71872 ACMB
Single Row Angular Contact Ball Bearings
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Part No.
Part No.
71872 ACMB
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
12 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
360 mm
Bore diameter tolerance
-0.03mm to 0
Outside diameter
440 mm
Outside diameter tolerance
-0.033mm to 0
Width
38 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
2.1 mm
Contact angle
25 °
Distance from side face to load point
112 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
386.4 mm
Outer Ring Dimensions
Shoulder diameter outer ring
414.5 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
52650 lbf
Radial static load rating
95625 lbf
Limiting speed
1.5 X 1000 rpm
Lubrication
Lubricated
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Brass
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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71872 ACMB Bearing Product Overview & Core Advantages
The 71872 ACMB is a metric single row angular contact ball bearing engineered for high-precision applications requiring exceptional dimensional stability and load capacity. This bearing is specifically designed to accommodate combined loads, handling significant radial loads and axial loads in one direction simultaneously. Manufactured to a P6 (ABEC-3) tolerance class, it ensures superior running accuracy and is ideal for machinery demanding high reliability and rotational precision. Its robust construction and optimized 25° contact angle provide excellent operational rigidity.
71872 ACMB Bearing Model Code Explained, Specifications & Naming Convention
The model number 71872 ACMB can be broken down as follows:
- 71872: The basic bearing designation, indicating the specific size series with a 360 mm bore and 440 mm outside diameter.
- A: Denotes a 25° contact angle, optimized for supporting high axial loads.
- C: Indicates the bearing has a brass cage (machined window-type), which offers high strength and is suitable for high-speed operation.
- MB: Signifies that the bearing comes pre-lubricated from the factory.
71872 ACMB Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The single row angular contact design, combined with a 25° contact angle and robust construction using chrome steel rings and balls, provides high rigidity. This enables the bearing to support substantial radial dynamic load ratings of 52,650 lbf and static load ratings of 95,625 lbf.
- Precision Performance: Manufactured to P6 tolerance, this bearing guarantees precise internal geometry and minimal runout, which is critical for applications requiring high rotational accuracy.
- Cage Design: The brass cage (C) ensures dimensional stability at elevated speeds and provides excellent guidance for the rolling elements, contributing to smooth operation and a long service life.
- Ready-to-Install: The bearing is supplied pre-lubricated (MB), simplifying installation and providing immediate protection upon startup.
71872 ACMB Bearing Typical Application Areas
The 71872 ACMB is ideally suited for heavy-duty, high-precision industrial equipment, including:
- Machine Tool Spindles
- Industrial Gearboxes
- Large Pumps and Compressors
- Precision Turntables and Indexing Tables
