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Super Precision Angular Contact Ball Bearings 7040 ACD/P4ADBB

Super Precision Angular Contact Ball Bearings 7040 ACD/P4ADBB

The 7040 ACD/P4ADBB is a super precision angular contact ball bearing with a 200mm bore and 310mm outer diameter, crafted from high-grade chrome steel. It handles both radial and angular loads, with a dynamic radial load capacity of 103950 lbf.

Its open design and phenolic cage ensure smooth operation at speeds up to 16250 RPM, while the 25° contact angle provides stability. The matched pair arrangement (DB) with light preload offers balanced performance.

Ideal for high-precision applications like machine tool spindles or aerospace components, it operates in temperatures from -30°C to 110°C. Weighing 24.6kg, it’s robust yet designed for precision.

Compatible with SKF bearings, this model meets P4A tolerance standards for exceptional accuracy. The lubricated design reduces maintenance needs.

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Product Parameters

  • Part Number 7040 ACD/P4ADBB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 200 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 310 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 102 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 34.925 mm
  • Ball Qty 21
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 103950 lbf
  • Static Radial Load 165375 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16250 rpm
  • Weight 24.6 kg
Super Precision Angular Contact Ball Bearings 7040 ACD/P4ADBB dimension drawing
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Features

Performance Features of 7040 ACD/P4ADBB Bearing

7040 ACD/P4ADBB Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability under high dynamic radial loads of up to 103,950 lbf.

The phenolic cage in 7040 ACD/P4ADBB Bearing enhances stability and reduces friction during high-speed operation.
With a maximum speed of 16,250 rpm, it maintains precision and efficiency.

7040 ACD/P4ADBB Bearing operates in temperatures from -30°C to 110°C, suitable for various industrial environments.
Its matched arrangement of two bearings provides balanced performance for demanding tasks.

The light preload class B ensures smooth operation while minimising wear over time.
7040 ACD/P4ADBB Bearing’s open design simplifies lubrication and maintenance.

Application

Industrial Uses of 7040 ACD/P4ADBB Bearing
This bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched arrangement of two bearings provides stability for heavy cutting operations.

Where Is 7040 ACD/P4ADBB Bearing Used?
You’ll find 7040 ACD/P4ADBB Bearing in aerospace applications, such as helicopter rotor systems, due to its ability to handle both radial and axial loads. Its phenolic cage offers smooth operation at high speeds.

Built for Heavy-Duty Use: 7040 ACD/P4ADBB Bearing
In large industrial pumps, 7040 ACD/P4ADBB Bearing withstands constant vibration and load variations. The chrome steel construction ensures long service life even in demanding environments.

Automotive vs Aerospace: Applications of 7040 ACD/P4ADBB Bearing
While automotive gearboxes benefit from its precision, 7040 ACD/P4ADBB Bearing truly shines in aircraft landing gear systems. The P4A tolerance class makes it suitable for critical aerospace components.

Perfect Fit for Automation: 7040 ACD/P4ADBB Bearing
Robotic arms in manufacturing lines often use 7040 ACD/P4ADBB Bearing for its reliable angular contact performance. The light preload setting allows for precise movement control in automated systems.

Q&A

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