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Four-Point Contact Angular Contact Ball Bearings (General) QJ 208 MA

Four-Point Contact Angular Contact Ball Bearings (General) QJ 208 MA

The QJ 208 MA is a four-point contact angular contact ball bearing with a 40mm bore and 80mm outer diameter, crafted from sturdy chrome steel. It manages radial loads up to 12600 lbf and operates smoothly at speeds up to 15000 RPM.
Its brass cage enhances durability, while the open design simplifies 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. Suitable for applications like pumps or gearboxes where radial and axial loads are present.
Weighing 0.45kg, it balances strength and compactness. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number QJ 208 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 40 mm
  • Bore Dia Tolerance -0.01mm to 0
  • Outer Dia 80 mm
  • Outer Dia Tolerance -0.011mm to 0
  • Width 18 mm
  • Width Tolerance -0.05mm to 0
  • External Diameter On Inner Ring (Large Side Face) 49.5 mm
  • Internal Diameter On Outer Ring 66 mm
  • Chamfer Dimension 1.1 mm
  • Distance Pressure Point (a) 42 mm
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Brass
  • Dynamic Radial Load 12600 lbf
  • Static Radial Load 11025 lbf
  • Max Speed 15000 rpm
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Tolerance Class P6 (ABEC-3)
  • ROHS Compliant
  • REACH Compliant
  • Weight 0.45 kg
Four-Point Contact Angular Contact Ball Bearings (General) QJ 208 MA dimension drawing
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Features

Why Choose QJ 208 MA Bearing for Precision Tasks?

QJ 208 MA Bearing features a four-point contact design, ensuring precise load distribution and smooth operation.
Its chrome steel rings and balls provide excellent durability, while the brass cage enhances alignment and reduces friction.
With a dynamic radial load capacity of 12600 lbf, it handles demanding applications with ease.
The bearing operates efficiently at speeds up to 15,000 rpm, making it ideal for high-performance machinery.

Application

Industrial Uses of QJ 208 MA Bearing
QJ 208 MA Bearing is commonly used in machine tools, where its four-point contact design handles both radial and axial loads efficiently. The brass cage ensures smooth operation even at high speeds, making it suitable for precision equipment.

Where Is QJ 208 MA Bearing Used?
In automotive applications, QJ 208 MA Bearing supports gearboxes and wheel hubs, providing reliable performance under varying loads. Its metric sizing and P6 tolerance make it a versatile choice for European and Asian vehicle models.

Built for Heavy-Duty Use: QJ 208 MA Bearing
QJ 208 MA Bearing excels in conveyor systems, where its chrome steel construction withstands continuous operation. The open design allows for easy lubrication, extending its service life in demanding environments.

Automotive vs Aerospace: Applications of QJ 208 MA Bearing
In automotive systems, QJ 208 MA Bearing ensures smooth gear shifting, while in aerospace, it supports auxiliary equipment with its high-speed capability. The brass cage adds durability in both scenarios.

Perfect Fit for Automation: QJ 208 MA Bearing
QJ 208 MA Bearing is ideal for robotic arms, where its precise load handling and high-speed performance are crucial. The lubricated design reduces friction, ensuring consistent operation in automated systems.

Q&A

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