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NTN R6ZZ extra small series single-row deep groove ball bearing with a 3/8" straight bore. Double shielded (steel) protection on both sides for contaminant exclusion. Compact design for light-duty applications including small motors, instruments, and precision mechanisms.
MODEL R6ZZ
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$22.96 Each
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Brand Minimum Order Quantity: 4
Typically Ships in: 1 day
Returnable:No
B (in)
0.2812
Ball Material
Steel
Ball material
Steel
Bore Type
Round
Bore type
Round
Cage Material
Steel
Cage material
Steel
Cage Type
Stainless
Cage type
Stainless
Configuration
One
D (in)
0.8750
d (in)
0.3750
Dynamic Load Rating
740 lbf
Dynamic load rating
740 lbf
Enclosure
Double Shielded
Factor
12.7
I.D.
9.525 mm
Limiting Speed - Grease
31000 RPM
Limiting speed - grease
31000 RPM
Material
High carbon chrome
O.D.
22.225 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
Class 0
r (in)
0.0160
Radial Internal Clearance
CN
Radial internal clearance
CN
Seal material
None
Seal type
None
Static Load Rating
315 lbf
Static load rating
315 lbf
Type
Miniature / Extra Small Ball Bearing
Technical Specifications
Type | Miniature / Extra Small Ball Bearing |
Bore Type | Round |
Material | High Carbon Chrome |
Cage Type | Stainless |
Cage Material | Steel |
Ball Material | Steel |
Limiting Speed - Grease | 31000 RPM |
Seal Type | None |
Seal Material | None |
Precision | Class 0 |
Configuration | One |
Factor | 12.7 |
Radial Internal Clearance | CN |
Static Load Rating | 315 lbf1400 N1.40 kN |
Dynamic Load Rating | 740 lbf3300 N3.30 kN |
Enclosure | Double Shielded |
Weight | 0.024 lb0.011 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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