71830 CDGA/P4
71800 Series Super Precision Angular Contact Ball Bearings
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71830 CDGA/P4 Bearing Product Overview & Core Advantages
The 71830 CDGA/P4 is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Manufactured to P4 tolerance class, this metric bearing features an open seal type and is preloaded to Extra Light (Class A), making it ideal for high-speed spindles and precision machinery. Its 15° contact angle is optimized to handle combined loads, efficiently supporting both radial and axial forces. The bearing is universally matchable (SU), allowing for precise axial play adjustment when mounted in pairs, ensuring optimal performance and high rigidity in demanding operational environments.
71830 CDGA/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71830 | Basic bearing designation, indicating a light series angular contact ball bearing with a 150mm bore. |
| C | Specifies a 15° contact angle, optimized for high-speed operation and moderate axial load capacity. |
| DG | Indicates the bearing is universally matchable (SU). Two bearings can be paired in a "back-to-back" (DB) or "face-to-face" (DF) arrangement to adjust preload and handle moment loads. |
| A | Denotes the light preload (Class A), which minimizes friction and heat generation, contributing to the high limiting speed. |
| /P4 | Specifies the tolerance class P4, representing very high precision with tight dimensional and running accuracy tolerances. |
71830 CDGA/P4 Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4 tolerance class with extremely tight dimensional tolerances on the bore, outside diameter, and width. This ensures minimal runout and vibration, providing superior rotational accuracy and system stability.
- Optimized for Combined Loads: The 15° contact angle enables the bearing to efficiently handle combined radial and axial loads. The universal matchable (SU) design allows for pairing to create a preloaded set, significantly increasing the overall system's rigidity and moment load capacity.
- Superior High-Speed Performance: The phenolic resin cage is lightweight and possesses excellent sliding properties, reducing centrifugal forces and friction. Combined with the light preload and optimized internal geometry, this allows for a high limiting speed of 11,000 rpm.
- Premium Material Construction: Rings and balls are made from high-grade chrome steel, ensuring high durability, wear resistance, and a long operational life under demanding conditions.
71830 CDGA/P4 Bearing Typical Application Areas
The 71830 CDGA/P4 is engineered for high-performance applications where precision, speed, and rigidity are critical. Key industries and machinery include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Aerospace & Defense: Gyroscopes, radar systems, and navigation equipment.
- Medical Equipment: High-speed dental handpieces and imaging scanner gantries.
- Test & Measurement Equipment: Coordinate measuring machines (CMM) and precision rotary tables.
