S7026 ACD/P4ADGD
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7026 ACD/P4ADGD
Basic Information
System of measurement
Metric
Weight
6.51 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
130 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
200 mm
Outside diameter tolerance
-0.004mm to 0
Width
66 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
22.225 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
51525 lbf
Radial static load rating
67500 lbf
Limiting speed
11 X 1000 rpm
Lubrication
Grease
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Heavy / Class D
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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S7026 ACD/P4ADGD Bearing Product Overview & Core Advantages
The S7026 ACD/P4ADGD is a precision double row angular contact ball bearing engineered for applications demanding exceptional rigidity and accuracy. This sealed bearing is designed to accommodate combined loads (radial and bidirectional axial loads) simultaneously, making it ideal for high-precision, high-reliability machinery. Manufactured to the stringent P4A tolerance class and featuring a heavy preload (Class D), it delivers superior rotational accuracy and stability. Its universal matchable (SU) design allows for flexible mounting arrangements in pairs, providing outstanding operational performance in demanding conditions.
S7026 ACD/P4ADGD Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact, Double Row design. This indicates the bearing's fundamental structure for handling combined loads. |
| P4A | High precision tolerance class, exceeding ABEC 7 standards, ensuring minimal runout and vibration for ultra-precise applications. |
| D (in P4ADGD) | Signifies a Heavy Preload (Class D). This pre-set internal clearance provides maximum rigidity and minimizes axial/radial deflection under load. |
| GD | Indicates the bearing is sealed and pre-lubricated with grease. This offers protection from contamination and provides long-term, maintenance-free operation. |
S7026 ACD/P4ADGD Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row angular contact design, combined with a 25° contact angle and heavy preload, provides exceptional stiffness. This enables the bearing to support significant radial dynamic load ratings of 51,525 lbf and static load ratings of 67,500 lbf, effectively managing complex combined loads.
- Precision & High-Speed Performance: Built to P4A tolerance class with a lightweight, robust phenolic cage, the bearing ensures smooth operation and stable high-speed performance, with a limiting speed of 11,000 rpm.
- Durability & Long Service Life: Components made from chrome steel for both rings and balls offer high wear resistance and durability. The sealed construction with pre-applied grease lubrication protects against contaminants and ensures reliable performance across a wide temperature range of -30°C to 110°C.
- Optimized Design: With 21 high-precision balls of 22.225 mm diameter, the bearing achieves an optimal balance between load distribution and smooth rolling motion.
S7026 ACD/P4ADGD Bearing Typical Application Areas
This bearing is ideally suited for high-precision, high-rigidity applications, including:
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Robotic Arm Joints and Rotary Units
