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Super Precision Angular Contact Ball Bearings 71828 ACD/P4DGB

Super Precision Angular Contact Ball Bearings 71828 ACD/P4DGB

The 71828 ACD/P4DGB is a super precision angular contact ball bearing with a 140mm bore and 175mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 15502 lbf and operates smoothly at speeds up to 11000 RPM.

Its 25° contact angle and universal matching design allow flexible arrangements like back-to-back or face-to-face. The phenolic cage ensures quiet, long-lasting performance even under light preload.

This bearing comes lubricated and works well in temperatures from -30°C to 110°C. Ideal for high-precision applications like machine tool spindles or medical equipment.

Weighing 1.6kg, it’s part of a matched set of two bearings. Compliant with P4 tolerance standards for exceptional accuracy.

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Product Parameters

  • Part Number 71828 ACD/P4DGB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 140 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 175 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 36 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 10.319 mm
  • Ball Qty 35
  • Contact Angle 25°
  • Tolerance Class P4
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement Universal matching
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 15502 lbf
  • Static Radial Load 26550 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 1.6 kg
Super Precision Angular Contact Ball Bearings 71828 ACD/P4DGB dimension drawing
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Features

Performance Features of 71828 ACD/P4DGB Bearing

71828 ACD/P4DGB Bearing is crafted with a 25° contact angle, ideal for handling combined radial and axial loads.
Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction for smoother operation.
With a dynamic radial load capacity of 15502 lbf, it performs reliably in high-precision applications.
The P4 tolerance class guarantees exceptional accuracy, making it suitable for demanding machinery.

How Does 71828 ACD/P4DGB Bearing Ensure Precision?

71828 ACD/P4DGB Bearing’s universal matching design allows flexible arrangements like back-to-back or face-to-face.
Its light preload (Class B) minimises vibration, enhancing performance in high-speed applications.
The open seal type facilitates easy lubrication, maintaining optimal operation up to 11,000 rpm.
With a temperature range of -30°C to 110°C, it adapts well to varying working conditions.

Designed for Durability: 71828 ACD/P4DGB Bearing

71828 ACD/P4DGB Bearing’s chrome steel construction resists wear, extending its service life under heavy loads.
Its 35 balls, each 10.319 mm in diameter, distribute loads evenly for consistent performance.
The phenolic cage not only reduces weight but also operates quietly at high speeds.
Weighing just 1.6 kg, it offers a balance of strength and portability for precision equipment.

Application

Ideal for Precision: 71828 ACD/P4DGB Bearing
The 71828 ACD/P4DGB Bearing is widely used in high-precision machine tools, where its 25° contact angle ensures accurate radial and axial load handling.

Its universal matching design makes it versatile for back-to-back or face-to-face arrangements, ideal for complex spindle applications.

In aerospace components, this bearing’s phenolic cage and P4 tolerance class provide reliable performance under demanding conditions.

The chrome steel construction also makes it suitable for medical imaging devices, where smooth rotation is essential.

Where Is 71828 ACD/P4DGB Bearing Used?
You’ll often find the 71828 ACD/P4DGB Bearing in CNC machining centres, thanks to its light preload and high-speed capability.

It’s also a popular choice for robotic arms, where its matched arrangement ensures consistent movement.

For automotive testing equipment, this bearing’s dynamic radial load capacity handles rigorous performance checks.

Its lubricated design further extends service life in industrial automation systems.

Built for Heavy-Duty Use: 71828 ACD/P4DGB Bearing
The 71828 ACD/P4DGB Bearing excels in turbine applications, where its static radial load rating supports sustained operation.

Its phenolic cage reduces friction, making it efficient for high-speed printing machinery.

In precision measuring instruments, the bearing’s P4 tolerance ensures minimal deviation.

The open seal design also simplifies maintenance in harsh manufacturing environments.

Automotive vs Aerospace: Applications of 71828 ACD/P4DGB Bearing
In automotive transmissions, the 71828 ACD/P4DGB Bearing handles angular loads with its durable chrome steel balls.

For aerospace actuators, its universal matching feature allows custom configurations to meet strict standards.

The bearing’s temperature range suits both engine compartments and avionics cooling systems.

Its lightweight phenolic cage also reduces inertia in high-speed rotating assemblies.

Q&A

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