Precision Angular Contact Ball Bearings for Spindles, Motors & OEM Applications
TEDIN manufactures precision angular contact ball bearings for machine tool spindles, high-speed motors, and other demanding industrial systems.
- Precision Grades: P5, P4, P2 available
- Runout Control: ≤ 0.002 mm
- Applications: Spindles, motors, precision equipment
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.
Cross-Section Size Comparison
Whether you are looking for high-precision bearings for machine tool spindles or heavy-duty solutions for industrial equipment, our structural designs deliver outstanding performance.
Precision Engineered for Every Application
We manufacture a comprehensive range of angular contact ball bearings, from ultra-light to heavy-duty series, designed to meet diverse radial space, speed, and rigidity requirements.
As illustrated in the cross-section comparison, our varying contact angles and internal geometries allow for optimal load distribution. Whether you need compact stiffness or robust capacity, Tedin provides the exact configuration to maximize your equipment's performance.
Explore our full product range below to find the perfect match for your specific technical demands. Get a Technical QuoteAngular Contact Ball Bearing Series
Explore high-precision angular contact bearing series for machine tool spindles, high-speed motors, matched sets, and heavy-duty industrial applications.
718 Series Angular Contact Ball Bearings
Ultra-light section for high-speed spindle applications.
View 718 Series
719 Series Angular Contact Ball Bearings
Lightweight design with excellent speed capability and rigidity.
View 719 Series
70 Series Angular Contact Ball Bearings
Balanced speed, load capacity, and rigidity for precision equipment.
View 70 Series
72 Series Angular Contact Ball Bearings
Higher load capacity for demanding industrial applications.
View 72 Series
Matched Angular Contact Ball Bearings
Precision matched sets for DB, DF, DT, and universal arrangements.
View Matched Sets
Double Row Angular Contact Ball Bearings
Compact structure for combined radial and axial load support.
View Double Row Bearings
QJ Series Four Point Contact Ball Bearings
Four-point contact design for axial loads in both directions.
View QJ SeriesComparison of Angular Contact Bearing Arrangements
Choosing the right angular contact ball bearing configuration (DB, DF, DT, or Universal) 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) | Universal Arrangement (U / Flush Ground) |
|---|---|---|---|---|
| Visual Symbol | < >(Lines of force diverge) | > <(Lines of force converge) | >> or <<(Lines of force parallel) | U(Can be mounted in any order) |
| Load Direction | Radial + Axial (Both directions) | Radial + Axial (Both directions) | Radial + Heavy Axial (One direction only) | Highly Flexible (Acts as DB, DF, or DT) |
| Moment Rigidity | High (Wide support base) | Low (Narrow support base) | Moderate (Requires opposing pairs) | Matches chosen configuration |
| Thermal Behavior | Accommodates hot shafts well | Susceptible to preload buildup | Distributes load equally across paired angular contact bearings | Matches chosen configuration |
| Applications | Precision machine tool spindles, heavy-duty milling | Gearboxes, applications prone to shaft misalignment | High-speed turbines, compressors requiring high axial capacity | Inventory optimization, random pairing without loss of preload |
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) |
Selection Guide
How to Select Angular Contact Ball Bearings
Choosing the right angular contact ball bearing depends on contact angle, bearing arrangement, precision grade, preload, and operating conditions. Use this guide to compare key options before requesting a quote.
Contact Angle
Contact angle affects axial load capacity, speed capability, and bearing rigidity.
- 15° for high-speed applications
- 25° for balanced speed and axial load
- 40° for higher axial load capacity
Bearing Arrangement
Angular contact ball bearings are often used in matched sets for better axial positioning and rigidity.
- DB for high rigidity and moment load
- DF for better alignment tolerance
- DT for higher one-direction axial load
Precision Grade
Precision grade influences running accuracy, vibration, speed stability, and spindle performance.
- P5 for precision industrial machinery
- P4 for machine tool spindle applications
- P2 for ultra-precision bearing systems
Preload & Matching
Proper preload helps control stiffness, vibration, temperature rise, and axial positioning accuracy.
- Light preload for higher speed
- Medium preload for balanced rigidity
- Matched sets available for custom needs
Not sure which arrangement or preload is suitable?
Send us your model number, drawing, speed, load direction, or application details. TEDIN can help recommend suitable angular contact ball bearings and matched sets.
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 high-precision angular contact ball bearings.
What is the difference between angular contact ball bearings and deep groove ball bearings?
How do I choose 15°, 25°, or 40° contact angles?
What is the difference between DB, DF, and DT bearing arrangements?
How do I choose the correct preload for angular contact spindle bearings?
Which precision grade should I choose: P5, P4, or P2?
Which lubrication method is best for ultra-high-speed angular contact bearings?
Can TEDIN supply matched angular contact bearing sets or custom designs?
Technical Inquiry
Need Help Selecting Angular Contact Ball Bearings?
Send us your bearing model, drawing, operating speed, load direction, preload requirement, or application conditions. Our team can help you confirm the suitable bearing series, arrangement, precision grade, and custom options.