Japan Brand Long Life 7215 7216 7217 AC ACM Angular Contact Ball Bearing
Bore Size: 75 mm
- Samples: Japan Brand Long Life 7215 7216 7217 AC ACM Angular Contact Ball Bearing
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75 mm , 130 mm , 7215 AC
$7.14/Piece | 1 Piece (Min. Order) |
Lead Time–If you finish the payment today, your order will ship out within the delivery date.
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Quantity(Pieces) 1 – 2000 >2000 Est. Time(days) 3 To be negotiated
- Customization:
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Customized logo(Min. Order: 1000 Pieces)Customized packaging(Min. Order: 1000 Pieces)
Japan Brand Long Life 7215 7216 7217 AC ACM Angular Contact Ball Bearing
Angular contact ball bearings are particularly suitable for carrying combined (axial and radial) loads. Sometimes, they also can carry pure axial load and operate in higher speed. Under radial load, axial component force will be produced which must be counteracted. So the bearings are normally adjust against a second bearing.
Single row angular contact ball bearings can carry axial load acting in one direction only. In many applications, angular contact ball bearings in pairs or muti-arrangement should be used. The axial load carrying capacity of angular contact ball bearings increases with the increase of contact angle.
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Dimension(mm)
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Bearing Model
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Weight (kg)
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d
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D
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T
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75
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130
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25
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7215AC
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1.23
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A: Tube packing+carton+pallets
B: single box packing+carton+pallets
C:as customer’s requirement
Shandong Tefule Bearing Co.,Ltd
is a professional bearing manufacturer and dealer in china.We have been engaged in bearing industry for 10 years and made international trade of bearing import and export for more than 8 years.
Our company is specialized in ball bearing,roller bearing,housing units, wheel hub bearing,bearing parts and accessories, cross roller bearing.Also we can customize various large non-standard products such as the most competitive products according to customers’ demands.
FAQ1: Can 7215ACM be used in high-speed CNC machines?
The 7215ACM bearing is well-suited for high-speed CNC machines, especially in spindle applications.
“ACM”: As discussed, the “ACM” suffix denotes a machined brass cage, which is a key feature for high-speed performance:
Lower Friction & Heat Generation: Essential for maintaining thermal stability and preventing premature wear at high RPMs.
Enhanced Lubrication: The design of machined cages often promotes better lubricant flow.
Improved Ball Guidance: Leads to higher running accuracy and stability at speed.
Higher Speed Rating: Bearings with machined brass cages have higher limiting speeds compared to those with pressed steel cages.
When used in CNC machines, 7215ACM bearings are typically configured in paired arrangements (e.g., back-to-back, face-to-face, or tandem) with appropriate preload to achieve the necessary rigidity and combined load capacity for cutting forces and high rotational speeds.
“ACM”: As discussed, the “ACM” suffix denotes a machined brass cage, which is a key feature for high-speed performance:
Lower Friction & Heat Generation: Essential for maintaining thermal stability and preventing premature wear at high RPMs.
Enhanced Lubrication: The design of machined cages often promotes better lubricant flow.
Improved Ball Guidance: Leads to higher running accuracy and stability at speed.
Higher Speed Rating: Bearings with machined brass cages have higher limiting speeds compared to those with pressed steel cages.
When used in CNC machines, 7215ACM bearings are typically configured in paired arrangements (e.g., back-to-back, face-to-face, or tandem) with appropriate preload to achieve the necessary rigidity and combined load capacity for cutting forces and high rotational speeds.
FAQ2: What is the difference between AC and ACM angular contact bearings?
The difference between “AC” and “ACM” angular contact bearings typically refers to the cage material and design, which impacts their performance characteristics.
a. AC (e.g., 7215AC): This designation usually indicates a pressed steel cage.
Characteristics: Cost-effective, robust for general industrial applications, good for moderate speeds and loads.
Limitations: May have higher friction and heat generation compared to more advanced cages, and generally not preferred for very high-speed or high-precision applications.
Common Applications: Gearboxes, pumps, and general machinery.
Characteristics: Cost-effective, robust for general industrial applications, good for moderate speeds and loads.
Limitations: May have higher friction and heat generation compared to more advanced cages, and generally not preferred for very high-speed or high-precision applications.
Common Applications: Gearboxes, pumps, and general machinery.
b. ACM (e.g., 7215ACM): This designation typically indicates a machined brass cage (M) with a specific design.
Characteristics:
Lower Friction & Heat: Brass has excellent sliding properties, leading to less friction and heat generation.
Higher Speed Capability: Better suited for higher rotational speeds due to improved lubrication flow and lower operating temperatures.
Improved Stiffness & Precision: Machined cages generally offer better guidance for the balls, contributing to higher running accuracy and stiffness.
Better Lubrication: Machined cages can have specific designs that enhance lubricant circulation.
Good for High Temperatures: Brass maintains its properties well at elevated temperatures.
Limitations: More expensive than pressed steel cages.
Common Applications: Machine tool spindles, high-speed gearboxes, precision machinery where speed, precision, and low heat generation are critical.
In summary, ACM variants offer superior performance in terms of speed, heat management, and precision due to their machined brass cage, making them suitable for more demanding applications than standard AC (pressed steel cage) bearings.
Characteristics:
Lower Friction & Heat: Brass has excellent sliding properties, leading to less friction and heat generation.
Higher Speed Capability: Better suited for higher rotational speeds due to improved lubrication flow and lower operating temperatures.
Improved Stiffness & Precision: Machined cages generally offer better guidance for the balls, contributing to higher running accuracy and stiffness.
Better Lubrication: Machined cages can have specific designs that enhance lubricant circulation.
Good for High Temperatures: Brass maintains its properties well at elevated temperatures.
Limitations: More expensive than pressed steel cages.
Common Applications: Machine tool spindles, high-speed gearboxes, precision machinery where speed, precision, and low heat generation are critical.
In summary, ACM variants offer superior performance in terms of speed, heat management, and precision due to their machined brass cage, making them suitable for more demanding applications than standard AC (pressed steel cage) bearings.
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