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Four-Point Contact Angular Contact Ball Bearings (General) QJ 305 N2MA
Four-Point Contact Angular Contact Ball Bearings (General) QJ 305 N2MA

Four-Point Contact Angular Contact Ball Bearings (General) QJ 305 N2MA

The QJ 305 N2MA is a four-point contact angular contact ball bearing with a 25mm bore and 62mm outer diameter, crafted from sturdy chrome steel. It handles radial loads up to 9562 lbf and spins smoothly at speeds up to 20,000 RPM.

Its single-row design with an open seal ensures easy lubrication, while the brass cage enhances durability. The bearing operates reliably 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 industrial gearboxes or machinery where radial and axial loads are combined.

Weighing just 0.29kg, it’s lightweight yet robust for its size. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number QJ 305 N2MA
  • 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 25 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 62 mm
  • Outer Dia Tolerance -0.011mm to 0
  • Width 17 mm
  • Width Tolerance -0.05mm to 0
  • External Diameter On Inner Ring (Large Side Face) 34 mm
  • Internal Diameter On Outer Ring 49 mm
  • Chamfer Dimension 1.1 mm
  • Distance Pressure Point (a) 30 mm
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Brass
  • Dynamic Radial Load 9562 lbf
  • Static Radial Load 6750 lbf
  • Max Speed 20000 rpm
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Tolerance Class P6 (ABEC-3)
  • ROHS Compliant
  • REACH Compliant
  • Weight 0.29 kg

Features

Performance Features of QJ 305 N2MA Bearing

QJ 305 N2MA Bearing is built with chrome steel rings and balls, offering excellent resistance to radial loads.
Its dynamic radial load capacity reaches 9562 lbf, ensuring reliable performance in various applications.

The brass cage maintains ball alignment, reducing friction and enhancing durability.
With a maximum speed of 20,000 rpm, it delivers both efficiency and long service life.

QJ 305 N2MA Bearing operates smoothly in temperatures from -30° to 110 °C, making it versatile for different environments.
Its P6 tolerance class ensures precision and consistent performance.

The open design allows for easy lubrication, reducing maintenance needs.
This bearing is ideal for applications requiring high-speed and high-load capabilities.

Application

Industrial Uses of QJ 305 N2MA Bearing
QJ 305 N2MA Bearing is commonly used in machine tools, where its four-point contact design handles combined radial and axial loads efficiently. The brass cage ensures smooth operation even at high speeds, making it suitable for precision equipment.

What Makes QJ 305 N2MA Bearing a Preferred Choice?
In automotive applications, QJ 305 N2MA Bearing supports gearbox systems, providing reliable performance under varying loads. Its metric dimensions and P6 tolerance class make it a versatile fit for many European and Asian car models.

Built for Heavy-Duty Use: QJ 305 N2MA Bearing
This bearing excels in conveyor systems, where its chrome steel construction withstands continuous operation. The open seal design allows for easy lubrication, extending its service life in demanding environments.

Medical vs Industrial: Where QJ 305 N2MA Bearing Excels
In medical imaging devices, QJ 305 N2MA Bearing offers quiet and precise movement, essential for accurate diagnostics. Its brass cage reduces friction, ensuring consistent performance in sensitive applications.

Automation and Robotics: QJ 305 N2MA Bearing in Action
QJ 305 N2MA Bearing is ideal for robotic arms, where its high-speed capability and load handling are crucial. The lubricated design minimizes maintenance, making it a practical choice for automated systems.

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