KOYO Bearings

KOYO bearings 23168RHA

Model:23168RHA


Dimensions(mm):340x580x190


Email:skfnskoyo@gmail.com


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Sample:Free Samples Is Available


 Delivery Terms:By Sea, Air Or Express-DHL,FedEx, TNT, UPS, EMS 



Description

200rr-koyo
Japan’s koyo  bearing
 company produces tens of thousands of high-precision and high-quality Koyo bearing series products), providing information about aerospace technology, computer components, motors, high-speed trains, MRT trains, industrial machinery, CNC lathes, high-precision machining machines, automobile, locomotive industry, steel industry And other important components to make the best choice.

Of course. Here is a detailed parameter introduction for the KOYO 23168RHA bearing.

Quick Summary

The KOYO 23168RHA is a premium, high-performance Spherical Roller Bearing with a straight cylindrical bore. It is engineered for the most demanding applications involving extreme radial loads, misalignment, and harsh operating conditions. The "RHA" suffix combination signifies a bearing with enhanced internal geometry and a robust hardened steel cage, representing the top tier of performance for its size.


Detailed Parameter Breakdown

This is a very large, heavy-duty bearing. Its core dimensions are part of the standardized 23168 size series.

ParameterValueDescription
Bearing Type
Spherical Roller Bearing
Shaft Diameter (d)340 mmThe bore size that fits onto the shaft.
Outside Diameter (D)580 mmThe outer diameter of the bearing.
Width (B)190 mmThe total width or thickness of the bearing.
Dynamic Load Rating (C)~3,300 kNThe radial load the bearing can endure for 1 million revolutions. Extremely high.
Static Load Rating (C₀)~6,300 kNThe maximum stationary load without permanent deformation.
Grease Limit Speed~600 rpmMaximum rotational speed recommended for grease lubrication.
Oil Limit Speed~750 rpmMaximum rotational speed recommended for oil lubrication.
Weight~190 kgApproximate weight of the bearing. Requires professional handling.

Note: Exact values for load ratings and limiting speeds can vary. Always consult the latest official KOYO/JTEKT catalog for critical design calculations.


Suffix Code Explanation (RHA)

The suffix combination is what defines this as a premium bearing. Each letter has a specific meaning:

  • R: Enhanced Internal Design. This indicates an optimized internal geometry. This typically includes:

    • An asymmetric roller profile for better load distribution and reduced friction.

    • An optimized raceway and flange design.

    • The result is higher load capacity, lower operating temperatures, and longer service life.

  • H: Hardened Steel Cage. This is a critical feature. The cage (which separates and guides the rollers) is made from through-hardened steel. This provides:

    • Superior strength and resistance to shock loads.

    • High resistance to wear and deformation.

    • Exceptional performance in high-vibration applications where other cages might fail.

  • A: Internal Design Asymmetry. This suffix often reinforces the "R" designation, explicitly confirming the use of advanced asymmetric rollers for maximum performance.

In summary: 23168RHA = A top-tier spherical roller bearing with an optimized asymmetric design and an ultra-robust hardened steel cage.


Key Features and Benefits

  1. Ultra-High Load Capacity: Designed to withstand the most severe radial loads and moderate axial loads.

  2. Superior Robustness (H Cage): The hardened steel cage makes it ideal for applications with high vibration, impact loads, and potential cage-slippage issues.

  3. Self-Alignment: Compensates for static misalignment (up to ~1.5-2.5°) from mounting errors or shaft deflection.

  4. High Efficiency (R/A Design): The asymmetric roller design reduces friction, leading to lower operating temperatures and higher energy efficiency.

  5. Long Service Life: The combination of enhanced geometry and a robust cage maximizes reliability and service life in critical machinery.


Typical Applications

This bearing is specified for the most critical and heavy-duty applications across various industries:

  • Gearboxes in mining equipment (e.g., large excavators, draglines, ball mills)

  • Vibrating Screens and crushers in mining and aggregate processing

  • Marine Propulsion Systems and stern tubes

  • Large Pumps and fans in power generation

  • Metal Rolling Mills

  • Paper Mill Dryer Rolls

  • Heavy-duty industrial fans

Installation Notes

  • Shaft Fit: This bearing has a straight cylindrical bore. The shaft must be machined to a very precise tolerance (usually a tight interference fit, like m5 or n5) to ensure a secure mount.

  • Mounting: Due to its size and weight (~190 kg), professional tools and procedures are essential. Heating the bearing using a controlled induction heater is mandatory for installation to expand the inner ring. Never use an open flame.

  • Lubrication: Proper lubrication is critical. Use a high-quality, high-viscosity grease with extreme pressure (EP) additives. For high-speed applications, an oil circulation system might be necessary.

  • Alignment: While self-aligning, best practice is to ensure the best possible initial alignment to maximize bearing life.


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Jinan IUA Bearing Co., LTD

Location

Room 3203, Mingzhu Business Port, Jingyi Road, Jinan City, Shandong Province

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0086 18554001053

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skfnskoyo@gmail.com

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