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Four-Point Contact Angular Contact Ball Bearings (General) QJ 304 N2PHAS

Four-Point Contact Angular Contact Ball Bearings (General) QJ 304 N2PHAS

The QJ 304 N2PHAS is a compact four-point contact bearing, measuring 20mm by 52mm by 15mm, crafted from sturdy chrome steel. It handles radial loads up to 7200 lbf and spins smoothly at speeds up to 24,000 RPM.
Its open design and Peek cage ensure durability and easy maintenance, while the P6 tolerance class offers reliable precision. The bearing operates well in temperatures from -30°C to 110°C.
This model is interchangeable with SKF bearings, making it a practical choice for replacements. Ideal for applications like gearboxes or pumps where radial loads and high speeds are common.
Weighing just 0.18kg, it’s lightweight yet robust. Compliant with RoHS and REACH standards for safe and versatile use.

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Product Parameters

  • Part Number QJ 304 N2PHAS
  • Brand TFL
  • Interchangeable SKF
  • System of Measurement Metric
  • Bearing Type Ball
  • For Load Direction Four Point Contact
  • Construction Single Row
  • Seal Type Open
  • Bore Dia 20 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 52 mm
  • Outer Dia Tolerance -0.011mm to 0
  • Width 15 mm
  • Width Tolerance -0.05mm to 0
  • External Diameter On Inner Ring (Large Side Face) 27.5 mm
  • Internal Diameter On Outer Ring 40.8 mm
  • Chamfer Dimension 1.1 mm
  • Distance Pressure Point (a) 25 mm
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Peek
  • Dynamic Radial Load 7200 lbf
  • Static Radial Load 4860 lbf
  • Max Speed 24000 rpm
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Tolerance Class P6 (ABEC-3)
  • ROHS Compliant
  • REACH Compliant
  • Weight 0.18 kg
Four-Point Contact Angular Contact Ball Bearings (General) QJ 304 N2PHAS dimension drawing
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Features

How Does QJ 304 N2PHAS Bearing Reduce Friction?

QJ 304 N2PHAS Bearing features a four-point contact design, optimising load distribution and minimising friction.
Its chrome steel rings and balls ensure smooth operation, even under high radial loads of up to 7200 lbf.
The PEEK cage maintains ball alignment, reducing wear and enhancing efficiency.
With a maximum speed of 24,000 rpm, it delivers reliable performance in high-speed applications.

Application

Industrial Uses of QJ 304 N2PHAS Bearing
QJ 304 N2PHAS Bearing is commonly used in machine tools, where its four-point contact design handles combined radial and axial loads efficiently. The chrome steel construction ensures durability in high-precision environments.

What Makes QJ 304 N2PHAS Bearing a Preferred Choice?
In automotive applications, QJ 304 N2PHAS Bearing supports gearbox systems, providing smooth rotation under varying loads. Its P6 tolerance class makes it suitable for demanding performance requirements.

Perfect Fit for Automation: QJ 304 N2PHAS Bearing
QJ 304 N2PHAS Bearing works well in robotic arms, offering reliable movement with minimal friction. The Peek cage material reduces weight while maintaining strength.

Medical vs Industrial: Where QJ 304 N2PHAS Bearing Excels
QJ 304 N2PHAS Bearing is ideal for medical imaging devices, where precision and quiet operation are essential. In industrial settings, it excels in conveyor systems due to its high-speed capability.

Where Is QJ 304 N2PHAS Bearing Used?
You’ll find QJ 304 N2PHAS Bearing in 3D printers, where its low friction and high-speed performance ensure accurate prints. The open design allows for easy lubrication and maintenance.

Q&A

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