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NTN 63/28ZC3 6300 series single-row deep groove ball bearing with a 28 mm straight bore. Features a single metal shield (Z) on one side and C3 internal clearance for applications requiring thermal expansion accommodation. Used in electric motors, pumps, fans, and general rotating machinery.
MODEL 63/28ZC3
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$43.45 Each
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Brand Minimum Order Quantity: 2
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B (in)
0.7087
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)
1.1024
D (in)
2.6772
Da max
2.4213 in
da max
1.5157 in
da min
1.3583 in
Dynamic load rating
6650 lbf
Dynamic Load Rating
6650 lbf
Enclosure
Single Shielded
Factor
61.5
I.D.
28 mm
Limiting speed - grease
11000 RPM
Limiting Speed - Grease
11000 RPM
Limiting speed - oil
13000 RPM
Limiting Speed - Oil
13000 RPM
Material
High Carbon Chrome Steel
O.D.
68 mm
Operating temperature range
-40 to 250 ºF
Operating Temperature Range
-40 to 250 °F
Precision
ISO Class 0
r (in)
0.0433
r1
0.0197 in
Radial internal clearance
C3
Radial Internal Clearance
C3
ras max
0.0394 in
Static load rating
3150 lbf
Static Load Rating
3150 lbf
Type
Deep Groove Ball Bearing
Width
18 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 - Oil | 13000 RPM |
| Limiting Speed - Grease | 11000 RPM |
| Precision | ISO Class 0 |
| Configuration | One |
| Factor | 61.5 |
| Radial Internal Clearance | C3 |
| Static Load Rating | 3150 lbf14000 N14.00 kN |
| Dynamic Load Rating | 6000 lbf26700 N26.70 kN |
| Enclosure | Single Shielded |
| Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
| d | 1.1024 in28.000 mm |
|---|---|
| D | 2.6772 in68.000 mm |
| B | 0.7087 in18.000 mm |
| r | 0.0433 in1.100 mm |
| r1 | 0.0197 in0.500 mm |
| da min | 1.3583 in34.500 mm |
| da max | 1.5157 in38.500 mm |
| Da max | 2.4213 in61.500 mm |
| ras max | 0.0394 in1.000 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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