71911 ACE/P4A 55*80*13 mm Super Precision High Capacity Single Row
Angular Contact Ball Bearing
Super-precision, high-speed E design, single row angular contact
ball bearing
The 71911 ACE/P4A bearing,bore diameter is 55 mm, outside diameter is 80 mm,width is
13 mm,featuring precise dimensions, high static load capacity, P4A
precision grade, delivers superior performance and reliability for
applications requiring high rotational accuracy and stability.
| Part Number | 71911 ACE/P4A |
| Bearing Type | Angular Contact |
| Measurement Unit | Metric |
| Dimensions | Inner Bore Diameter (d) | 55 mm |
| Inner Bore Diameter Tolerance | -0.007mm to 0 |
| Outer Bore Diameter (D) | 80 mm |
| Outer Bore Diameter Tolerance | -0.007mm to 0 |
| Width (B) | 13 mm |
| Width Tolerance | -0.2mm to 0 |
| Specifications | Contact Angle | 25° (15°,40° Available) |
| Material | Chrome Steel |
| Cage Material | Phenolic |
| Number of Rows | 1 Single Row |
| Seal Type | Open |
| Temperature Range | -30°C to 150°C |
| Lubrication | Oil,Grease |
| Tolerance Class | P4A better than P4 (ABEC-7) |
| Weight | 0.17 kg |
| Matched Arrangement | No |
| Universal Matching Bearing | No |
| Preload | Not applicable |
| Load and Speed | Dynamic Radial Load | 14600 N |
| Static Radial Load | 10200 N |
| Reference Speed For Grease (r/min) | 21,000 rpm |
| Limiting Speed For Oil(r/min) | 32,000 rpm |
What's the Performance Features of 71911 ACE/P4A Bearing?
The 71911 ACE/P4A angular contact ball bearing is engineered for
high-precision and high-performance applications, featuring very
tight tolerances suitable for precise machinery, the ability to
handle both radial and axial loads simultaneously, high-speed
operation with stability, low torque and friction for energy
efficiency, enhanced rigidity for accuracy under heavy loads,
durability with extended service life, effective performance across
a wide temperature range.
What's the Applications of the 71911 ACE/P4A Bearing?
The 71911 ACE/P4A bearing is a high-precision angular contact ball bearing, ideal
for high-speed and demanding applications. Here are its key uses:
Machine Tool Spindles
Used in CNC machines and spindle systems for grinding, milling, and
turning operations.
Precision Instruments & Measurement Equipment
Applied in CMMs (Coordinate Measuring Machines), optical
instruments, and high-precision rotary tables.
Aerospace & Defense
Found in aircraft engine auxiliary systems, missile guidance
systems, and gyro stabilization platforms.
Industrial Robots & Automation
Installed in robotic joints (e.g., collaborative robot wrists) and
precision reducers for accurate motion control.
Medical & Semiconductor Equipment
Utilized in rotating components of CT/MRI scanners, wafer cutting
spindles, and lithography motion stages.
High-Speed Motors & Turbo Machinery
Suitable for electric spindles, turbo molecular pumps, and
compressors where high-speed performance is critical.
| CERTIFICATE | RoHS & REACH, IATF16949:2016 |
| Feature | High Speed and Stiffness,High Running Accuracy,High Load Carrying
Capacity |
| Service | OEM&ODM Customized Services |
| Samples | Please Contact Us |
| Service | Online Support,Professional Service |
| Size | Standard,For custom sizes ,please contact us |
| Factory Manufacturer | Yes |
If you need more detailed information , feel free to ask!
