S71909 CE/HCP4AQBCA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S71909 CE/HCP4AQBCA
Basic Information
System of measurement
Metric
Weight
0.46 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
45 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
68 mm
Outside diameter tolerance
-0.004mm to 0
Width
48 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
6075 lbf
Radial static load rating
6188 lbf
Limiting speed
46 X 1000 rpm
Lubrication
Grease
Matched arrangement
Quadruplex Back-to-Back (QBC)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 470.32
/ each
In Stock
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S71909 CE/HCP4AQBCA Bearing Product Overview & Core Advantages
The S71909 CE/HCP4AQBCA is a high-precision quadruplex matched bearing set designed for demanding applications requiring exceptional rigidity and accuracy. This metric angular contact ball bearing configuration features four bearings arranged in a back-to-back (QBC) duplex, enabling it to handle significant combined loads (radial and axial) from both directions simultaneously. Manufactured to ABEC 7 / P4A tolerance class with ceramic balls and phenolic cage, it delivers superior high-speed performance, thermal stability, and long-term operational reliability in compact, high-stiffness mounting arrangements.
S71909 CE/HCP4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
The model number S71909 CE/HCP4AQBCA is decoded as follows:
- S7: High-precision bearing series
- 1909: Dimension series; 09 for 45mm bore, 19 for specific cross-section
- CE: Hybrid Ceramic (Silicon Nitride) balls and Phenolic Resin cage
- HC: Hybrid Ceramic (balls)
- P4A: ABEC 7 / ISO P4A super precision tolerance class
- QBC: Quadruplex set, Back-to-Back arrangement
S71909 CE/HCP4AQBCA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The quadruplex back-to-back (QBC) arrangement creates a highly rigid bearing system that effectively resists moment loads and supports heavy combined radial and axial loads.
- Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a phenolic resin cage enables a high limiting speed of 46,000 rpm, with excellent acceleration and deceleration characteristics.
- Precision & Stability: Manufactured to P4A tolerance class with a 15° contact angle, this set ensures minimal runout and consistent performance under high-speed rotation and thermal variations.
- Long-Term Reliability: The sealed design and factory-applied grease lubrication protect against contamination and provide maintenance-free operation within the specified temperature range (-30°C to 110°C).
S71909 CE/HCP4AQBCA Bearing Typical Application Areas
This precision bearing set is ideally suited for:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Machining Centers
- Aerospace & Defense Actuators
- Medical Device Rotary Systems
- Semiconductor Manufacturing Equipment
