71984 AM
Single Row Angular Contact Ball Bearings
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Part No.
Part No.
71984 AM
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
42 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
420 mm
Bore diameter tolerance
-0.035mm to 0
Outside diameter
560 mm
Outside diameter tolerance
-0.038mm to 0
Width
65 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
4 mm
Distance from side face to load point
174 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
467.2 mm
Outer Ring Dimensions
Shoulder diameter outer ring
515.35 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
92250 lbf
Radial static load rating
172125 lbf
Limiting speed
1.2 X 1000 rpm
Lubrication
Lubricated
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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71984 AM Bearing Product Overview & Core Advantages
The 71984 AM is a single row angular contact ball bearing designed for exceptional precision and reliability in demanding applications. This metric bearing features an open design and is manufactured to a P6 (ABEC-3) tolerance class, ensuring high running accuracy. Its primary advantage lies in its ability to accommodate combined loads, efficiently supporting both radial and substantial axial loads in one direction. The optimized internal geometry and high-grade chrome steel construction contribute to its high rigidity and long service life, making it an ideal choice for high-performance machinery.
71984 AM Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71984 | Basic bearing designation, indicating the specific bearing dimensions (420mm bore, 560mm OD, 65mm width). |
| A | Signifies a 30° contact angle, optimized for carrying higher axial loads. |
| M | Indicates the bearing is made from brass machined window-type cage, providing excellent strength and guidance for high-speed operation. |
71984 AM Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The single row angular contact design, with a defined 30° contact angle and robust construction, provides high rigidity and enables the bearing to handle significant combined radial and axial loads.
- Precision Performance: Manufactured to a P6 tolerance class, this bearing ensures precise shaft guidance and low runout, which is critical for applications requiring high rotational accuracy.
- Optimized for Speed: The use of a brass machined cage (M) ensures stability and reduces friction, contributing to reliable performance at the specified limiting speed.
- Durability and Compliance: Constructed from high-carbon chrome steel for both rings and balls, offering high fatigue resistance. The bearing is pre-lubricated and is compliant with ROHS and REACH regulations.
71984 AM Bearing Typical Application Areas
This precision bearing is engineered for heavy-duty and high-precision applications, including:
- Machine Tool Spindles
- Industrial Gearboxes
- Large Pumps and Compressors
- Precision Turntables and Indexing Tables
