7904/QC004193 20x37x9mm High-Precision Angular Contact Ball Bearing
The 7904/QC004193 is a premium ultra-precision angular contact ball bearing with standard dimensions 20x37x9mm, engineered for high-speed, high-accuracy industrial applications. Built with strict P4/ISO Class 4 precision tolerances, this bearing delivers exceptional rotational stability, minimal runout, and reliable load performance—making it a top choice for critical machinery alongside precision bearings like the SV796 CP4 L2TA XL001 CP bearing, SV796 ultra-precision bearing, and otherCP4 precision angular contact ball bearing models.
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| Single-Row Angular Contact Ball Bearing |
| Inner Diameter (d): 20mm | Outer Diameter (D): 37mm | Width (B): 9mm |
| P4/ISO Class 4 (ABEC 7 equivalent) |
| 15° (C-type, high-speed optimized) |
| High-nitrogen stainless steel (SV30/X30CrMoN15-1) or premium 100Cr6 bearing steel |
| Full complement ball (no cage) or lightweight engineered cage |
| Open design (custom sealed options available) |
| Up to 65,000 RPM (oil lubrication, high-speed operation) |
| CNC spindles, model jet turbines, precision motors, medical devices, high-speed instrumentation |
The 7904/QC004193 is primarily associated with HQW (German precision bearing brand), a leading manufacturer of ultra-precision bearings for aerospace and high-speed machinery. This model aligns with the quality and performance standards of top precision bearing brands, matching the reliability of the GRW SV796 bearing and other 6x15x5mm bearing precision variants.
Top Alternative & Replacement Brands
For seamless cross-reference and inventory flexibility, the 7904/QC004193 can be directly replaced by the following industry-leading precision bearing brands (same 20x37x9mm dimensions, P4 precision):
- SKF: S71904 ACEGA/P4A, 7904 CY series precision bearings
- NSK: 7904CTYNSP4, 71904DU ultra-precision angular contact bearings
- NACHI: 7904 CYU/GLP4 (ABEC 7 high-precision variant)
- FAG: Standard 7904-P4 precision spindle bearings
- GRW: Compatible with SV796 series CP4 precision bearings (size-matched alternatives)
Key Applications of 7904/QC004193 Bearing
It is widely deployed alongside CNC spindle bearing and high-speed precision bearing models, serving critical industries including:
CNC Machine Tools & Spindles
Aerospace & Model Turbines
Medical & Laboratory Equipment
High-Speed Motors & Actuators
Optical & Measuring Instruments
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GRW GMN HQW ZWICKER 7002/QC004148 Bearings 7001/QC003966 7000/QC004191 7904/QC004193 Turbojet Engine Bearings
Need a Quote?
Contact shenzhen sefuto tech co ltd for genuine 7904/QC004193 bearings, custom lubrication options, or matched SV796 CP4 L2TA XL001 CP precision bearing solutions. We offer fast shipping and technical support for all high-precision bearing needs.
