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Four-Point Contact Angular Contact Ball Bearings (General) QJ 306 MA
Four-Point Contact Angular Contact Ball Bearings (General) QJ 306 MA

Four-Point Contact Angular Contact Ball Bearings (General) QJ 306 MA

The QJ 306 MA is a four-point contact angular contact ball bearing with a 30mm bore and 72mm outer diameter, crafted from sturdy chrome steel. It manages radial loads up to 11925 lbf and operates smoothly at speeds up to 17000 RPM.

Its single-row design and brass cage ensure durability and low friction, while the open seal allows for easy lubrication. The bearing performs reliably in temperatures ranging from -30°C to 110°C.

This model is interchangeable with SKF bearings, offering a practical replacement option. It’s well-suited for applications like gearboxes or industrial machinery where high radial loads are present.

Weighing 0.42kg, it balances strength and lightweight design. Compliant with RoHS and REACH standards, it’s a safe and dependable choice for various industrial uses.

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Product Parameters

  • Part Number QJ 306 MA
  • 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 30 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 72 mm
  • Outer Dia Tolerance -0.011mm to 0
  • Width 19 mm
  • Width Tolerance -0.05mm to 0
  • External Diameter On Inner Ring (Large Side Face) 40.5 mm
  • Internal Diameter On Outer Ring 58.2 mm
  • Chamfer Dimension 1.1 mm
  • Distance Pressure Point (a) 36 mm
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Brass
  • Dynamic Radial Load 11925 lbf
  • Static Radial Load 9338 lbf
  • Max Speed 17000 rpm
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Tolerance Class P6 (ABEC-3)
  • ROHS Compliant
  • REACH Compliant
  • Weight 0.42 kg

Features

Performance Features of QJ 306 MA Bearing

QJ 306 MA Bearing is designed with a four-point contact system, allowing it to handle both radial and axial loads efficiently.

The chrome steel rings and balls provide durability, while the brass cage ensures smooth operation at high speeds.

With a dynamic radial load capacity of 11925 lbf, it performs reliably in demanding applications.

Its P6 tolerance class guarantees precision, making it suitable for high-performance machinery.

Application

Industrial Uses of QJ 306 MA Bearing
QJ 306 MA 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.

In automotive applications, QJ 306 MA Bearing fits well in gearboxes and wheel hubs, providing reliable performance under varying loads. Its metric sizing makes it a versatile choice for many vehicle models.

For robotics, QJ 306 MA Bearing’s precision and durability make it ideal for robotic arms and automated systems. The chrome steel construction offers long-lasting performance in demanding environments.

Where Is QJ 306 MA Bearing Used?
You’ll find QJ 306 MA Bearing in conveyor systems, where its ability to handle heavy loads keeps operations running smoothly. The open design allows for easy lubrication and maintenance.

In household appliances like washing machines, QJ 306 MA Bearing ensures quiet and efficient operation. Its brass cage reduces friction, extending the bearing’s lifespan.

Built for Heavy-Duty Use: QJ 306 MA Bearing
QJ 306 MA Bearing excels in industrial fans, where its high-speed capability and load handling are crucial. The P6 tolerance class ensures consistent performance.

For medical imaging devices, QJ 306 MA Bearing provides the precision needed for accurate results. Its temperature range makes it suitable for various clinical environments.

Automotive vs Aerospace: Applications of QJ 306 MA Bearing
In cars, QJ 306 MA Bearing supports transmission systems, offering durability and smooth operation. Its four-point contact design handles dynamic loads effectively.

In aerospace, QJ 306 MA Bearing is used in auxiliary systems, where reliability is paramount. The chrome steel construction withstands harsh conditions.

Q&A

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