71909 ACD/P4A 45*68*12 mm Super Precision High Capacity Single Row
Angular Contact Ball Bearing High Speed
Super-precision, high-capacity D design, single row angular contact
ball bearing
The 71909 ACD/P4A bearing,bore diameter is 45 mm, outside diameter is 68 mm,width is
12 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 | 71909 ACD/P4A |
| Bearing Type | Angular Contact |
| Measurement Unit | Metric |
| Dimensions | Inner Bore Diameter (d) | 45 mm |
| Inner Bore Diameter Tolerance | -0.006mm to 0 |
| Outer Bore Diameter (D) | 68 mm |
| Outer Bore Diameter Tolerance | -0.007mm to 0 |
| Width (B) | 12 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 | Grease or Oil |
| Tolerance Class | P4A better than P4 (ABEC-7) |
| Weight | 0.13 kg |
| Matched Arrangement | No |
| Universal Matching Bearing | No |
| Preload | Not applicable |
| Load and Speed | Dynamic Radial Load | 12400 N |
| Static Radial Load | 9000 N |
| Reference Speed For Grease (r/min) | 17,000 rpm |
| Limiting Speed For Oil(r/min) | 28,000 rpm |
What's the Performance Features of 71909 ACD/P4A Bearing?
The 71909 ACD/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 71909 ACD/P4A Bearing?
The 71909 ACD/P4A bearing, as a precision angular contact ball bearing, is known for its
high accuracy, high-speed performance, and high load-carrying
capacity. It is primarily used in the following fields:
1. Machine Tool Equipment
Precision Machine Tool Spindle Systems:
Used in the spindles of CNC machines, grinders, and other
high-precision equipment, providing high-speed and high-rigidity
support .
Tool Posts and Transmission Components:
Such as machine tool turrets and indexing heads that require
high-precision positioning .
2. Industrial Machinery
Printing Equipment:
Including gravure printing machines and letterpress printing
machines, designed to meet the demands of high-speed operation and
precision printing .
Textile and Packaging Machinery:
Such as lace machines, laminating machines, and slitting machines,
suitable for light-load, high-speed applications .
3. Processing and Manufacturing Equipment
Metalworking Equipment:
Including band saws, sawing machines, and drilling rigs, capable of
withstanding cutting forces and vibrations .
Pharmaceutical and Food Machinery:
Such as pharmaceutical equipment, feed processing machines, and
meat processing equipment, meeting hygiene and durability
requirements .
4. Other Applications
Lifting and Transportation Equipment:
Including bridge cranes and permanent magnetic chucks, providing
stable axial load-carrying capacity .
Energy and Environmental Protection Equipment:
Such as aeration equipment, plunger pumps, and chip conveyors,
adaptable to complex working conditions .
| 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!
