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NTN 623ZZ is a 623 series single-row deep groove ball bearing with a 3 mm straight bore. It features double shielded (steel) seals for protection against contaminants. This compact bearing is suitable for small electric motors, instruments, and precision rotating equipment.
MODEL 623ZZ
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$28.42 Each
Prices are subject to change
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Brand Minimum Order Quantity: 3
Typically Ships in: 1 day
Returnable:No
B (in)
0.1575
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)
0.3937
d (in)
0.1181
Dynamic Load Rating
150 lbf
Dynamic load rating
150 lbf
Enclosure
Double Shielded
Factor
12.7
I.D.
3 mm
Limiting Speed - Grease
50000 RPM
Limiting speed - grease
50000 RPM
Material
High carbon chrome steel
O.D.
10 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 0
r (in)
0.0059
Radial Internal Clearance
CN
Radial internal clearance
CN
Seal material
None
Seal type
None
Static Load Rating
50 lbf
Static load rating
50 lbf
Type
Miniature / Extra Small Ball Bearing
Technical Specifications
Type | Miniature / Extra Small Ball Bearing |
Bore Type | Round |
Material | High Carbon Chrome Steel |
Cage Type | Pressed |
Cage Material | Steel |
Ball Material | Steel |
Limiting Speed - Grease | 50000 RPM |
Seal Type | None |
Seal Material | None |
Precision | ISO Class 0 |
Configuration | One |
Factor | 12.7 |
Radial Internal Clearance | CN |
Static Load Rating | 50 lbf224 N0.22 kN |
Dynamic Load Rating | 144 lbf640 N0.64 kN |
Enclosure | Double Shielded |
Weight | 0.004 lb0.002 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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