719 Series Angular Contact Ball Bearings
719 series angular contact ball bearings, also known as the ultra-light series, are engineered for extreme speeds, limited radial space, and high running accuracy. They are ideal for CNC machine tool spindles, grinding machines, precision measuring instruments, and other high-speed precision applications.
Ultra-light high-speed bearing solution
Optimized for limited radial space and precision spindle systems.
Engineered for High-Speed Spindle Performance
The 719 series angular contact ball bearings are designed to support stable preload, low heat generation, and high running accuracy in precision spindle systems.
Low Heat Generation
Optimized raceway geometry and lightweight cage options help reduce friction and thermal build-up during continuous high-speed spindle operation.
Stable Preload Control
Available in matched bearing sets to maintain precise preload, axial rigidity, and consistent spindle performance under demanding operating conditions.
High Running Accuracy
Manufactured to P4 and P2 precision grades for low vibration, smooth rotation, and reliable accuracy in grinding and precision measuring equipment.
Uncompromising Precision & Material Standards
As a direct manufacturer, Tedin strictly adheres to international precision standards. Our 719 series bearings are crafted from ultra-clean steel to ensure maximum fatigue life and reliability in CNC spindles.
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Material Purity High-purity bearing steel (100Cr6 / 52100) with Oxygen content ≤ 5 ppm. Hybrid ceramic options (Si3N4) available.
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Precision Class Manufactured strictly to ISO P4 (ABEC 7) and ISO P2 (ABEC 9) tolerances.
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Cage Types Machined phenolic resin (standard for high speed), Polyamide, or customized Brass cages.
Critical Inspection Data
Radial Runout (Kia)
Inner Ring Precision
Surface Roughness
Raceway Finish
Hardness
Heat Treatment
Vibration Level
Acoustic Testing
Where Are 719 Series Spindle Bearings Used?
719 series angular contact ball bearings are widely used in high-speed spindle systems where compact cross-section, stable preload, and high running accuracy are required.
CNC Machine Tool Spindles
Suitable for CNC machining centers, high-speed milling spindles, motorized spindles, and oil-air lubricated electro-spindles requiring precise rotation at high RPM.
- Machining centers
- High-speed milling spindles
- Motorized electro-spindles
Grinding Machine Spindles
Designed for precision grinding spindles where low vibration, low heat generation, and consistent preload are essential for surface finish and dimensional accuracy.
- Cylindrical grinding machines
- Surface grinding spindles
- Tool grinding equipment
Precision Measuring & High-Speed Equipment
Used in precision measuring instruments, inspection devices, textile machinery, vacuum pumps, and other high-speed equipment requiring smooth and accurate rotation.
- Precision measuring instruments
- Inspection and test equipment
- Vacuum pumps and textile machinery
For spindle manufacturers and machine tool builders, Tedin can supply 719 series angular contact ball bearings with P4 or P2 precision grades, matched bearing sets, custom preload, and lubrication options for high-speed spindle applications.
719 Series vs. 70 Series: Which Spindle Bearing Do You Need?
Both 719 and 70 series angular contact ball bearings are used in high-speed spindle systems, but they differ in cross-section, radial space requirements, rigidity, and typical application conditions.
719 Series
Ultra-Light SeriesChoose the 719 series when the spindle design requires a smaller cross-section, reduced bearing mass, and high shaft rigidity in limited radial space.
- Significantly smaller cross-section than the 70 series
- Ideal when radial space is strictly limited
- Lower mass supports high-speed spindle operation
- Commonly used in CNC, grinding, and precision spindle systems
70 Series
Standard Light SeriesChoose the 70 series for general high-speed spindle applications where standard radial space is available and a wider cross-section is acceptable.
- Standard light-series cross-section profile
- Suitable for general high-speed spindle applications
- Used where standard radial space is available
- Good choice for common machine tool spindle designs
Selection tip: If your spindle has limited radial space, the 719 series is usually preferred. If space is not restricted and a standard light-series bearing is suitable, compare with the 70 series angular contact ball bearings.
