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71904 ACE/P4A Super Precision High Speed E Design P4A Precision Grade Angular Contact Ball Bearing

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71904 ACE/P4A Super Precision High Speed E Design P4A Precision Grade Angular Contact Ball Bearing

Structure : Angular Contact

Delivery Time : 2-4 weeks

Part Number : 71904 ACE/P4A Angular Contact Ball Bearing

Lubrication : Oil or Grease

Design : High-speed E

Coating : Without

Sealing : Without

Replaceable With : SKF, NSK

Brand Name : CNBTZC or OEM

Model Number : 71904 ACE/P4A

Certification : IATF16949:2016

Place of Origin : China

MOQ : 1000

Price : Please contact us,thanks

Payment Terms : L/C,T/T

Supply Ability : 500000pcs per month

Packaging Details : plastic bag,box,carton,pallet

Ring type : One-piece inner and outer rings

Contact type : Normal contact (two-point contact)

Seals Type : Open (2RZ available)

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71904 ACE/P4A Super Precision Single Row Angular Contact Ball Bearing 7904

71904 ACE/P4A 20×37×9 mm Super Precision High Capacity Single Row Angular Contact Ball Bearing - High Speed

Super-precision, high-speed E design, single row angular contact ball bearing featuring precise dimensions, high static load capacity, P4A precision grade, delivering superior performance and reliability for applications requiring high rotational accuracy and stability.

Specifications & Dimensions
Part Number 71904 ACE/P4A
Bearing Type Angular Contact
Measurement Unit Metric
Inner Bore Diameter (d) 20 mm
Inner Bore Diameter Tolerance -0.005mm to 0
Outer Bore Diameter (D) 37 mm
Outer Bore Diameter Tolerance -0.006mm to 0
Width (B) 9 mm
Width Tolerance -0.2mm to 0
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, oil
Tolerance Class P4A better than P4 (ABEC-7)
Weight 0.036 kg
Load and Speed Ratings
Dynamic Radial Load 4680 N
Static Radial Load 2240 N
Reference Speed For Grease (r/min) 52,000 rpm
Limiting Speed For Oil (r/min) 78,000 rpm
71904 ACE/P4A Super Precision High Speed E Design P4A Precision Grade Angular Contact Ball Bearing 71904 ACE/P4A Super Precision High Speed E Design P4A Precision Grade Angular Contact Ball Bearing
Performance Features
  • Very tight tolerances suitable for precise machinery
  • 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 wide temperature range
Applications

The 71904 ACE/P4A bearing, with its high-speed E-type design, excels in applications requiring high rotational speeds and light loads, such as electric spindles and high-speed machining centers. It enhances stability and machining accuracy in metal cutting machine tools by reducing centrifugal loads and minimizing sensitivity to deformations. This bearing is well-suited for woodworking machinery, plastic and chemical fiber machinery, and printing and packaging industries, where it meets demands for durability, high temperature resistance, and reliable sealing.

Certifications & Services
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

Product Tags:

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super precision angular contact bearing

      

single row ball bearing 7904

      
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71904 ACE/P4A Super Precision High Speed E Design P4A Precision Grade Angular Contact Ball Bearing Images

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