High-Precision Angular Contact Ball Bearings
- Precision Class: P5, P4, P2 (ABEC-5, ABEC-7, ABEC-9)
- Rotational Runout: ≤ 0.002mm
- Main Application: Machine Tool Spindles, High-speed Motors
Product Introduction
Tedin is a direct manufacturer of high-precision angular contact ball bearings, specifically engineered for precision machine tool spindles and high-speed CNC equipment. Designed to accommodate simultaneous radial and axial loads, our bearings ensure high rigidity and stable high-speed rotation for industrial applications.
Product Series & Configurations
Whether you are looking for high-precision bearings for machine tool spindles or heavy-duty solutions for rolling mill equipment, our complete range of cylindrical roller bearings delivers outstanding performance. Click the tabs below to explore the structural features of each series.
Available Series
We manufacture a complete range of light and ultra-light series to meet different radial space and speed requirements:
-
718 Series
Ultra-thin section, designed for compact spaces requiring high stiffness. -
719 Series
Excellent for extremely high-speed operations with limited radial space. -
70 Series
Standard high-speed spindle applications. -
72 Series
Designed for applications requiring higher load capacity and greater rigidity where radial space is less constrained.
Paired Configurations
To maximize rigidity and load capacity, we supply factory-matched bearing sets based on your spindle design:
DB Arrangement
(Back-to-Back)
Highest rigidity; handles large tilting moment loads. Ideal for applications where the shaft operates at a higher temperature than the housing.
DF Arrangement
(Face-to-Face)
Less rigid but better at accommodating shaft misalignment. Best used when the housing is hotter than the shaft.
DT Arrangement
(Tandem)
Cannot handle reversing axial loads, but excels at handling extremely large, one-directional thrust loads by distributing the weight.
Universal
Arrangement
Single bearings precisely ground so they can be arranged in any combination (DB, DF, or DT) directly on-site.
Comparison of Angular Contact Bearing Arrangements
Choosing the right angular contact ball bearing configuration (DB, DF, or DT) is essential for managing radial and axial loads, maximizing spindle rigidity, and ensuring long-term precision in industrial applications.
| Characteristics | DB Arrangement (Back-to-Back) | DF Arrangement (Face-to-Face) | DT Arrangement (Tandem) |
|---|---|---|---|
| Visual Symbol | < > (Lines of force diverge) | > < (Lines of force converge) | >> or << (Lines of force parallel) |
| Load Direction | Radial + Axial (Both directions) | Radial + Axial (Both directions) | Radial + Heavy Axial (One direction only) |
| Moment Rigidity | High (Wide support base) | Low (Narrow support base) | Moderate (Requires opposing pairs) |
| Thermal Behavior | Accommodates hot shafts well | Susceptible to preload buildup | Distributes load equally across paired angular contact bearings |
| Applications | Precision machine tool spindles, heavy-duty milling | Gearboxes, applications prone to shaft misalignment | High-speed turbines, compressors requiring high axial capacity |
Materials & Cage Options
Bearing Rings & Rolling Elements
Standard Steel
High-purity GCr15 and GCr15SiMn bearing steel for excellent fatigue life and wear resistance.
Hybrid Ceramic Option
Integrated with Silicon Nitride (Si3N4) ceramic balls. Reduces centrifugal force and friction, enabling ultra-high speeds and lower operating temperatures.
Cage Options
Machined Brass Cages
High strength and temperature resistance, ideal for heavy-duty applications and ensuring long-term stability.
Phenolic Resin (Bakelite) Cages
Lightweight, low friction, and vibration-absorbing.
Specifically designed for ultra-high-speed spindle operations.
| Contact Angle | |
| C | 15° contact angle (High speed, radial loads) |
| AC | 25° contact angle (Balanced speed and axial load) |
| B | 40° contact angle (High axial load capacity) |
| Cage Material | |
| M | Machined brass cage (High strength, heavy duty) |
| TYN / P | Polyamide resin cage (Low friction, standard speed) |
| TR / T | Phenolic resin / Bakelite cage (Ultra-high speed) |
| Pairing & Arrangement | |
| DB | Back-to-back arrangement < > (High rigidity, wide support base) |
| DF | Face-to-face arrangement > < (Accommodates shaft misalignment) |
| DT | Tandem arrangement >> (High unidirectional axial load) |
| SU / DU | Universal matching (Single / Duplex arrangement) |
| Precision Class | |
| P5 | ISO Class 5 (Higher than standard precision) |
| P4 | ISO Class 4 (High precision for machine tools) |
| P2 | ISO Class 2 (Ultra-high precision) |
Factory Customization & Quality Control
As a source factory, Tedin provides flexible manufacturing services to meet specific engineering requirements. We support OEM and custom orders, including:
Custom Dimensions
Non-standard sizes available based on your specific technical drawings and space requirements.
Contact Angles
Standard 15°, 25°, and 40° options, or customized angles for specialized load distributions.
Preload Options
Light, medium, or heavy preloads precisely adjusted to match your spindle rigidity specifications.
100% Quality Control
Every bearing undergoes strict inspection for dimensional accuracy and runout before delivery.
Frequently Asked Questions
Technical insights and selection guides for our high-precision angular contact ball bearings.
What is the main difference between angular contact and deep groove ball bearings?
How do I choose the correct preload (Light, Medium, Heavy) for my spindle bearing?
• Light Preload (A): Ideal for ultra-high-speed operations (e.g., grinding spindles) where minimizing heat generation is critical.
• Medium/Heavy Preload (B/C): Recommended for heavy-duty milling or turning applications that require maximum stiffness to resist cutting forces.
Which lubrication method is best for ultra-high-speed angular contact bearings?
How can I determine the correct mounting direction for a single angular contact bearing?
Need Help Selecting the Right Angular Contact Bearing?
From preload configurations to cage materials, our technical engineers are ready to provide custom solutions for your high-speed spindles.