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NTN BL215 single-row deep groove ball bearing with 75 mm straight bore. Open type design with no seals or shields for low-friction operation. Suitable for general industrial applications requiring radial and axial load support in electric motors, pumps, and gearboxes.
MODEL BL215
$182.98 Each
Prices are subject to change
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Returnable:No
B (in)
0.9843
Ball Material
Steel
Ball material
Steel
Bore Type
Round
Bore type
Round
Cage Material
Steel
Cage material
Steel
Cage Type
Pressed
Cage type
Pressed
Configuration
One
d (in)
2.9528
D (in)
5.1181
Da max
4.8031 in
da max
3.563 in
da min
3.2677 in
Enclosure
Open
I.D.
75 mm
Limiting Speed - Grease
4300 RPM
Limiting speed - grease
4300 RPM
Limiting Speed - Oil
5000 RPM
Limiting speed - oil
5000 RPM
Material
High carbon chrome steel
O.D.
130 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
Class 0
r (in)
0.0591
r1
0.0197 in
Radial Internal Clearance
CN
Radial internal clearance
CN
Seal material
None
Seal type
None
Type
Deep Groove Ball Bearing
Technical Specifications
Type | Deep Groove Ball Bearing |
Bore Type | Round |
Material | High Carbon Chrome Steel |
Cage Type | Pressed |
Cage Material | Steel |
Ball Material | Steel |
Limiting Speed - Oil | 5000 RPM |
Limiting Speed - Grease | 4300 RPM |
Seal Type | None |
Seal Material | None |
Precision | Class 0 |
Configuration | One |
Radial Internal Clearance | CN |
Enclosure | Open |
Weight | 2.800 lb1.270 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
How do I choose the right type of bearing for my application?
Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints. For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials. In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design.
What is the difference between deep groove and angular contact ball bearings?
Deep groove ball bearings are the most common type. They’re designed to handle mainly radial loads, but they can also take some axial load in both directions. They’re simple, versatile, and used in everything from motors to conveyors. Angular contact ball bearings are built for combined loads, especially where there’s significant axial force in one direction. They’re often used in pairs and are common in higher precision or higher load applications like pumps and gearboxes. If your load is mostly radial, go deep groove. If axial load matters more, angular contact is usually the better choice.
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