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Super Precision Angular Contact Ball Bearings S71911 CE/P4ADBB

Super Precision Angular Contact Ball Bearings S71911 CE/P4ADBB

The S71911 CE/P4ADBB is a super precision angular contact ball bearing with a 55mm bore and 80mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 5648 lbf and operates smoothly at speeds up to 34,000 RPM.

Its sealed design and grease lubrication make it low-maintenance, while the phenolic cage ensures quiet, long-lasting performance. The 15° contact angle and matched pair arrangement (DB) provide excellent stability for angular loads.

This bearing is ideal for high-precision applications like machine tool spindles or robotics, where accuracy and speed are crucial. It works in temperatures from -30°C to 110°C and meets P4A tolerance standards.

Weighing 0.35kg, it’s a robust yet lightweight choice for demanding setups. Interchangeable with SKF bearings, it offers a reliable replacement option.

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Product Parameters

  • Part Number S71911 CE/P4ADBB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 55 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 80 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 26 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.938 mm
  • Ball Qty 21
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Sealed
  • 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 5648 lbf
  • Static Radial Load 4770 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 34000 rpm
  • Weight 0.35 kg
Super Precision Angular Contact Ball Bearings S71911 CE/P4ADBB dimension drawing
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Features

Performance Features of S71911 CE/P4ADBB Bearing

S71911 CE/P4ADBB Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.

The chrome steel construction ensures durability and resistance to wear under dynamic radial loads up to 5648 lbf.

With a phenolic cage, it maintains ball alignment and reduces friction, enhancing operational smoothness.

Its sealed design and grease lubrication minimise maintenance while extending service life.

How Does S71911 CE/P4ADBB Bearing Achieve High-Speed Performance?

S71911 CE/P4ADBB Bearing reaches speeds up to 34,000 rpm, thanks to its precision P4A tolerance class.

The matched arrangement of two bearings ensures stability and balanced load distribution.

Its light preload (Class B) reduces vibration, making it ideal for high-speed applications.

The phenolic cage and chrome steel balls contribute to its reliable, low-friction operation.

Engineered for Precision: S71911 CE/P4ADBB Bearing

S71911 CE/P4ADBB Bearing’s tight tolerances (bore and outer dia ±0.004mm) ensure precise alignment.

Its 21-ball design with 7.938 mm diameter balls enhances load capacity and smooth rotation.

The sealed construction protects against contaminants, maintaining performance in harsh conditions.

Operating between -30°C to 110°C, it remains reliable across a wide temperature range.

Steel vs Ceramic Bearings: Strengths of S71911 CE/P4ADBB Bearing

S71911 CE/P4ADBB Bearing uses chrome steel for rings and balls, offering a balance of strength and cost-efficiency.

Its phenolic cage provides lightweight stability, reducing centrifugal force at high speeds.

With a dynamic radial load of 5648 lbf, it handles demanding applications without compromising precision.

The grease lubrication and sealed design ensure long-term performance with minimal upkeep.

Application

Industrial Uses of S71911 CE/P4ADBB Bearing
S71911 CE/P4ADBB Bearing is commonly used in high-speed machine tools, where its precision angular contact design ensures accurate spindle rotation. The sealed construction helps maintain performance in environments with dust or debris.

What Makes S71911 CE/P4ADBB Bearing a Preferred Choice?
In robotics, S71911 CE/P4ADBB Bearing provides smooth motion control for articulated arms, thanks to its light preload and matched arrangement. The phenolic cage reduces friction, enhancing efficiency in repetitive tasks.

Built for Heavy-Duty Use: S71911 CE/P4ADBB Bearing
For automotive applications like electric motor shafts, S71911 CE/P4ADBB Bearing handles combined radial and axial loads reliably. Its grease lubrication ensures long service life even at high rotational speeds.

Medical vs Industrial: Where S71911 CE/P4ADBB Bearing Excels
In medical imaging devices, S71911 CE/P4ADBB Bearing offers quiet operation and minimal vibration, critical for clear diagnostics. Industrial pumps benefit from its robust construction and tolerance for continuous operation.

Perfect Fit for Automation: S71911 CE/P4ADBB Bearing
S71911 CE/P4ADBB Bearing is ideal for CNC machinery, where its P4A tolerance class guarantees precision. The chrome steel rings and balls provide durability under heavy cutting forces.

Q&A

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