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21312 EK Double Row Spherical Roller Bearing
21312 EK Double Row Spherical Roller Bearing

21312 EK Double Row Spherical Roller Bearing

The 21312 EK is a double-row spherical roller bearing with a 60mm bore and 130mm outer diameter, crafted from robust chrome steel. It manages combined loads up to 48784 lbf and operates smoothly at speeds up to 6300 RPM.

Its open design requires lubrication, with a 3mm hole for easy greasing. The steel cage and tapered bore ensure stability and long service life, even in temperatures from -30°C to 200°C.

This bearing is interchangeable with SKF models, making it a practical choice for replacements. Suitable for heavy-duty applications like industrial gearboxes or mining equipment where high radial loads are common.

Weighing 2.05kg, it’s built to handle tough conditions while complying with RoHS and REACH standards. The spherical rollers allow slight misalignment, adding to its versatility.

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Product Parameters

  • Part Number 21312 EK
  • Brand TFL
  • Interchangeable SKF
  • Size 60 x 130 x 31 mm
  • Bore Dia 60 mm
  • Bore Dia Tolerance +0.03mm to 0
  • Outer Dia 130 mm
  • Outer Dia Tolerance -0.018mm to 0
  • Width 31 mm
  • Width Tolerance -0.06mm to 0
  • Shoulder Dia Of Inner Ring 87.8 mm
  • Shoulder/Recess Dia Of Outer Ring 115 mm
  • Width Of Lubrication Groove 6 mm
  • Diameter Of Lubrication Hole 3 mm
  • Chamfer Dimension min.2.1 mm
  • System of Measurement Metric
  • Radial run-out Standard
  • Bearing Type Roller
  • Roller Bearing Type Spherical
  • Bore Type Taper 1:12
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 48784 lbf
  • Static Radial Load 53954 lbf
  • Max Speed 6300 rpm
  • Lubrication Required
  • Temperature Range -30° to 200 °C
  • Radial Clearance CN
  • RoHs Compliant
  • REACH Compliant
  • Weight 2.05 kg
  • Price (US$) 63.86

Features

Performance Features of 21312 EK Bearing

21312 EK Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 48784 lbf, ensuring reliable performance in heavy-duty applications.
The double-row spherical roller design allows for slight misalignment, reducing stress on the bearing.
With a maximum speed of 6300 rpm, it balances durability and efficiency.

How Does 21312 EK Bearing Reduce Friction?

21312 EK Bearing features a steel cage that keeps the rollers aligned, minimising friction and wear.
The spherical roller design ensures smooth operation even under misaligned conditions.
Its chrome steel construction provides excellent durability, reducing long-term maintenance needs.
The lubrication groove and hole design help maintain consistent performance.

Engineered for Precision: 21312 EK Bearing

21312 EK Bearing’s tapered bore design ensures a secure fit, enhancing precision in operation.
The double-row construction distributes loads evenly, improving stability and longevity.
Its temperature range of -30° to 200°C makes it suitable for various industrial environments.
The CN radial clearance offers optimal performance for most applications.

Why Choose 21312 EK Bearing for Precision Tasks?

21312 EK Bearing’s spherical roller design accommodates misalignment without sacrificing performance.
The chrome steel materials resist wear, ensuring consistent operation over time.
With a static radial load capacity of 53954 lbf, it handles heavy loads with ease.
Its open design simplifies lubrication, keeping maintenance straightforward.

Structural Advantages of 21312 EK Bearing

21312 EK Bearing’s double-row construction provides excellent load distribution and stability.
The lubrication groove and hole ensure even oil distribution, reducing friction.
Its chrome steel rollers and rings offer high resistance to wear and fatigue.
The bearing’s design allows for easy installation and reliable long-term performance.

Application

Industrial Uses of 21312 EK Bearing
21312 EK Bearing is commonly used in heavy machinery like crushers and vibrating screens, where its double-row spherical design handles misalignment and heavy radial loads. The chrome steel construction ensures durability in harsh industrial environments.

In automotive applications, 21312 EK Bearing supports components like differential systems and wheel hubs, providing reliable performance under combined loads. Its tapered bore design simplifies installation and maintenance.

For automation systems, 21312 EK Bearing is ideal for robotic arms and conveyor belts, offering smooth operation at high speeds. The steel cage enhances stability, making it suitable for continuous use.

Where Is 21312 EK Bearing Used?
You’ll find 21312 EK Bearing in wind turbines, where its ability to handle misalignment and heavy loads is crucial. The lubrication groove ensures consistent performance even in demanding conditions.

In mining equipment, 21312 EK Bearing excels in applications like conveyor systems, thanks to its robust design and high load capacity. The temperature range allows it to perform well in extreme environments.

Built for Heavy-Duty Use: 21312 EK Bearing
21312 EK Bearing is a go-to choice for construction machinery, such as cranes and excavators, due to its high static and dynamic load ratings. The open seal type facilitates easy lubrication.

In agricultural equipment, 21312 EK Bearing supports heavy loads in tractors and harvesters. Its spherical roller design compensates for shaft misalignment, ensuring long service life.

Automotive vs Aerospace: Applications of 21312 EK Bearing
In automotive systems, 21312 EK Bearing is used in transmissions and axles, where its combined load capacity is essential. The metric sizing ensures compatibility with global vehicle standards.

For aerospace applications, 21312 EK Bearing is less common but can be found in ground support equipment. Its high-speed capability and temperature resistance make it a reliable choice.

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