71916 ACD/P4ATBTA
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71916 ACD/P4ATBTA
Basic Information
System of measurement
Metric
Weight
1.11 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
80 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
110 mm
Outside diameter tolerance
-0.004mm to 0
Width
48 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
27
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
16672 lbf
Radial static load rating
24750 lbf
Limiting speed
17 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
Price:
$ 624.33
/ each
In Stock
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71916 ACD/P4ATBTA Bearing Product Overview & Core Advantages
The 71916 ACD/P4ATBTA is a super-precision angular contact ball bearing designed for the most demanding applications. As part of a matched triplex back-to-back (TBT) set, it delivers exceptional system rigidity and rotational accuracy. Its P4A tolerance class ensures ultra-precise running, making it ideal for machine tool spindles and other high-performance machinery where high rigidity and superior running accuracy under combined loads are paramount.
71916 ACD/P4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
The model number 71916 ACD/P4ATBTA is decoded as follows:
- 71916: The basic series, indicating a super-precision, light-weight angular contact ball bearing with an 80 mm bore, 110 mm outside diameter, and 48 mm width.
- ACD: Signifies a 25° contact angle and that the bearing is supplied as a universal triplex set.
- P4A: Denotes a tolerance class stricter than ABEC 7/P4, with enhanced running accuracy requirements.
- TB: Indicates the matched arrangement is Back-to-Back (TBT).
- TA: Specifies the preload grade as Extra light (Class A).
71916 ACD/P4ATBTA Bearing Structural Features & Performance Benefits
- Unmatched Rigidity and Stability: The triplex back-to-back (TBT) arrangement creates a highly rigid bearing system that can withstand heavy combined loads (radial and axial) and overturning moments, minimizing shaft deflection under operation.
- Super-Precision Performance: Manufactured to P4A tolerance class with extremely tight dimensional and running accuracy tolerances, this bearing ensures minimal vibration and high positional accuracy for the spindle.
- Optimized for High-Speed Operation: The lightweight phenolic resin cage reduces centrifugal forces, while the 25° contact angle provides an excellent balance between radial and axial load capacity, contributing to a high limiting speed of 17,000 rpm.
- High Load Capacity: With a dynamic load rating of 16,672 lbf and a static load rating of 24,750 lbf, the bearing is engineered for long service life under demanding load conditions.
71916 ACD/P4ATBTA Bearing Typical Application Areas
This precision bearing is specifically engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: Used in PCB drilling, semiconductor manufacturing, and other precision machining equipment.
- High-Frequency Motors: Spindles for applications requiring high rotational accuracy and speed.
