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21318 E Double Row Spherical Roller Bearing
21318 E Double Row Spherical Roller Bearing

21318 E Double Row Spherical Roller Bearing

The 21318 E is a double-row spherical roller bearing with a 90mm bore and 190mm outer diameter, crafted from robust chrome steel. It manages combined loads, handling up to 8835 lbf dynamically and 101164 lbf statically.

Designed for high-speed applications, it spins smoothly at up to 4800 RPM. Its open construction and lubrication groove (8.3mm wide) make maintenance straightforward, while the steel cage ensures durability.

This bearing suits harsh environments, operating in temperatures from -30°C to 200°C. Its spherical rollers accommodate misalignment, ideal for heavy machinery like conveyors or crushers.

Weighing 6.25kg, it’s built for demanding industrial use. Compliant with RoHS and REACH standards, it’s interchangeable with SKF models for easy replacement.

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Product Parameters

  • Part Number 21318 E
  • Brand TFL
  • Interchangeable SKF
  • Size 90 x 190 x 43 mm
  • Bore Dia 90 mm
  • Bore Dia Tolerance -0.02mm to 0
  • Outer Dia 190 mm
  • Outer Dia Tolerance -0.030mm to 0
  • Width 43 mm
  • Width Tolerance -0.08mm to 0
  • Shoulder Dia Of Inner Ring 112 mm
  • Shoulder/Recess Dia Of Outer Ring 150 mm
  • Width Of Lubrication Groove 8.3 mm
  • Diameter Of Lubrication Hole 4.5 mm
  • Chamfer Dimension min.3 mm
  • System of Measurement Metric
  • Radial run-out Standard
  • Bearing Type Roller
  • Roller Bearing Type Spherical
  • Bore Type Cylindrical
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 8835 lbf
  • Static Radial Load 101164 lbf
  • Max Speed 4800 rpm
  • Lubrication Required
  • Temperature Range -30° to 200 °C
  • Radial Clearance CN
  • RoHs Compliant
  • REACH Compliant
  • Weight 6.25 kg
  • Price (US$) 115.33

Features

How Does 21318 E Bearing Handle Combined Loads?

21318 E Bearing features a double-row spherical roller design, making it ideal for handling both radial and axial loads.
Its chrome steel construction ensures durability, with a dynamic radial load capacity of 8835 lbf.
The steel cage maintains roller alignment, reducing friction and extending operational life.
With a maximum speed of 4800 rpm, it performs reliably in high-speed applications.

What Makes 21318 E Bearing Suitable for High-Temperature Applications?

21318 E Bearing operates efficiently in temperatures ranging from -30° to 200°C, thanks to its robust chrome steel material.
The open design allows for easy lubrication, ensuring smooth performance even under extreme conditions.
Its spherical roller design accommodates misalignment, reducing stress and wear.
This makes it a dependable choice for demanding industrial environments.

Engineered for Precision: 21318 E Bearing

21318 E Bearing is precision-crafted with a cylindrical bore, ensuring accurate fit and alignment.
The lubrication groove and holes facilitate consistent grease distribution, enhancing performance.
With a static radial load capacity of 101164 lbf, it excels in heavy-duty applications.
Its CN radial clearance provides optimal operation under varying load conditions.

Steel vs Ceramic Bearings: Strengths of 21318 E Bearing

21318 E Bearing uses chrome steel for both rings and rollers, offering excellent strength and wear resistance.
The steel cage ensures stability, making it more durable than ceramic alternatives in high-load scenarios.
Its spherical roller design adapts to misalignment, reducing maintenance needs.
This makes it a cost-effective and reliable solution for industrial machinery.

Performance Features of 21318 E Bearing

21318 E Bearing’s double-row spherical rollers distribute loads evenly, minimising stress on individual components.
The lubrication system ensures smooth operation, even at high speeds of up to 4800 rpm.
Its wide temperature range and high load capacity make it versatile for various applications.
The robust construction ensures long service life with minimal maintenance.

Application

Industrial Uses of 21318 E Bearing
The 21318 E Bearing is commonly used in heavy machinery like crushers and vibrating screens, where its double-row spherical design handles misalignment and heavy radial loads.
Its chrome steel construction ensures durability in harsh environments, making it a reliable choice for mining and construction equipment.

Where Is 21318 E Bearing Used?
You’ll often find 21318 E Bearing in industrial fans and pumps, where its high-speed capability and load capacity keep operations running smoothly.
The open design allows for easy lubrication, which is essential for maintaining performance in continuous-use applications.

Built for Heavy-Duty Use: 21318 E Bearing
21318 E Bearing excels in paper mills and steel plants, where its combined load handling and temperature resistance are key.
The steel cage adds extra strength, making it suitable for applications with heavy vibrations or shock loads.

Automotive vs Aerospace: Applications of 21318 E Bearing
In automotive systems, 21318 E Bearing supports components like drivetrains, thanks to its high static radial load capacity.
For aerospace, its temperature range and precision make it useful in auxiliary equipment, though it’s more common in industrial settings.

Practical Applications of 21318 E Bearing
21318 E Bearing is a go-to for conveyor systems in warehouses, where its robustness ensures long service life.
The metric sizing and interchangeable design with SKF models make it easy to source for global supply chains.

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