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NTN 6318ZZC3/EM is a 63 series single-row deep groove ball bearing with a 90 mm straight bore. It features double shielded steel enclosures, C3 internal clearance, and a machined brass cage. Constructed from high carbon chrome steel, this bearing is designed for electric motors, pumps, and general industrial rotating machinery.
MODEL 6318ZZC3/EM
$460.54 Each
Prices are subject to change
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Returnable:No
B (in)
1.6929
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)
7.4803
d (in)
3.5433
Da max
6.9685 in
da max
4.6457 in
da min
4.0551 in
Dynamic Load Rating
35510 lbf
Dynamic load rating
35510 lbf
Enclosure
Double Shielded
Factor
13.3
I.D.
90 mm
Limiting Speed - Grease
3600 RPM
Limiting speed - grease
3600 RPM
Material
High carbon chrome steel
O.D.
190 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 0
r (in)
0.1181
r1
0.0197 in
Radial Internal Clearance
C3
Radial internal clearance
C3
ras max
0.0984 in
Seal material
None
Seal type
None
Static Load Rating
24100 lbf
Static load rating
24100 lbf
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 - Grease | 3600 RPM |
Seal Type | None |
Seal Material | None |
Precision | ISO Class 0 |
Configuration | One |
Factor | 13.3 |
Radial Internal Clearance | C3 |
Static Load Rating | 24100 lbf107000 N107.00 kN |
Dynamic Load Rating | 32000 lbf143000 N143.00 kN |
Enclosure | Double Shielded |
Weight | 10.825 lb4.910 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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| Brand | MROSupply Fasteners |
| Model | FSTPCK-701235 |
