7217 ACD/P4ADGC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7217 ACD/P4ADGC
Basic Information
System of measurement
Metric
Weight
3.71 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
85 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
150 mm
Outside diameter tolerance
-0.004mm to 0
Width
56 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
19.05 mm
Ball quantity
17
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
35100 lbf
Radial static load rating
38250 lbf
Limiting speed
17 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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7217 ACD/P4ADGC Bearing Product Overview & Core Advantages
The 7217 ACD/P4ADGC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a universal matchable (SU) bearing supplied in a pre-set pair, it delivers superior performance in handling combined loads, including significant radial and axial loads in both directions. Manufactured to the stringent P4A tolerance class, it offers extremely tight dimensional and running accuracy, making it ideal for high-precision, high-rigidity systems such as machine tool spindles. Its moderate preload (Class C) ensures optimal stiffness and minimal deflection under operational stresses.
7217 ACD/P4ADGC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance & Advantage |
|---|---|---|
| ACD | 25° Contact Angle, Universal Matchable Design | Optimized for combined loads. Bearings can be universally paired in any combination to achieve the required preload and stiffness. |
| P4A | High Precision Tolerance Class | Exceeds ABEC 7 standards, ensuring extremely low runout and vibration for superior performance in high-speed and high-precision applications. |
| DGC | Phenolic (Polyamide) Cage, Lubricated | The lightweight phenolic cage contributes to lower friction and higher limiting speeds. The bearing is pre-lubricated for immediate operation. |
7217 ACD/P4ADGC Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The double row design and 25° contact angle provide a robust structure capable of supporting high radial dynamic load ratings of 35,100 lbf and radial static load ratings of 38,250 lbf. This makes the bearing exceptionally resistant to deformation under combined loads.
- Precision and Speed Performance: The P4A tolerance class guarantees minimal operational error. Combined with the lightweight phenolic cage, the bearing achieves a high limiting speed of 17,000 rpm, suitable for high-speed spindle applications.
- Universal Matchability: As a Universal Matchable (SU) bearing, any two 7217 ACD/P4ADGC bearings can be mounted together in a back-to-back, face-to-face, or tandem arrangement without selective matching, simplifying installation and inventory management.
- Durable Material Construction: Manufactured from chrome steel for both rings and balls, the bearing offers high wear resistance and long service life under standard operating temperatures from -30°C to 110°C.
7217 ACD/P4ADGC Bearing Typical Application Areas
This precision angular contact ball bearing is engineered for high-performance machinery where accuracy, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes: Industrial robotics and automation systems.
- High-Frequency Motors and Spindles: Applications requiring minimal runout at high rotational speeds.
- Medical and Laboratory Equipment: Centrifuges and precision imaging devices.
- Aerospace Actuation Systems: Control surface mechanisms and auxiliary drives.
