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Four-Point Contact Angular Contact Ball Bearings (General) QJ 209 MA

Four-Point Contact Angular Contact Ball Bearings (General) QJ 209 MA

The QJ 209 MA is a four-point contact angular contact ball bearing with a 45mm bore and 85mm outer diameter, crafted from sturdy chrome steel. It manages radial loads up to 14175 lbf and operates smoothly at speeds up to 14000 RPM.

Its single-row design with a brass cage offers durability and reduces 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, making it a practical choice for replacements. It’s well-suited for applications like gearboxes or industrial machinery where radial and axial loads are present.

Weighing 0.52kg, it’s a robust yet manageable size. Compliant with RoHS and REACH standards, it’s a safe and reliable option for various industrial uses.

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Product Parameters

  • Part Number QJ 209 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 45 mm
  • Bore Dia Tolerance -0.01mm to 0
  • Outer Dia 85 mm
  • Outer Dia Tolerance -0.013mm to 0
  • Width 19 mm
  • Width Tolerance -0.05mm to 0
  • External Diameter On Inner Ring (Large Side Face) 54.5 mm
  • Internal Diameter On Outer Ring 72 mm
  • Chamfer Dimension 1.1 mm
  • Distance Pressure Point (a) 46 mm
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Brass
  • Dynamic Radial Load 14175 lbf
  • Static Radial Load 12600 lbf
  • Max Speed 14000 rpm
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Tolerance Class P6 (ABEC-3)
  • ROHS Compliant
  • REACH Compliant
  • Weight 0.52 kg
Four-Point Contact Angular Contact Ball Bearings (General) QJ 209 MA dimension drawing
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Features

Performance Features of QJ 209 MA Bearing

QJ 209 MA Bearing features a four-point contact design, allowing it to handle both radial and axial loads efficiently.
Its chrome steel rings and balls provide excellent durability, ensuring reliable performance under high stress.
The brass cage maintains ball alignment, reducing friction and wear during operation.
With a maximum speed of 14,000 rpm, it is suitable for high-speed applications.

Application

Industrial Uses of QJ 209 MA Bearing
QJ 209 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 higher speeds.

Where Is QJ 209 MA Bearing Used?
In automotive applications, QJ 209 MA Bearing fits well in wheel hubs and transmissions, offering reliable performance under varying loads. Its metric dimensions make it a versatile choice for many vehicle models.

Built for Heavy-Duty Use: QJ 209 MA Bearing
This bearing excels in conveyor systems, where its chrome steel construction withstands continuous use. The open seal design allows for easy lubrication, extending its service life.

Automotive vs Aerospace: Applications of QJ 209 MA Bearing
While QJ 209 MA Bearing is popular in car suspensions, it also finds use in aircraft components due to its precision and durability. The P6 tolerance class ensures consistent performance in both fields.

Perfect Fit for Automation: QJ 209 MA Bearing
In robotic arms, QJ 209 MA Bearing provides the necessary stability for precise movements. Its brass cage reduces friction, making it ideal for high-speed automation tasks.

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