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NTN 6218NR is a 62 series single-row deep groove ball bearing with a 90 mm straight bore. Open type with snap ring groove and snap ring included. Suitable for electric motors, pumps, and general industrial machinery where axial retention is required.
MODEL 6218NR
$546.60 Each
Prices are subject to change
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Returnable:No
a (in)
0.1929
B (in)
1.1811
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)
3.5433
D1
6.1110 in
D2
6.6811 in
Da max
5.9449 in
da max
4.2913 in
da min
3.8976 in
Dynamic Load Rating
23820 lbf
Dynamic load rating
23820 lbf
Enclosure
Open
f (in)
0.1110
Factor
14.5
I.D.
90 mm
Limiting Speed - Grease
4000 RPM
Limiting speed - grease
4000 RPM
Limiting Speed - Oil
4700 RPM
Limiting speed - oil
4700 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
Static Load Rating
16100 lbf
Static load rating
16100 lbf
Style
Radial ball bearing
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 | 4700 RPM |
Limiting Speed - Grease | 4000 RPM |
Precision | ISO Class 0 |
Configuration | One |
Factor | 14.5 |
Radial Internal Clearance | CN |
Static Load Rating | 16100 lbf71500 N71.50 kN |
Dynamic Load Rating | 21600 lbf96000 N96.00 kN |
Enclosure | Open |
Weight | 4.850 lb2.200 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 3.5433 in90.000 mm |
D | 6.2992 in160.000 mm |
B | 1.1811 in30.000 mm |
D1 | 6.1110 in155.220 mm |
D2 | 6.6811 in169.700 mm |
a | 0.1929 in4.900 mm |
f | 0.1110 in2.820 mm |
r | 0.0787 in2.000 mm |
r1 | 0.0197 in0.500 mm |
da min | 3.8976 in99.000 mm |
da max | 4.2913 in109.000 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 are the dimensions and typical uses of a 6200 series ball bearing?
A standard 6200 ball bearing has: • 10 mm bore • 30 mm outer diameter • 9 mm width The 6200 series sits within the deep groove ball bearing family and is designed for light to moderate loads at relatively high speeds. You’ll typically find them in electric motors, small gearboxes, pumps, and general industrial equipment. They’re popular because they’re compact, widely available, and cost effective. Different variants exist such as sealed, shielded, or high clearance versions, depending on the application.
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.
#208459
Brand
Nachi Bearing
Model
6218NR
#319264
Brand
SKF Bearing
Model
6218 NR
