719 Series Angular Contact Ball Bearings
719 series angular contact ball bearings are ultra-light precision bearings for high-speed spindle systems, limited radial space, and demanding machine tool bearing applications.
Ultra-Light High-Speed Bearing Solution
Optimized for compact spindle systems and precision rotation.
719 Series Angular Contact Ball Bearings Overview
The 719 series is an ultra-light angular contact ball bearing series designed for high-speed spindle systems, compact bearing arrangements, and precision rotating equipment.
Compact Bearing Design for Precision Spindle Applications
719 series angular contact ball bearings have a smaller cross-section than standard light-series angular contact bearings. This ultra-light structure helps reduce bearing mass, save radial installation space, and support stable high-speed rotation.
They are commonly used in CNC machine tool spindles, grinding machine spindles, motorized spindles, precision measuring instruments, and other high-speed equipment where low heat generation, stable preload, and high running accuracy are required.
Tedin can supply 719 series bearings with P4 or P2 precision grades, matched bearing sets, different contact angles, cage options, ceramic ball options, and lubrication solutions according to spindle operating conditions.
Compact Cross-Section
Suitable for spindle designs with limited radial installation space.
High-Speed Performance
Lower bearing mass helps reduce friction and heat generation at high speed.
P4 / P2 Precision
Available for applications requiring smooth rotation and high running accuracy.
Matched Bearing Sets
Optional matching for preload control, axial rigidity, and spindle stability.
Selection note: Choose 719 series bearings when your spindle requires an ultra-light bearing arrangement, limited radial space, high speed capability, and precise preload control.
Why Use 719 Series Bearings in High-Speed Spindles?
The 719 series is usually selected when the spindle has limited radial space but still needs high speed, stable preload, and good running accuracy.
Less Heat in Continuous Running
The smaller cross-section reduces bearing mass. This helps control friction and heat when the spindle runs at high speed for long periods.
Easier Preload Matching
719 series bearings can be supplied in matched sets for controlled preload, axial rigidity, and repeatable assembly results.
Good Accuracy in Limited Space
P4 and P2 grades are available for applications where runout, vibration, and spindle temperature need to be kept under control.
Material, Precision Grade and Inspection Items
For high-speed spindle bearings, material cleanliness, preload matching, runout, and vibration control all affect the final spindle performance. TEDIN can supply 719 series bearings with different precision grades, cage types, and inspection requirements.
Manufacturing Options for 719 Series Bearings
The 719 series is often used in compact spindle designs. Before production, bearing size, contact angle, precision grade, preload, cage type, and lubrication method should be confirmed according to the spindle working condition.
- Material options: high-purity bearing steel such as 100Cr6 / 52100. Hybrid ceramic ball options can be supplied for higher speed or lower heat requirements.
- Precision grades: commonly supplied in ISO P4 and P2 grades for CNC spindles, grinding spindles, and precision equipment.
- Cage types: phenolic resin cage is commonly used for high-speed spindle bearings. Polyamide and brass cage options are available for specific applications.
Inspection reports, matching data, and dimensional checks can be provided according to order requirements. See more details on our Quality Control page.
Typical Inspection Items
The following items are commonly checked for precision spindle bearings. Final inspection standards depend on bearing size, precision grade, and customer requirements.
Where 719 Series Bearings Are Commonly Used
719 series angular contact ball bearings are mainly used in spindle systems where radial space is limited, but speed, preload control, and running accuracy still need to be maintained.
CNC Machine Tool Spindles
Used in machining centers, milling spindles, and motorized spindles where the bearing arrangement must support high speed and stable axial preload.
- Machining centers
- High-speed milling spindles
- Motorized electro-spindles
Grinding Machine Spindles
Suitable for grinding spindles where low vibration, controlled heat, and consistent preload help maintain surface finish and dimensional accuracy.
- Cylindrical grinding machines
- Surface grinding spindles
- Tool grinding equipment
Precision and High-Speed Equipment
Also used in measuring instruments, test equipment, vacuum pumps, and other compact high-speed assemblies that require smooth 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 bearings in P4 or P2 grades, matched sets, selected preload classes, and lubrication options based on the spindle design.
719 Series or 70 Series: Which One Fits Your Spindle?
Both 719 and 70 series angular contact ball bearings are used in spindle applications. The main difference is the bearing cross-section. This affects radial space, bearing mass, rigidity, and the final spindle layout.
For Limited Radial Space
Choose the 719 series when the spindle design needs a smaller bearing cross-section and lower bearing mass, while still keeping speed and running accuracy under control.
- Smaller cross-section than the 70 series
- Useful when radial space is restricted
- Lower mass helps reduce heat at high speed
- Common in compact CNC and grinding spindles
For Standard Spindle Layouts
Choose the 70 series when the spindle has enough radial space and a standard light-series bearing section is acceptable for the required speed and rigidity.
- Standard light-series cross-section
- Suitable for common machine tool spindle designs
- Good option when radial space is not the main limit
- Often compared during spindle bearing selection
719 Series Dimensions & Specifications
Standard dimensions, load ratings, mounting sizes, and limiting speeds for 719 series angular contact ball bearings. Final values may vary depending on precision grade, cage type, preload, and lubrication method.
| 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 production, inspection, stock preparation, and export supply for 719 series angular contact ball bearings used by spindle manufacturers, distributors, and OEM customers.
Precision Production
Manufacturing support for high-speed spindle bearing requirements, including precision grades and configuration options.
Inspection and Matching
Inspection support for dimensional accuracy, running accuracy, preload control, and matched bearing sets.
Stock and Export Supply
Batch supply, protective packaging, and international delivery support for distributors and OEM projects.
Explore Related Bearing Pages
Discover other angular contact ball bearing series related to the 719 series, and navigate to the main angular contact ball bearings category for a broader view of TEDIN bearing options.
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 719 Series Angular Contact Ball Bearings?
Tell us your bearing model, precision grade, preload requirement, quantity, or application details. TEDIN can support standard bearings, matched pair bearing sets, hybrid ceramic options, and OEM supply.