7017 ACD/PA9AQBCD
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7017 ACD/PA9AQBCD
Basic Information
System of measurement
Metric
Weight
3.58 kg
Tolerance class
PA9A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
85 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
130 mm
Outside diameter tolerance
-0.004mm to 0
Width
88 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
14.288 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
37800 lbf
Radial static load rating
55125 lbf
Limiting speed
17 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Quadruplex Back-to-Back (QBC)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
Preload
Heavy / Class D
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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7017 ACD/PA9AQBCD Bearing Product Overview & Core Advantages
The 7017 ACD/PA9AQBCD is a precision quadruplex angular contact ball bearing designed for applications requiring exceptional rigidity and load capacity. This matched set arrangement of four bearings in a back-to-back (QBC) configuration enables it to withstand complex combined loads, including significant radial and axial forces. Manufactured to an ultra-precise PA9A tolerance class and featuring a heavy preload (Class D), it delivers superior rotational accuracy and stability, making it ideal for high-performance machinery where high rigidity and precision are paramount.
7017 ACD/PA9AQBCD Bearing Model Code Explained, Specifications & Naming Convention
The model number 7017 ACD/PA9AQBCD is decoded as follows:
- 7017: Basic bearing series, with 85 mm bore and 130 mm outside diameter.
- A: Signifies a 25° contact angle, optimized for carrying high axial loads.
- C: Indicates the bearing is supplied with a heavy preload (Class D).
- D: Denotes a duplex (two-bearing) set as the base unit for matching.
- /PA9A: Specifies the ultra-high precision tolerance class for exceptional running accuracy.
- QBC: Defines the final arrangement as a Quadruplex Back-to-Back matched set of four bearings.
- D: Confirms the set is pre-adjusted for axial internal clearance (preload).
7017 ACD/PA9AQBCD Bearing Structural Features & Performance Benefits
- Unmatched Rigidity & Load Capacity: The quadruplex back-to-back (QBC) arrangement creates an extremely rigid bearing system capable of supporting very high combined radial and axial loads. The 25° contact angle and heavy preload further enhance this stability, minimizing shaft deflection under load.
- Precision Performance: Built to the stringent PA9A tolerance class, this bearing ensures minimal runout and vibration, which is critical for maintaining precision in demanding applications.
- Optimized Cage & Speed: The phenolic resin cage is lightweight and robust, contributing to smooth operation at the specified limiting speed and offering good performance in lubricated conditions.
- High-Quality Materials: Both rings and balls are manufactured from chrome steel, providing high hardness, wear resistance, and a long operational lifespan under heavy loads.
7017 ACD/PA9AQBCD Bearing Typical Application Areas
This high-precision, high-rigidity bearing set is engineered for the most demanding industrial sectors, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring extreme accuracy and rigidity.
- High-Precision Gearboxes and Pumps where shaft stability under complex loads is critical.
- Industrial Robotics: Critical joints and actuators that demand high moment load capacity and precise positioning.
- Aerospace & Defense Systems: Applications involving gyroscopes, radar systems, and other high-performance mechanisms.
