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Four-Point Contact Angular Contact Ball Bearings (General) QJ 234 N2MA
Four-Point Contact Angular Contact Ball Bearings (General) QJ 234 N2MA

Four-Point Contact Angular Contact Ball Bearings (General) QJ 234 N2MA

The QJ 234 N2MA is a four-point contact angular contact ball bearing, measuring 170mm in bore diameter and 310mm in outer diameter, with a width of 52mm. Made from durable chrome steel, it handles radial loads up to 102375 lbf and operates smoothly at speeds up to 3400 RPM.

Its single-row design and brass cage ensure reliable performance under heavy loads, while the open seal allows for easy lubrication. The bearing is suitable for temperatures ranging from -30°C to 110°C.

This model is interchangeable with SKF bearings, making it a practical choice for replacements. Ideal for industrial machinery and heavy-duty applications where high radial loads are common.

Weighing 19.5kg, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it meets stringent safety and environmental requirements.

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Product Parameters

  • Part Number QJ 234 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 170 mm
  • Bore Dia Tolerance -0.018mm to 0
  • Outer Dia 310 mm
  • Outer Dia Tolerance -0.025mm to 0
  • Width 52 mm
  • Width Tolerance -0.05mm to 0
  • External Diameter On Inner Ring (Large Side Face) 204 mm
  • Internal Diameter On Outer Ring 243 mm
  • Chamfer Dimension 4 mm
  • Distance Pressure Point (a) 168 mm
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Brass
  • Dynamic Radial Load 102375 lbf
  • Static Radial Load 162000 lbf
  • Max Speed 3400 rpm
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Tolerance Class P6 (ABEC-3)
  • ROHS Compliant
  • REACH Compliant
  • Weight 19.5 kg

Features

How Does QJ 234 N2MA Bearing Handle Heavy Radial Loads?

QJ 234 N2MA Bearing is built with chrome steel rings and balls, offering strong resistance to heavy radial loads.
Its dynamic radial load capacity reaches 102375 lbf, ensuring dependable performance in demanding applications.

The brass cage maintains ball alignment, reducing friction and extending operational life.
With a maximum speed of 3,400 rpm, it balances durability and efficiency for industrial use.

QJ 234 N2MA Bearing operates smoothly in temperatures from -30° to 110°C, making it versatile for various environments.
Its precision P6 tolerance class ensures consistent performance in high-precision machinery.

Application

Key Fields for QJ 234 N2MA Bearing
QJ 234 N2MA Bearing is commonly used in industrial equipment like heavy-duty gearboxes and large conveyor systems, where its four-point contact design efficiently handles combined radial and axial loads.
The brass cage ensures smooth operation even under high stress, making it suitable for continuous use in demanding environments.

What Makes QJ 234 N2MA Bearing a Preferred Choice?
In automotive applications, QJ 234 N2MA Bearing supports large drivetrain components, providing stability and durability for long-term performance.
Its metric sizing and P6 tolerance class make it a reliable option for precision engineering in European and Asian vehicle designs.

Built for Heavy-Duty Use: QJ 234 N2MA Bearing
For automation and robotics, QJ 234 N2MA Bearing offers precise movement in robotic arms and automated assembly lines, thanks to its chrome steel construction.
The open seal type allows for easy lubrication, ensuring minimal maintenance in high-speed operations.

Medical vs Industrial: Where QJ 234 N2MA Bearing Excels
In medical imaging devices, QJ 234 N2MA Bearing provides consistent performance due to its high load capacity and temperature stability.
However, it truly shines in industrial settings like steel mills, where its robust design handles extreme conditions effortlessly.

Practical Applications of QJ 234 N2MA Bearing
QJ 234 N2MA Bearing is ideal for wind turbine systems, where its ability to manage varying loads ensures reliable energy generation.
The lubricated design reduces friction, extending the bearing’s lifespan even in harsh outdoor environments.

Q&A

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