7036 ACD/P4ADBA
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7036 ACD/P4ADBA Bearing Product Overview & Core Advantages
The 7036 ACD/P4ADBA is a precision duplex pair of angular contact ball bearings designed for the most demanding applications. This back-to-back (DB) matched arrangement is preloaded to Extra light (Class A) specifications, delivering exceptional rotational accuracy and system rigidity. Its primary advantage lies in its ability to handle combined loads—significant radial and thrust loads from both directions—simultaneously, making it an ideal solution for high-precision, high-stability machinery requiring superior running accuracy.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7036 | Basic bearing series and size designation (180mm bore, 280mm OD). |
| AC | Angular Contact design with a 25° contact angle. |
| D | Duplex pair (two bearings supplied as a matched set). |
| P4A | Indicates a high precision tolerance class, exceeding normal P4 standards for enhanced running accuracy. |
| DB | Back-to-Back mounting arrangement. This configuration provides high moment rigidity. |
| A | Specifies the Extra light preload grade applied to the matched set. |
7036 ACD/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement creates a wide, stable support system that significantly increases moment load capacity and overall system rigidity. With a radial dynamic load rating of 83,475 lbf and a static load rating of 123,750 lbf, this bearing pair is engineered for heavy-duty performance under combined loads.
Precision & Speed Performance: Manufactured to a P4A tolerance class, this bearing ensures minimal runout and vibration. The phenolic cage is lightweight and robust, contributing to smooth operation at high speeds, with a limiting speed of 16,250 rpm. The 25° contact angle is optimized for handling substantial axial loads.
Material & Construction: Both rings and balls are made from high-grade chrome steel, ensuring high durability and fatigue resistance. The open seal type allows for optimal lubrication management in controlled environments, supporting operation within a temperature range of -30°C to 110°C.
7036 ACD/P4ADBA Bearing Typical Application Areas
The 7036 ACD/P4ADBA is specified for high-precision machinery where extreme accuracy and rigidity are non-negotiable. Its primary applications include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Gearboxes: Especially in industrial robotics and automation systems.
- High-Frequency Motors and Spindles: Where low vibration and high running accuracy are critical.
- Aerospace Test Rigs and Positioning Systems: Demanding the highest levels of precision and reliability.
