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Super Precision Angular Contact Ball Bearings 7048 ACD/P4ATBTB

Super Precision Angular Contact Ball Bearings 7048 ACD/P4ATBTB

The 7048 ACD/P4ATBTB is a super precision angular contact ball bearing with a 240mm bore and 360mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 157950 lbf and operates smoothly at speeds up to 7500 RPM.

With a 25° contact angle and open design, it offers excellent performance in high-precision applications. The phenolic cage ensures durability and reduced friction, while the light preload (Class B) enhances stability.

This set includes three matched bearings arranged in a TBT configuration, ideal for heavy-duty machinery like spindles or CNC equipment. It works reliably in temperatures from -30°C to 110°C.

Weighing 51.4kg, it’s a robust choice for industrial use. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for easy replacements.

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Product Parameters

  • Part Number 7048 ACD/P4ATBTB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 240 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 360 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 168 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 38.1 mm
  • Ball Qty 22
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 3 bearings <>> TBT
  • Number Of Bearings In Matched Set 3
  • 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 157950 lbf
  • Static Radial Load 315000 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 7500 rpm
  • Weight 51.4 kg
Super Precision Angular Contact Ball Bearings 7048 ACD/P4ATBTB dimension drawing
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Features

Performance Features of 7048 ACD/P4ATBTB Bearing

7048 ACD/P4ATBTB Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls provide excellent durability under high radial loads up to 157,950 lbf.
The phenolic cage ensures smooth operation and reduces friction, even at speeds up to 7,500 rpm.
With a matched arrangement of three bearings, it offers enhanced stability and precision.

How Does 7048 ACD/P4ATBTB Bearing Achieve Precision?

7048 ACD/P4ATBTB Bearing meets P4A tolerance standards, ensuring high precision in demanding applications.
The light preload (Class B) minimises deflection while maintaining smooth rotation.
Its open design allows for easy lubrication, extending service life in various conditions.
The 22 chrome steel balls, each 38.1 mm in diameter, contribute to its impressive load capacity.

Built for Reliability: 7048 ACD/P4ATBTB Bearing

7048 ACD/P4ATBTB Bearing operates reliably in temperatures ranging from -30°C to 110°C.
The phenolic cage material resists wear and reduces noise during high-speed operation.
With a static radial load capacity of 315,000 lbf, it handles heavy-duty applications with ease.
Its dimensional stability is ensured by tight tolerances on bore and outer diameters.

Steel vs Ceramic Bearings: Strengths of 7048 ACD/P4ATBTB Bearing

7048 ACD/P4ATBTB Bearing uses chrome steel for both rings and balls, offering excellent strength-to-weight ratio.
This material choice provides superior fatigue resistance compared to ceramic alternatives in heavy-load scenarios.
The 51.4 kg weight reflects its robust construction for industrial applications.
Its lubricated design further enhances performance and longevity in continuous operation.

Why Choose 7048 ACD/P4ATBTB Bearing for Precision Tasks?

7048 ACD/P4ATBTB Bearing’s triple-bearing matched set (TBT arrangement) delivers exceptional rotational accuracy.
The tight width tolerance (-0.2mm to 0) ensures perfect fitment in precision machinery.
Its dynamic radial load capacity makes it suitable for high-performance spindle applications.
The combination of chrome steel components and phenolic cage provides optimal performance balance.

Application

Industrial Uses of 7048 ACD/P4ATBTB Bearing
This bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched arrangement of three bearings provides stability for heavy cutting operations.

In aerospace applications, 7048 ACD/P4ATBTB Bearing supports helicopter transmissions, handling both radial and axial loads efficiently. Its phenolic cage offers lightweight durability, ideal for aviation components.

For robotics, 7048 ACD/P4ATBTB Bearing enables smooth movement in articulated arms, thanks to its P4A tolerance class. The open design allows for easy lubrication, extending service life in automated systems.

Where Is 7048 ACD/P4ATBTB Bearing Used?
You’ll find this bearing in wind turbine gearboxes, where its high dynamic load capacity handles variable forces. The chrome steel construction resists wear in harsh outdoor conditions.

It’s also fitted in medical imaging devices like CT scanners, ensuring precise rotation of gantry components. The light preload reduces vibration for clearer diagnostic results.

Built for Heavy-Duty Use: 7048 ACD/P4ATBTB Bearing
In steel rolling mills, this bearing withstands extreme loads while maintaining alignment. The 25° contact angle distributes forces evenly across the bearing set.

For paper manufacturing equipment, 7048 ACD/P4ATBTB Bearing runs reliably at high speeds. Its metric sizing simplifies replacement in European machinery.

Automotive vs Aerospace: Applications of 7048 ACD/P4ATBTB Bearing
In racing car wheel hubs, this bearing reduces friction for better performance. The phenolic cage handles high temperatures from braking systems.

For aircraft landing gear, 7048 ACD/P4ATBTB Bearing manages shock loads during touchdown. Its precision grinding ensures smooth operation under varying pressures.

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