and advanced robotic systems.

  • Optical and Imaging Equipment:

Precision roller bearings are employed in optical and imaging equipment, including cameras, telescopes, microscopes, and precision measurement instruments. These bearings support the moving components, such as lenses, mirrors, and stages, ensuring smooth and precise positioning. The high precision and low runout of roller bearings contribute to sharp imaging, accurate measurements, and stable optical performance.

  • Coordinate Measuring Machines (CMMs):

CMMs are used for precise dimensional measurement and inspection in manufacturing and quality control processes. Precision roller bearings are utilized in the moving axes and probe systems of CMMs to provide accurate and repeatable positioning. These bearings enable CMMs to achieve precise measurements with tight tolerances, ensuring the accuracy and reliability of dimensional inspection.

  • Semiconductor Manufacturing Equipment:

In the semiconductor industry, precision roller bearings are critical in wafer handling, lithography systems, and other semiconductor manufacturing processes. They contribute to the precise alignment and movement of components, such as wafer stages, reticles, and masks. The high precision and low runout of roller bearings are essential for achieving the stringent dimensional requirements in semiconductor fabrication.

  • High-Speed Spindles:

Precision roller bearings are employed in high-speed spindles used in various applications, including CNC machining, milling, and grinding operations. These bearings enable the spindles to operate at high rotational speeds while maintaining exceptional precision and stability. Precision bearings ensure minimal vibration, runout, and heat generation, allowing for efficient and high-quality machining processes.

These examples represent just a few of the many machinery and equipment types that rely on precision roller bearings. Other applications include printing presses, textile machinery, medical devices, aerospace systems, and more. Precision roller bearings contribute to the overall performance, accuracy, and reliability of these systems, enabling advanced manufacturing, automation, and technological advancements.

roller bearing

What are roller bearings, and how are they used in various mechanical applications?

Roller bearings are mechanical components designed to facilitate smooth and efficient rolling motion between two surfaces. They consist of cylindrical or tapered rollers placed between inner and outer raceways, which are typically in the form of rings or tracks. Roller bearings are widely used in various mechanical applications where there is a need to support radial or axial loads and reduce friction. Here’s a detailed explanation of roller bearings and their diverse applications:

Types of Roller Bearings:

There are several types of roller bearings, each designed to accommodate specific load types and operating conditions:

  • Cylindrical Roller Bearings: These bearings feature cylindrical rollers that distribute loads evenly over a larger surface area. They are suitable for high radial loads and moderate axial loads and often used in applications such as electric motors, gearboxes, pumps, and machine tools.
  • Tapered Roller Bearings: Tapered roller bearings consist of tapered rollers and raceways that are angled to handle both radial and axial loads. They are commonly used in automotive applications, such as wheel bearings, transmissions, and differential gears, as well as in heavy machinery and equipment.
  • Spherical Roller Bearings: Spherical roller bearings have barrel-shaped rollers that align themselves with the outer raceway, allowing them to accommodate misalignment and shaft deflection. They are commonly used in applications with high radial loads and moderate axial loads, such as conveyor systems, mining equipment, and vibrating screens.
  • Needle Roller Bearings: Needle roller bearings have long, thin rollers with a high length-to-diameter ratio. They are designed to handle high radial loads in limited spaces and are commonly used in applications such as automotive transmissions, industrial gearboxes, and small appliances.
  • Thrust Roller Bearings: Thrust roller bearings are designed to handle axial loads and provide high thrust capacity in one direction. They consist of cylindrical or tapered rollers arranged in a cage and are used in applications such as automotive transmissions, crane hooks, and large-scale machinery.

Applications of Roller Bearings:

Roller bearings find extensive use in a wide range of mechanical applications due to their ability to support heavy loads, reduce friction, and provide smooth rotational motion. Some notable applications include:

  • Automotive Industry: Roller bearings are widely used in automotive applications, including wheel bearings, transmissions, differentials, and engines. They provide support for radial and axial loads, enable smooth rotation, and contribute to overall vehicle performance and reliability.
  • Industrial Machinery: Roller bearings are essential components in various industrial machinery and equipment. They are used in gearboxes, electric motors, pumps, conveyors, printing presses, and machine tools, among others. Roller bearings provide reliable and efficient operation, reducing friction and enabling high-speed and heavy-load capabilities.
  • Aerospace and Aviation: Roller bearings are critical in aerospace and aviation applications, where they are used in aircraft engines, landing gear systems, control surfaces, and helicopter rotor systems. They must meet stringent performance and reliability requirements in extreme operating conditions.
  • Construction and Mining: Roller bearings are employed in construction and mining equipment, such as excavators, bulldozers, cranes, and rock crushers. They provide robust support for heavy loads, withstand harsh environments, and contribute to the durability and performance of these machines.
  • Energy and Power Generation: Roller bearings are used in power generation equipment, including turbines, generators, and wind turbines. They enable smooth rotation, handle high loads, and contribute to the efficiency and reliability of energy production systems.
  • Railways and Transportation: Roller bearings play a crucial role in railway applications, including locomotives, passenger cars, and freight wagons. They provide support for wheels, axles, and suspension systems, ensuring safe and reliable operation under dynamic loads and varying operating conditions.
  • Medical Equipment: Roller bearings are used in various medical equipment, such as MRI machines, X-ray scanners, and surgical instruments. They provide precise and smooth motion in critical applications, contributing to the accuracy and reliability of medical procedures.

These are just a few examples of the extensive use of roller bearings in various mechanical applications. The versatility, load-carrying capacity, and efficiency of roller bearings make them essential components in numerous industries, where they contribute to the performance, durability, and reliability of machinery and equipment.

China Hot selling Ka025ar0 Equal-Section Thin-Wall Bearing Ultra Reali Slim Wall Roller Silverthin Ball Tapered Angular Contact Imperial Sleeve   bearing engineeringChina Hot selling Ka025ar0 Equal-Section Thin-Wall Bearing Ultra Reali Slim Wall Roller Silverthin Ball Tapered Angular Contact Imperial Sleeve   bearing engineering
editor by CX 2024-05-10

Roller Bearing

As one of the leading roller bearing manufacturers, suppliers, and exporters of mechanical products, We offer roller bearing and many other products.

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