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Four-Point Contact Angular Contact Ball Bearings (General) QJ 336 N2MA

Four-Point Contact Angular Contact Ball Bearings (General) QJ 336 N2MA

The QJ 336 N2MA is a four-point contact angular contact ball bearing with a 180mm bore and 380mm outer diameter, built from sturdy chrome steel. It manages radial loads up to 153000 lbf and operates smoothly at speeds up to 3000 RPM.
Its single-row design and brass cage ensure durability and reliable performance in demanding conditions. The open seal type allows for easy lubrication and maintenance.
This bearing is interchangeable with SKF models, making it a practical choice for replacements. Suitable for heavy-duty applications like industrial gearboxes or large machinery where radial loads are significant.
Weighing 47.5kg, it’s robust yet manageable for its size, and compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number QJ 336 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 180 mm
  • Bore Dia Tolerance -0.018mm to 0
  • Outer Dia 380 mm
  • Outer Dia Tolerance -0.028mm to 0
  • Width 75 mm
  • Width Tolerance -0.05mm to 0
  • External Diameter On Inner Ring (Large Side Face) 252 mm
  • Internal Diameter On Outer Ring 309 mm
  • Chamfer Dimension 4 mm
  • Distance Pressure Point (a) 196 mm
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Brass
  • Dynamic Radial Load 153000 lbf
  • Static Radial Load 247500 lbf
  • Max Speed 3000 rpm
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Tolerance Class P6 (ABEC-3)
  • ROHS Compliant
  • REACH Compliant
  • Weight 47.5 kg
Four-Point Contact Angular Contact Ball Bearings (General) QJ 336 N2MA dimension drawing
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Features

Performance Features of QJ 336 N2MA Bearing

QJ 336 N2MA Bearing is designed with chrome steel rings and balls, offering strong resistance to radial loads.
Its dynamic radial load capacity reaches 153000 lbf, ensuring reliable performance in heavy-duty applications.

The brass cage maintains ball alignment, reducing friction and extending operational life.
With a maximum speed of 3,000 rpm, it balances durability and efficiency for industrial use.

QJ 336 N2MA Bearing operates smoothly in temperatures ranging from -30° to 110 °C.
Its open design allows for easy lubrication, ensuring consistent performance over time.

Application

Key Fields for QJ 336 N2MA Bearing
QJ 336 N2MA Bearing is commonly used in heavy industrial machinery, such as large gearboxes and rolling mills, where its four-point contact design efficiently handles combined radial and axial loads. The brass cage ensures smooth operation even under high stress.

Where Is QJ 336 N2MA Bearing Used?
In wind turbines, QJ 336 N2MA Bearing supports the main shaft, providing stability and durability in harsh weather conditions. Its chrome steel construction offers excellent resistance to wear and fatigue.

Built for Heavy-Duty Use: QJ 336 N2MA Bearing
QJ 336 N2MA Bearing is ideal for construction equipment like cranes, where its high load capacity and precision tolerance ensure reliable performance. The open design allows for easy lubrication and maintenance.

Automotive vs Aerospace: Applications of QJ 336 N2MA Bearing
In automotive applications, QJ 336 N2MA Bearing is found in large truck transmissions, while in aerospace, it supports landing gear mechanisms. Its metric sizing and P6 tolerance make it versatile for various industries.

Perfect Fit for Automation: QJ 336 N2MA Bearing
QJ 336 N2MA Bearing works well in robotic arms and automated assembly lines, where its ability to handle multi-directional loads improves efficiency. The lubricated design reduces friction for smoother movement.

Q&A

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