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NTN BL210ZNR is a single-row deep groove ball bearing with a 50 mm straight bore, single shielded enclosure, and snap ring groove. Features a steel cage and high carbon chrome steel construction. Designed for general industrial rotating equipment such as electric motors, pumps, and fans.
MODEL BL210ZNR
$97.56 Each
Prices are subject to change
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Typically Ships in: 1 day
Returnable:No
a (in)
0.1291
B (in)
0.7874
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)
3.5433
d (in)
1.9685
D1
3.4169 in
D2
3.7992 in
da max
2.3622 in
Da max
3.2874 in
da min
2.2244 in
Enclosure
Single Shielded
f (in)
0.0949
I.D.
50 mm
Limiting Speed - Grease
6400 RPM
Limiting speed - grease
6400 RPM
Limiting Speed - Oil
7500 RPM
Limiting speed - oil
7500 RPM
Material
High carbon chrome steel
O.D.
90 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 0
r (in)
0.0433
r1
0.0197 in
Radial Internal Clearance
CN
Radial internal clearance
CN
ras max
0.0394 in
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 | 7500 RPM |
Limiting Speed - Grease | 6400 RPM |
Precision | ISO Class 0 |
Configuration | One |
Radial Internal Clearance | CN |
Enclosure | Single Shielded |
Weight | 1.133 lb0.514 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 1.9685 in50.000 mm |
D | 3.5433 in90.000 mm |
B | 0.7874 in20.000 mm |
D1 | 3.4169 in86.790 mm |
D2 | 3.7992 in96.500 mm |
a | 0.1291 in3.280 mm |
f | 0.0949 in2.410 mm |
r | 0.0433 in1.100 mm |
r1 | 0.0197 in0.500 mm |
da min | 2.2244 in56.500 mm |
da max | 2.3622 in60.000 mm |
Da max | 3.2874 in83.500 mm |
ras max | 0.0394 in1.000 mm |
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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