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21307K W33 Double Row Spherical Roller Bearing
21307K W33 Double Row Spherical Roller Bearing

21307K W33 Double Row Spherical Roller Bearing

The 21307K W33 is a double-row spherical roller bearing with a 35mm bore and 80mm outer diameter, crafted from sturdy chrome steel. It manages combined loads up to 17805 lbf and operates smoothly at speeds reaching 9500 RPM.

Its open design and tapered bore ensure easy mounting, while the steel cage enhances durability. The bearing performs reliably in temperatures ranging from -30°C to 200°C.

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

Weighing 0.54kg, it offers a robust yet manageable solution for demanding environments. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number 21307K W33
  • Brand TFL
  • Interchangeable SKF
  • Size 35 x 80 x 21 mm
  • Bore Dia 35 mm
  • Bore Dia Tolerance +0.025mm to 0
  • Outer Dia 80 mm
  • Outer Dia Tolerance -0.013mm to 0
  • Width 21 mm
  • Width Tolerance -0.06mm to 0
  • Shoulder Dia Of Inner Ring 47.2 mm
  • Shoulder/Recess Dia Of Outer Ring 65.6 mm
  • Chamfer Dimension min.1.5 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 17805 lbf
  • Static Radial Load 16186 lbf
  • Max Speed 9500 rpm
  • Lubrication Required
  • Temperature Range -30° to 200 °C
  • Radial Clearance CN
  • RoHs Compliant
  • REACH Compliant
  • Weight 0.54 kg
  • Price (US$) 19.26

Features

Performance Features of 21307K W33 Bearing

21307K W33 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 17805 lbf, ensuring reliable performance in heavy-duty applications.

The double-row spherical roller design allows for slight misalignment, reducing stress on the bearing.
This feature enhances its durability and extends service life in demanding conditions.

With a maximum speed of 9500 rpm, 21307K W33 Bearing balances high performance and efficiency.
Its open design simplifies lubrication, making maintenance straightforward and cost-effective.

21307K W33 Bearing operates effectively in temperatures ranging from -30° to 200 °C.
This makes it suitable for various industrial environments, including those with extreme temperature variations.

Application

Industrial Uses of 21307K W33 Bearing
21307K W33 Bearing is commonly used in heavy machinery like crushers and vibrating screens, where its double-row design handles both radial and axial loads efficiently. The tapered bore ensures a secure fit, reducing slippage during high-load operations.

What Makes 21307K W33 Bearing a Preferred Choice?
In conveyor systems, 21307K W33 Bearing’s spherical rollers compensate for misalignment, ensuring smooth operation even in uneven conditions. Its chrome steel construction offers durability, making it suitable for harsh industrial environments.

Built for Heavy-Duty Use: 21307K W33 Bearing
For mining equipment, 21307K W33 Bearing’s high dynamic load capacity (17805 lbf) supports continuous operation under extreme stress. The open design allows for easy lubrication, extending bearing life in dusty or wet conditions.

Automotive vs Aerospace: Applications of 21307K W33 Bearing
In truck wheel hubs, 21307K W33 Bearing provides reliable performance under combined loads, while its temperature range (-30° to 200°C) suits demanding climates. Aerospace applications benefit from its precision, though lighter alternatives are often preferred.

Essential Roles of 21307K W33 Bearing
21307K W33 Bearing is vital in paper mill machinery, where its steel cage and rollers withstand high-speed rotations (up to 9500 rpm). The metric sizing ensures compatibility with European and Asian industrial equipment standards.

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