719 Series Dimensions & Specifications
| Type Number | Dimensions (mm) | Basic Load Rating (kN) | Weight (kg) | Installation Size (mm) | Limiting Speed (r/min) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| d | D | B | Tmin | hmin | Cr | Cor | da | Da | Ta | ra1 | Grease | Oil | ||
| 71920 | 100 | 140 | 20 | 1.1 | 0.6 | 60.6 | 65.5 | 0.8 | 106 | 134 | 1 | 1 | 8500 | 14000 |
| 71922 | 110 | 150 | 20 | 1.1 | 0.6 | 62.4 | 72 | 0.86 | 116 | 144 | 1 | 1 | 8000 | 13000 |
| 71924 | 120 | 150 | 20 | 1.1 | 0.6 | 24.7 | 25.5 | 1.15 | 116 | 144 | 1 | 1 | 10000 | 15000 |
| 71926 | 130 | 180 | 24 | 1.5 | 0.6 | 92.3 | 108 | 1.55 | 137 | 173 | 1.5 | 1.5 | 7000 | 11000 |
| 71928 | 140 | 190 | 24 | 1.5 | 0.6 | 95.6 | 116 | 1.65 | 147 | 183 | 1.5 | 1.5 | 6700 | 10000 |
| 71930 | 150 | 210 | 28 | 2 | 1 | 90 | 120 | 3 | 160 | 200 | 2 | 1 | 6300 | 9500 |
| 71932 | 160 | 220 | 28 | 2 | 1 | 109 | 129 | 3 | 170 | 210 | 2 | 1 | 6000 | 9000 |
| 71934 | 170 | 230 | 28 | 2 | 1 | 110 | 140 | 3.3 | 179 | 221 | 2 | 2 | 5600 | 8500 |
| 71938 | 190 | 260 | 33 | 2 | 1 | 139 | 177 | 4.45 | 199 | 255 | 2 | 2 | 5000 | 7500 |
| 71940 | 200 | 280 | 38 | 2.1 | 1.1 | 150 | 210 | 7.1 | 212 | 268 | 2 | 1 | 4300 | 6000 |
| 71944 | 220 | 300 | 38 | 2.1 | 1.1 | 200 | 250 | 7.2 | 232 | 288 | 2 | 1 | 3800 | 5600 |
| 71948 | 240 | 320 | 38 | 2.1 | 1.1 | 203 | 285 | 8.37 | 252 | 308 | 2 | 1 | 3200 | 4800 |
| 71952 | 260 | 360 | 46 | 2.1 | 1.1 | 242 | 345 | 13.5 | 272 | 348 | 2 | 1 | 1300 | 1800 |
| 71956 | 280 | 380 | 46 | 2.1 | 1.1 | 226 | 337 | 15 | 292 | 368 | 2 | 1 | 1100 | 1600 |
| 71964 | 320 | 440 | 56 | 3 | 1.1 | 350 | 550 | 25.5 | 334 | 426 | 2.5 | 1 | 800 | 1000 |
| 71968 | 340 | 460 | 56 | 3 | 1.1 | 292 | 510 | 27.5 | 354 | 446 | 2.5 | 1 | 800 | 1000 |
| 71972 | 360 | 480 | 56 | 3 | 1.1 | 350 | 600 | 29 | - | - | - | - | 800 | 1000 |
| 71976 | 380 | 520 | 65 | 4 | 1.5 | 369 | 661.5 | 40.5 | 395 | 505 | 3 | 1 | 850 | 1200 |
| 71980 | 400 | 540 | 65 | 4 | 1.5 | 380.7 | 702 | 42 | 415 | 525 | 3 | 1 | 800 | 1100 |
| 71984 | 420 | 560 | 65 | 4 | 1.5 | 327 | 603 | 44.5 | 435 | 545 | 3 | 1 | 700 | 950 |
| 71988 | 440 | 600 | 74 | 4 | 3 | 456.3 | 936 | 61 | 455 | 585 | 3 | 1 | 750 | 1000 |
| 71992 | 460 | 620 | 74 | 4 | 1.5 | 456 | 936 | 58 | 475 | 605 | 3 | 1 | 750 | 900 |
| 719/500 | 530 | 670 | 78 | 5 | 2 | 498 | 1098 | 78 | 518 | 652 | 4 | 1 | 630 | 850 |
| 719/530 | 560 | 710 | 82 | 5 | 2 | 556 | 1206 | 92 | 558 | 692 | 4 | 1 | 1000 | 1500 |
| 719/560 | 600 | 750 | 85 | 5 | 2 | 533 | 1161 | 105 | 578 | 732 | 4 | 2 | 560 | 750 |
| 719/600 | 630 | 800 | 90 | 5 | 2 | 644 | 1557 | 125 | 618 | 782 | 4 | 2 | 900 | 1300 |
| 719/710 | 750 | 950 | 106 | 6 | 3 | 767 | 1980 | 195 | 733 | 927 | 5 | 2 | 800 | 1100 |
719 Series Bearing Manufacturing & Supply Capability
Tedin supports the production, inspection, stocking, and export supply of 719 series angular contact ball bearings for spindle manufacturers, distributors, and OEM customers.
Manufacturing support for high-speed spindle bearing requirements.
Quality control for precision grades, preload, and matched bearing sets.
Batch supply, protective packaging, and international delivery support.
Frequently Asked Questions About 719 Series Bearings
Selection guidance for 719 series angular contact ball bearings used in high-speed CNC spindles, grinding spindles, and precision equipment.
What does C or AC mean in 719 series bearings?
In 719 series angular contact ball bearings, C usually indicates a 15° contact angle, which is suitable for very high-speed operation and lighter axial loads. AC usually indicates a 25° contact angle, offering higher axial load capacity and better rigidity while still maintaining high-speed performance.
Can 719 series bearings be supplied as matched sets?
Yes. Tedin can supply 719 series spindle bearings as duplex, triplex, or multi-bearing matched sets. Common arrangements include DB, DF, and DT configurations, with controlled preload and axial rigidity for high-speed spindle assemblies.
What precision grades are available for 719 series spindle bearings?
719 series angular contact ball bearings are commonly supplied in P4 and P2 precision grades, corresponding to high-precision spindle applications. P4 is suitable for most precision machine tool spindles, while P2 is used where lower runout, lower vibration, and higher running accuracy are required.
Are hybrid ceramic 719 series bearings available?
Yes. Hybrid ceramic 719 series bearings with Si3N4 ceramic balls are available for applications requiring higher speed capability, reduced centrifugal load, lower heat generation, and improved electrical insulation compared with all-steel bearing designs.
How should I choose between 719 and 70 series bearings?
Choose the 719 series when the spindle design requires a smaller cross-section, lower mass, and compact radial space. Choose the 70 series when standard radial space is available and a general high-speed spindle bearing solution is required.
Do you offer stock, custom preload, or OEM supply for 719 bearings?
Yes. Tedin supports standard 719 series bearing supply, matched bearing sets, custom preload, cage material selection, lubrication options, hybrid ceramic designs, and OEM packaging. Availability depends on bearing size, precision grade, preload requirement, and order quantity.
Need Engineering Support?
Still not sure which 719 bearing fits your spindle? Send us your speed, load, and lubrication requirements for a recommendation.