719 Series Angular Contact Ball Bearings Factory
Engineered for extreme speeds and limited radial space.
Introduction
The 719 series angular contact ball bearings (ultra-light series) offer exceptional stiffness and running accuracy.
Ideal for high-speed CNC machine tool spindles, grinding machines, and precision measuring instruments.
Manufactured to P4 and P2 precision classes.
Why Choose 719 Series Ultra-Light Spindle Bearings?
Compact & Ultra-Light
The extremely small cross-section saves valuable radial space in spindle designs, allowing for larger shaft diameters and increased overall spindle rigidity.
Exceptional High-Speed
Designed with optimized internal geometry and lightweight cages (phenolic resin or PEEK), enabling extremely high dn values with minimal heat generation.
High Precision & Stiffness
Available with 15° (C) and 25° (AC) contact angles. Can be universally matched (Duplex, Triplex) to achieve the exact preload your application demands.
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?
CNC & Electro-Spindles
Ideal for 5-axis machining centers, vertical/horizontal milling machines, and high-end oil-air lubricated motorized spindles. They ensure ultra-precision positioning at extreme RPMs.
Robotics & Rotary Tables
Providing exceptional rigidity for industrial robots, CNC rotary tables, and Direct Drive (DD) motors. The ultra-light design saves critical space without compromising load capacity.
Aerospace & Specialized
Trusted in demanding environments including aerospace applications, vacuum pumps, textile machinery, and new energy permanent magnet synchronous motors.
719 Series vs. 70 Series: Which Spindle Bearing Do You Need?
While both are popular spindle bearings, the 719 series has a significantly smaller cross-section compared to the 70 series (standard light series). Choose the 719 series when radial space is strictly limited but high shaft rigidity is required. Choose the 70 series for general high-speed spindle applications where standard radial space is available.
719 Series
- Significantly smaller cross-section
- Ideal when radial space is strictly limited
- Provides extremely high shaft rigidity
70 Series
- Standard cross-section profile
- For general high-speed spindle applications
- Used where standard radial space is available
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 |
Related Angular Contact Ball Bearing Series
Explore our comprehensive range of high-precision angular contact ball bearings, engineered for exceptional speed, rigidity, and enduring performance in demanding applications.
Frequently Asked Questions
Technical insights and selection guides for our high-precision angular contact ball bearings.
What does "C" and "AC" mean in the 719 series?
"C" indicates a 15° contact angle, which is optimized for maximum speed and lower radial loads. "AC" indicates a 25° contact angle, providing a balance of high speed and higher axial load carrying capacity.
Can I get hybrid ceramic 719 series bearings?
Yes. We offer hybrid ceramic options (with Silicon Nitride Si3N4 balls) for the 719 series. These are ideal for ultra-high-speed spindles, offering lower friction, reduced heat generation, and longer service life.
What is the main difference between angular contact and deep groove ball bearings?
While deep groove ball bearings are primarily designed for pure radial loads, angular contact ball bearings feature an asymmetric cross-section. This unique geometry allows them to support combined loads (significant radial and unidirectional axial loads simultaneously). For precision machine tools requiring high axial rigidity, angular contact is the mandatory choice.
Ready to upgrade your spindle performance?
Contact our engineering team today for a custom quote and technical support.