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NTN 5203C3 double-row angular contact ball bearing with 17 mm straight bore, open enclosure, and steel cage. C3 clearance accommodates thermal expansion in high-speed applications. Suitable for pumps, compressors, and machine tool spindles requiring combined radial and axial load capacity.
MODEL 5203C3
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$53.42 Each
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Brand Minimum Order Quantity: 2
Typically Ships in: 1 day
Returnable:No
a (in)
0.9449
B (in)
0.6890
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
Two
Contact angle
25 º
D (in)
1.5748
d (in)
0.6693
Da max
1.3780 in
da min
0.8661 in
Dynamic Load Rating
3300 lbf
Dynamic load rating
3300 lbf
Enclosure
Open
I.D.
17 mm
Limiting Speed - Grease
11000 RPM
Limiting speed - grease
11000 RPM
Limiting Speed - Oil
15000 RPM
Limiting speed - oil
15000 RPM
Material
High carbon chrome steel
O.D.
40 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Outside Ring Type
Straight
Precision
Class 0
r (in)
0.0236
Radial Internal Clearance
C3
Radial internal clearance
C3
ras max
0.0236 in
Static Load Rating
2030 lbf
Static load rating
2030 lbf
Type
Angular Contact Ball Bearing
Technical Specifications
Type | Angular Contact Ball Bearing |
|---|---|
Bore Type | Round |
Outside Ring Type | Straight |
Material | High Carbon Chrome Steel |
Cage Type | Pressed |
Cage Material | Steel |
Ball Material | Steel |
Limiting Speed - Oil | 15000 RPM |
Limiting Speed - Grease | 11000 RPM |
Precision | Class 0 |
Configuration | Two |
Radial Internal Clearance | C3 |
Static Load Rating | 2030 lbf9050 N9.05 kN |
Dynamic Load Rating | 3300 lbf14600 N14.60 kN |
Enclosure | Open |
Weight | 0.215 lb0.097 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 0.6693 in17.000 mm |
|---|---|
D | 1.5748 in40.000 mm |
B | 0.6890 in17.500 mm |
r | 0.0236 in0.600 mm |
Contact Angle | 25 |
a | 0.9449 in24.000 mm |
da min | 0.8661 in22.000 mm |
Da max | 1.3780 in35.000 mm |
ras max | 0.0236 in0.600 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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