71988 ACMB
Single Row Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71988 ACMB Bearing Product Overview & Core Advantages
The 71988 ACMB is a single row angular contact ball bearing engineered for high-precision applications requiring superior performance under combined loads. Its design is optimized to accommodate significant radial loads and unidirectional axial loads simultaneously, making it an ideal choice for demanding industrial environments. Manufactured to a P6 (ABEC-3) tolerance class, this bearing ensures exceptional running accuracy and operational reliability. The 25° contact angle provides excellent axial load capacity and high rigidity, while the brass cage contributes to stable operation at the specified limiting speed. Pre-lubricated for immediate use, it offers a broad operating temperature range from -30°C to 110°C.
Model Code Deep Explanation
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 71988 | Basic bearing designation | Defines the standard bearing dimensions (440mm bore, 600mm OD, 74mm width) |
| AC | Angular Contact design | Optimized for combined radial and axial loads with a 25° contact angle |
| MB | Brass Machined Cage | Provides excellent guidance and stability at high speeds |
71988 ACMB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The single row angular contact design with a 25° contact angle delivers exceptional stiffness and can support substantial combined loads. With a radial dynamic load rating of 114,075 lbf and radial static load rating of 234,000 lbf, this bearing is built for heavy-duty applications.
Precision Engineering: Manufactured to P6 (ABEC-3) tolerance class with precise dimensional control, ensuring minimal runout and vibration for high-precision applications. The optimized shoulder diameters (494mm inner ring, 549.9mm outer ring) provide secure seating and proper load distribution.
High-Speed Capability: The brass machined cage (MB) enables stable operation at the specified limiting speed of 1,100 rpm. The 4mm chamfer dimension facilitates proper installation and alignment.
Premium Material Construction: Manufactured from chrome steel for both rings and balls, providing excellent wear resistance and durability. The bearing comes pre-lubricated for immediate operation within the specified temperature range.
71988 ACMB Bearing Typical Application Areas
The 71988 ACMB angular contact ball bearing is specifically designed for heavy-duty industrial applications requiring high precision and reliability:
- Large machine tool spindles and precision machining centers
- Industrial gearboxes and power transmission systems
- Heavy-duty pumps and compressor systems
- Large industrial motors and generator sets
- Mining equipment and material handling systems
- Paper processing machinery and rolling mill equipment
