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NTN 5312C3 double-row angular contact ball bearing with a 60 mm straight bore. Open type with C3 clearance. Designed for combined radial and axial loads in pumps, compressors, and gearboxes.
MODEL 5312C3
$225.97 Each
Prices are subject to change
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Returnable:No
a (in)
3.1299
B (in)
2.1260
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)
5.1181
d (in)
2.3622
Da max
4.6457 in
da min
2.8346 in
Dynamic Load Rating
28100 lbf
Dynamic load rating
28100 lbf
Enclosure
Open
I.D.
60 mm
Limiting Speed - Grease
3400 RPM
Limiting speed - grease
3400 RPM
Limiting Speed - Oil
4500 RPM
Limiting speed - oil
4500 RPM
Material
High carbon chrome steel
O.D.
130 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Outside Ring Type
Straight
Precision
Class 0
r (in)
0.0827
Radial Internal Clearance
C3
Radial internal clearance
C3
ras max
0.0787 in
Static Load Rating
22100 lbf
Static load rating
22100 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 | 4500 RPM |
| Limiting Speed - Grease | 3400 RPM |
| Precision | Class 0 |
| Configuration | Two |
| Radial Internal Clearance | C3 |
| Static Load Rating | 22100 lbf98500 N98.50 kN |
| Dynamic Load Rating | 28100 lbf125000 N125.00 kN |
| Enclosure | Open |
| Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
| d | 2.3622 in60.000 mm |
|---|---|
| D | 5.1181 in130.000 mm |
| B | 2.1260 in54.000 mm |
| r | 0.0827 in2.100 mm |
| Contact Angle | 25 |
| a | 3.1299 in79.500 mm |
| da min | 2.8346 in72.000 mm |
| Da max | 4.6457 in118.000 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 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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