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Four-Point Contact Angular Contact Ball Bearings (General) QJ 338 N2MA
Four-Point Contact Angular Contact Ball Bearings (General) QJ 338 N2MA

Four-Point Contact Angular Contact Ball Bearings (General) QJ 338 N2MA

The QJ 338 N2MA is a four-point contact angular contact ball bearing with a 190mm bore and 400mm outer diameter, built from sturdy chrome steel. It handles radial loads up to 157950 lbf and operates smoothly at speeds up to 2800 RPM.

Its single-row design with brass cage ensures durability, 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. Suitable for heavy-duty applications like industrial gearboxes or large machinery where radial loads are significant.

Weighing 49kg, it’s a robust option for demanding environments. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number QJ 338 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 190 mm
  • Bore Dia Tolerance -0.022mm to 0
  • Outer Dia 400 mm
  • Outer Dia Tolerance -0.028mm to 0
  • Width 78 mm
  • Width Tolerance -0.05mm to 0
  • External Diameter On Inner Ring (Large Side Face) 263 mm
  • Internal Diameter On Outer Ring 326 mm
  • Chamfer Dimension 5 mm
  • Distance Pressure Point (a) 207 mm
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Brass
  • Dynamic Radial Load 157950 lbf
  • Static Radial Load 261000 lbf
  • Max Speed 2800 rpm
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Tolerance Class P6 (ABEC-3)
  • ROHS Compliant
  • REACH Compliant
  • Weight 49 kg
  • Price($) 1170.85

Features

How Does QJ 338 N2MA Bearing Handle Heavy Loads?

QJ 338 N2MA Bearing is built with chrome steel rings and balls, offering strong resistance to heavy radial loads.
Its dynamic radial load capacity reaches 157950 lbf, ensuring reliable performance in demanding applications.
The brass cage keeps the balls aligned, reducing wear and extending service life.
With a maximum speed of 2,800 rpm, it balances durability and efficiency.

What Makes QJ 338 N2MA Bearing Durable?

QJ 338 N2MA Bearing features a four-point contact design, distributing loads evenly for enhanced durability.
The chrome steel construction resists wear, making it suitable for high-load applications.
Its brass cage ensures smooth operation, even under heavy radial loads.
The bearing’s P6 tolerance class guarantees precision and reliability.

Why Choose QJ 338 N2MA Bearing for Precision Tasks?

QJ 338 N2MA Bearing is precision-engineered with a single-row design, ideal for high-accuracy applications.
Its four-point contact ensures stable performance under combined loads.
The chrome steel components provide excellent wear resistance and long service life.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

Application

Industrial Uses of QJ 338 N2MA Bearing
QJ 338 N2MA Bearing is commonly used in heavy machinery, such as large gearboxes and industrial presses, where its four-point contact design handles combined radial and axial loads efficiently. The brass cage ensures smooth operation even under high stress.

Where Is QJ 338 N2MA Bearing Used?
In wind turbines, QJ 338 N2MA Bearing supports the main shaft, providing reliable performance in demanding conditions. Its chrome steel construction offers durability against harsh weather and continuous operation.

Built for Heavy-Duty Use: QJ 338 N2MA Bearing
QJ 338 N2MA Bearing excels in mining equipment, where its high load capacity and P6 tolerance ensure precision. The open design allows for easy lubrication, extending service life in abrasive environments.

Automotive vs Aerospace: Applications of QJ 338 N2MA Bearing
In automotive applications, QJ 338 N2MA Bearing is found in large truck transmissions, while in aerospace, it supports landing gear mechanisms. Its metric sizing and interchangeability make it versatile across industries.

Key Fields for QJ 338 N2MA Bearing
QJ 338 N2MA Bearing is ideal for construction machinery, such as cranes and excavators, where its static radial load capacity ensures stability. The temperature range suits both cold and moderately hot working conditions.

Q&A

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