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Four-Point Contact Angular Contact Ball Bearings (General) QJ 1040 N2MA
Four-Point Contact Angular Contact Ball Bearings (General) QJ 1040 N2MA

Four-Point Contact Angular Contact Ball Bearings (General) QJ 1040 N2MA

The QJ 1040 N2MA is a four-point contact angular contact ball bearing, measuring 200mm by 310mm by 51mm. Made from chrome steel with a brass cage, it’s built to handle heavy radial loads up to 87750 lbf.

Its single-row design and open seal type make it easy to maintain, while the P6 tolerance ensures precise operation. The bearing can reach speeds up to 3200 RPM and works in temperatures from -30°C to 110°C.

This model is interchangeable with SKF bearings, offering a reliable alternative for replacements. Ideal for industrial machinery or heavy equipment where high radial loads are common.

Weighing 15kg, it’s a sturdy choice for demanding applications. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number QJ 1040 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 200 mm
  • Bore Dia Tolerance -0.022mm to 0
  • Outer Dia 310 mm
  • Outer Dia Tolerance -0.025mm to 0
  • Width 51 mm
  • Width Tolerance -0.05mm to 0
  • External Diameter On Inner Ring (Large Side Face) 238 mm
  • Internal Diameter On Outer Ring 271 mm
  • Chamfer Dimension 2.1 mm
  • Distance Pressure Point (a) 179 mm
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Brass
  • Dynamic Radial Load 87750 lbf
  • Static Radial Load 139500 lbf
  • Max Speed 3200 rpm
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Tolerance Class P6 (ABEC-3)
  • ROHS Compliant
  • REACH Compliant
  • Weight 15 kg

Features

Performance Features of QJ 1040 N2MA Bearing

QJ 1040 N2MA Bearing is built with chrome steel rings and balls, offering strong resistance to radial loads.
Its dynamic radial load capacity reaches 87,750 lbf, ensuring reliable performance in heavy-duty applications.

The brass cage maintains ball alignment, reducing friction and extending service life.
With a maximum speed of 3,200 rpm, it balances durability and efficiency for industrial use.

QJ 1040 N2MA Bearing operates smoothly in temperatures from -30° to 110°C, adapting to various environments.
Its precision P6 tolerance class ensures consistent performance in demanding conditions.

Application

Industrial Uses of QJ 1040 N2MA Bearing
QJ 1040 N2MA Bearing is commonly used in heavy machinery, such as cranes and construction equipment, 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 1040 N2MA Bearing Used?
In wind turbines, QJ 1040 N2MA Bearing supports the rotor shaft, providing stability and durability in harsh weather conditions. Its P6 tolerance class ensures precise alignment for long-term reliability.

Built for Heavy-Duty Use: QJ 1040 N2MA Bearing
QJ 1040 N2MA Bearing excels in industrial gearboxes, where its chrome steel rings and balls withstand high dynamic loads. The open seal design allows for easy lubrication, reducing maintenance downtime.

Automotive vs Aerospace: Applications of QJ 1040 N2MA Bearing
In automotive applications, QJ 1040 N2MA Bearing is found in heavy-duty transmissions, while in aerospace, it supports landing gear mechanisms. Its metric sizing ensures compatibility across global standards.

Q&A

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