7015 ACE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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7015 ACE/HCP4ADGA Bearing Product Overview & Core Advantages
The 7015 ACE/HCP4ADGA is a precision angular contact ball bearing designed for applications demanding extreme accuracy and high performance. Engineered to a P4A tolerance class, it is a universally matchable (SU) bearing supplied in a pre-set pair, enabling it to accommodate combined loads—significant radial and axial loads in one direction. Its core advantages include exceptional running accuracy from its super-precision grade, high-speed capability facilitated by a lightweight phenolic cage and ceramic balls, and reliable operation within a wide temperature range. This bearing is ideal for high-rigidity, high-reliability spindles and precision machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7015 | Basic bearing series and size designation (Bore Diameter: 75 mm, Outside Diameter: 115 mm, Width: 40 mm). |
| ACE | Designates a 25° contact angle and specific internal design optimized for high-speed operation. |
| HC | Indicates the use of Hybrid Ceramic balls (Silicon Nitride), which reduce centrifugal forces, lower operating temperatures, and enable higher limiting speeds. |
| P4A | Denotes a super-precision tolerance class, with enhanced dimensional and running accuracy over ABEC 7/ISO P4 standards. |
| DG | Signifies a Universal Matchable (SU) bearing pair with an Extra Light (A) preload. This arrangement provides high system rigidity and is ready for installation as a duplex set. |
| A | Specifies the Extra Light preload level, minimizing friction and heat generation for optimal high-speed performance. |
7015 ACE/HCP4ADGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces weight and inertial forces within the bearing. This results in lower operating temperatures, reduced wear, and a substantially higher limiting speed (31,000 rpm) compared to all-steel equivalents.
Phenolic Cage: The lightweight and robust phenolic resin cage is ideal for high-speed applications, offering excellent dimensional stability and low friction at high rotational velocities.
Precision & Rigidity: Manufactured to P4A tolerance class and supplied as a pre-loaded Universal Match (SU) pair, this bearing arrangement delivers exceptional running accuracy and high system rigidity, effectively managing combined loads.
High Load Capacity: With a dynamic load rating of 9068 lbf and a static load rating of 9338 lbf, the bearing is engineered for demanding applications requiring long service life under significant stress.
7015 ACE/HCP4ADGA Bearing Typical Application Areas
The 7015 ACE/HCP4ADGA is specifically engineered for high-performance machinery where speed, precision, and rigidity are paramount. Its primary applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing spindles.
- High-Frequency Motors: Spindles for CNC routers and engraving machines.
- Aerospace & Defense Systems: Gyroscopes, radar equipment, and other precision instruments.
