S71918 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S71918 CE/HCP4A
Basic Information
System of measurement
Metric
Weight
0.46 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
90 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
125 mm
Outside diameter tolerance
-0.009mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
24
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
6908 lbf
Radial static load rating
5400 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:
$ 1308.71
/ each
In Stock
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S71918 CE/HCP4A Bearing Product Overview & Core Advantages
The S71918 CE/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This sealed bearing features a 15° contact angle and is supplied with a preload, delivering superior running accuracy and high rigidity. Its compact design, combined with ceramic balls and a P4 (ABEC-7) tolerance class, makes it ideal for high-speed spindles and other precision machinery where reliability and minimal deflection are critical.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S | Stainless Steel Bearing Ring |
| 7 | Angular Contact Ball Bearing |
| 19 | Bore Diameter Series (Specific to manufacturer's internal coding) |
| 18 | Bore Diameter: 90 mm |
| CE | Contact Angle: 15° |
| HC | Hybrid Ceramic (Ceramic Balls, Steel Rings) |
| P4A | P4 (ABEC-7) Tolerance Class with specific internal clearance/geometry |
S71918 CE/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces friction, heat generation, and wear. This enables higher limiting speeds (17,000 rpm) and extended service life, especially in high-speed applications.
- Precision & Rigidity: Manufactured to a P4 tolerance class and supplied with a preload, this bearing provides exceptional running accuracy and system rigidity, minimizing deflection under load for superior machining or operational results.
- Optimized Cage Design: The phenolic resin cage is lightweight and offers excellent performance at high speeds, contributing to smooth operation and reduced vibration.
- Sealed & Lubricated for Life: The integral seals protect against contamination and retain the high-performance grease, making the bearing maintenance-free and suitable for the specified temperature range (-30°C to 110°C).
S71918 CE/HCP4A Bearing Typical Application Areas
The S71918 CE/HCP4A is engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy positioning systems.
- Medical Equipment: Dental handpieces, high-speed centrifuges.
- Aerospace & Defense: Gyroscopes, navigation systems, and auxiliary power units.
- High-Speed Motors and Pumps: Where reliability and low heat generation are paramount.
