S71911 ACDTP/HCP4B
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71911 ACDTP/HCP4B
Basic Information
System of measurement
Metric
Weight
0.16 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
80 mm
Outside diameter tolerance
-0.007mm to 0
Width
13 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
23
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
4095 lbf
Radial static load rating
3082 lbf
Limiting speed
17 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 575.05
/ each
In Stock
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S71911 ACDTP/HCP4B Bearing Product Overview & Core Advantages
The S71911 ACDTP/HCP4B is a high-precision, single-row angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. Its primary advantage lies in its ability to accommodate combined loads—simultaneously handling significant radial loads and axial loads in one direction. This is achieved through its optimized 25° contact angle. The bearing is preloaded and manufactured to a P4 (ABEC-7) tolerance class, ensuring high running accuracy, rigidity, and minimal rotational runout. Its compact design, featuring a 55 mm bore and 13 mm width, makes it ideal for space-constrained, high-reliability assemblies.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S | Stainless Steel (corrosion-resistant) bearing ring material. |
| 7 | Angular Contact Ball Bearing. |
| 1911 | Standardized dimension series code (19: width series, 11: bore code for 55mm). |
| AC | 25° Contact Angle. |
| DTP | Contact seal on both sides for superior protection against contamination. |
| HC | Hybrid Ceramic: Ceramic balls with steel rings. |
| P4 | High-Precision Tolerance Class (ABEC-7). |
S71911 ACDTP/HCP4B Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of ceramic balls and steel rings significantly reduces friction, heat generation, and wear. This construction enables higher limiting speeds (17,000 rpm), provides electrical insulation, and extends service life, especially in high-speed or marginally lubricated conditions.
- Phenolic Resin Cage: The lightweight and robust phenolic cage offers excellent dimensional stability and low friction at high speeds, contributing to smooth operation and reduced vibration.
- Preload & High Rigidity: The bearing is supplied with a preload, which eliminates internal clearance. This results in enhanced stiffness and precise shaft positioning, critical for applications demanding high rotational accuracy.
- Sealed & Lubricated for Life: The integral contact seals (DTP) effectively shield the bearing from contaminants like dust and moisture while retaining the factory-applied lubricant. This design offers a maintenance-free, long-service-life solution.
- High Load Capacity: With a dynamic load rating of 4095 lbf and a static load rating of 3082 lbf, this bearing is capable of handling substantial combined loads reliably.
S71911 ACDTP/HCP4B Bearing Typical Application Areas
This high-performance angular contact ball bearing is ideally suited for:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors and Spindles
- Medical and Dental Equipment (e.g., high-speed handpieces)
- Aerospace Instrumentation and Actuators
- Robotic Arm Joints and Precision Gearboxes
