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Four-Point Contact Angular Contact Ball Bearings (General) QJ 1056 N2MA/C4

Four-Point Contact Angular Contact Ball Bearings (General) QJ 1056 N2MA/C4

The QJ 1056 N2MA/C4 is a four-point contact angular contact ball bearing with a 280mm bore and 420mm outer diameter, crafted from sturdy chrome steel. It handles radial loads up to 131625 lbf and operates smoothly at speeds up to 2400 RPM.
Its single-row design with a brass cage ensures durability, while the open construction 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 33.5kg, it’s built to withstand demanding conditions. Compliant with RoHS and REACH standards for safe and environmentally friendly use.

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Product Parameters

  • Part Number QJ 1056 N2MA/C4
  • 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 280 mm
  • Bore Dia Tolerance -0.025mm to 0
  • Outer Dia 420 mm
  • Outer Dia Tolerance -0.033mm to 0
  • Width 65 mm
  • Width Tolerance -0.05mm to 0
  • External Diameter On Inner Ring (Large Side Face) 328 mm
  • Internal Diameter On Outer Ring 372 mm
  • Chamfer Dimension 4 mm
  • Distance Pressure Point (a) 245 mm
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Brass
  • Dynamic Radial Load 131625 lbf
  • Static Radial Load 256500 lbf
  • Max Speed 2400 rpm
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Tolerance Class P6 (ABEC-3)
  • ROHS Compliant
  • REACH Compliant
  • Weight 33.5 kg
Four-Point Contact Angular Contact Ball Bearings (General) QJ 1056 N2MA/C4 dimension drawing
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Features

Performance Features of QJ 1056 N2MA/C4 Bearing

QJ 1056 N2MA/C4 Bearing is built with chrome steel rings and balls, offering robust resistance to heavy radial loads.
Its dynamic radial load capacity reaches 131625 lbf, ensuring dependable performance in demanding applications.

The brass cage maintains ball alignment, reducing friction and extending operational life.
With a maximum speed of 2,400 rpm, it balances durability and efficiency.

QJ 1056 N2MA/C4 Bearing operates smoothly in temperatures ranging from -30° to 110°C.
Its precision P6 tolerance class ensures consistent performance in high-precision machinery.

The open design allows for easy lubrication, enhancing maintenance efficiency.
Its four-point contact design accommodates combined radial and axial loads effectively.

Application

Industrial Uses of QJ 1056 N2MA/C4 Bearing
QJ 1056 N2MA/C4 Bearing is commonly used in heavy machinery like industrial gearboxes and large conveyor systems, where its four-point contact design handles combined radial and axial loads efficiently. The brass cage ensures smooth operation even under high stress.

What Makes QJ 1056 N2MA/C4 Bearing a Preferred Choice?
In wind turbine applications, QJ 1056 N2MA/C4 Bearing’s high dynamic load capacity makes it reliable for rotor support, enduring constant movement and variable forces. Its P6 tolerance class guarantees precision in demanding environments.

Built for Heavy-Duty Use: QJ 1056 N2MA/C4 Bearing
For steel rolling mills, QJ 1056 N2MA/C4 Bearing’s chrome steel construction withstands extreme pressures and temperatures. The open seal design allows for easy lubrication, extending service life in harsh conditions.

Automotive vs Aerospace: Applications of QJ 1056 N2MA/C4 Bearing
In automotive testing rigs, QJ 1056 N2MA/C4 Bearing provides stable performance under simulated loads. Meanwhile, its precision suits aerospace components where reliability is non-negotiable. The metric sizing ensures compatibility across industries.

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