311S-HYB#1
High-Performance Custom Hybrid Ceramic Bearings (#1 Series)
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Part No.
Part No.
311S-HYB#1
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Tolerance class
ABEC 1 | ISO P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.015mm to 0
Outside diameter
120 mm
Outside diameter tolerance
-0.015mm to 0
Width
29 mm
Width tolerance
-0.15mm to 0
Performance
Temperature range
-30°to 120 °C
Lubrication
None
Radial internal clearance
CN
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Chrome Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 170.74
/ each
In Stock
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311S-HYB#1 Bearing Product Overview & Core Advantages
The 311S-HYB#1 is a premium single row deep groove ball bearing engineered for exceptional performance in demanding applications. Its defining characteristic is the use of ceramic balls (silicon nitride) paired with chrome steel rings, creating a hybrid bearing solution. This configuration delivers superior high-speed capability, reduced operating temperature, and extended service life compared to all-steel counterparts. With an open design and ABEC 1 / ISO P0 precision, it offers reliable radial load capacity and is ideal for applications requiring high reliability and efficiency.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 311S | Standard bearing series designation, indicating specific dimensions (55mm bore, 120mm OD, 29mm width). |
| HYB | Signifies a Hybrid construction, featuring ceramic (silicon nitride) balls and steel rings. |
| #1 | Internal product variant or generation identifier. |
311S-HYB#1 Bearing Structural Features & Performance Benefits
- Hybrid Ceramic-Steel Construction: The combination of silicon nitride balls and chrome steel rings results in lower density, reduced centrifugal forces, and higher limiting speeds. It also provides inherent electrical insulation and superior corrosion resistance.
- Precision Ground Components: Manufactured to ABEC 1 / ISO P0 tolerance standards, ensuring consistent running accuracy and smooth operation, which is critical for reducing vibration and noise.
- Optimized Internal Clearance: The standard CN radial internal clearance is suitable for a wide range of operating conditions, providing a balance between fit and thermal expansion.
- High-Temperature Suitability: The specified temperature range of -30°C to 120°C, combined with the thermal stability of ceramic balls, makes it suitable for applications with elevated operating temperatures.
- Open Design for Custom Lubrication: The open seal type allows for the application of specialized lubricants tailored to specific operational needs, such as high-speed greases or oil mist systems.
311S-HYB#1 Bearing Typical Application Areas
This high-speed hybrid bearing is ideally suited for applications where performance and longevity are paramount. Key sectors include:
- Electric Motors & Spindles: Especially in high-frequency motors and CNC spindle drives where speed and precision are critical.
- Aerospace & Aviation: Auxiliary systems and instrumentation requiring reliable, long-life components.
- Medical Equipment: High-speed dental handpieces and laboratory centrifuges.
- Vacuum Pumps & Compressors: Applications benefiting from the low outgassing and thermal stability of ceramic components.
- Robotics and Precision Machinery: Joints and drives requiring high stiffness and minimal maintenance.
