7018 CE/P4ATBTA
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7018 CE/P4ATBTA
Basic Information
System of measurement
Metric
Weight
3.61 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
90 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
140 mm
Outside diameter tolerance
-0.004mm to 0
Width
72 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
28
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
17550 lbf
Radial static load rating
21712 lbf
Limiting speed
15 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Triplex Back-to-Back (TBT)
Number of bearings in matched set
3
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
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
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7018 CE/P4ATBTA Bearing Product Overview & Core Advantages
The 7018 CE/P4ATBTA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This triplex back-to-back (TBT) matched set delivers superior performance under combined loads, handling significant radial and axial forces simultaneously. Manufactured to P4A tolerance class with an extra light preload (Class A), it ensures minimal runout and vibration, making it ideal for high-speed, high-rigidity spindles and precision machinery where positional accuracy is critical.
7018 CE/P4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7018 CE/P4ATBTA breaks down as follows:
- 7018: Basic series designation (90mm bore, 140mm OD)
- C: 15° contact angle
- E: Optimized internal design for high performance
- P4A: High precision tolerance class (exceeding ABEC 7)
- TBT: Triplex Back-to-Back matched arrangement
- A: Extra light preload (Class A)
7018 CE/P4ATBTA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The triplex back-to-back configuration creates an extremely rigid bearing system capable of withstanding heavy combined loads and moments. This arrangement provides exceptional stability for machine tool spindles.
- Precision Performance: Manufactured to P4A tolerance class with precisely controlled bearing dimensions, ensuring minimal vibration and superior running accuracy for high-speed applications.
- Optimized Internal Design: Features a 15° contact angle balanced for both radial and axial load capacity. The phenolic cage provides excellent high-speed capability with reduced friction.
- Premium Materials: Constructed from chrome steel for both rings and balls, delivering high durability and long service life under demanding operating conditions.
7018 CE/P4ATBTA Bearing Typical Application Areas
This precision bearing set is specifically engineered for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers
- Precision Rotary Tables: Indexing and positioning systems
- High-Speed Machining Centers: Where extreme rigidity and accuracy are required
- Industrial Robotics: Precision joint and arm applications
- Aerospace Manufacturing Equipment: Critical machining and positioning systems
