S71916 ACE/HCP4ATBTB
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S71916 ACE/HCP4ATBTB
Basic Information
System of measurement
Metric
Weight
0.93 kg
Tolerance class
P4A
Seal type
Sealed
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
24
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
10530 lbf
Radial static load rating
11475 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Grease
Matched arrangement
Triplex Back-to-Back (TBT)
Number of bearings in matched set
3
Universal matching bearing
No (Standard)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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S71916 ACE/HCP4ATBTB Bearing Product Overview & Core Advantages
The S71916 ACE/HCP4ATBTB is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and speed performance. As part of a triplex back-to-back (TBT) matched set, this bearing is engineered to handle significant combined loads (radial and axial) simultaneously. Its construction with ceramic balls and a P4A super-precision tolerance class ensures high rotational accuracy and reliability, making it ideal for high-speed spindles and other precision machinery.
S71916 ACE/HCP4ATBTB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACE | 25° contact angle, standard internal clearance |
| HC | Hybrid Ceramic (Silicon Nitride balls) |
| P4A | Super precision tolerance class (equivalent to ABEC 7) |
| TBT | Triplex Back-to-Back matched bearing set |
S71916 ACE/HCP4ATBTB Bearing Structural Features & Performance Benefits
- Exceptional Rigidity & Load Capacity: The triplex back-to-back arrangement of three bearings creates an extremely rigid support system, capable of withstanding high combined radial and axial loads. The 25° contact angle is optimized for axial load carrying capacity.
- High-Speed Performance: The hybrid ceramic design with silicon nitride balls reduces centrifugal forces, lowers operating temperature, and enables a high limiting speed of 28,000 rpm. The lightweight phenolic cage further enhances high-speed stability.
- Precision & Longevity: Manufactured to P4A super-precision tolerances, this bearing ensures minimal runout and vibration for superior accuracy. The sealed design with pre-applied grease lubrication protects against contamination and provides long-term, maintenance-free operation within a temperature range of -30°C to 110°C.
S71916 ACE/HCP4ATBTB Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications such as:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Robotics and Automation Equipment
- High-Frequency Machining Centers
- Medical Device Spindles
- Aerospace Test Equipment
