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NTN 6021ZZ is a 60 series single-row deep groove ball bearing with a 105 mm straight bore. It features double metal shields (ZZ) for protection against contaminants while maintaining low friction. Suitable for electric motors, pumps, and general industrial rotating machinery.
MODEL 6021ZZ
$310.79 Each
Prices are subject to change
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Typically Ships in: 1 day
Returnable:No
B (in)
1.0236
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)
6.2992
d (in)
4.1339
da max
4.685 in
Da max
5.9449 in
da min
4.4882 in
Dynamic Load Rating
18090 lbf
Dynamic load rating
18090 lbf
Enclosure
Double Shielded
Factor
15.8
I.D.
105 mm
Limiting Speed - Grease
4000 RPM
Limiting speed - grease
4000 RPM
Material
High carbon chrome steel
O.D.
160 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 0
r (in)
0.0787
r1
0.0197 in
Radial Internal Clearance
CN
Radial internal clearance
CN
ras max
0.0787 in
Seal material
None
Seal type
None
Static Load Rating
14700 lbf
Static load rating
14700 lbf
Type
Deep Groove Ball Bearing
Width
26 mm
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 - Grease | 4000 RPM |
Seal Type | None |
Seal Material | None |
Precision | ISO Class 0 |
Configuration | One |
Factor | 15.8 |
Radial Internal Clearance | CN |
Static Load Rating | 14700 lbf65500 N65.50 kN |
Dynamic Load Rating | 16300 lbf72500 N72.50 kN |
Enclosure | Double Shielded |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 4.1339 in105.000 mm |
|---|---|
D | 6.2992 in160.000 mm |
B | 1.0236 in26.000 mm |
r | 0.0787 in2.000 mm |
r1 | 0.0197 in0.500 mm |
da min | 4.4882 in114.000 mm |
da max | 4.6850 in119.000 mm |
Da max | 5.9449 in151.000 mm |
ras max | 0.0787 in2.000 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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