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NTN 5310NRC3 is a double-row angular contact ball bearing with a 50 mm straight bore. It features an open enclosure, steel cage, and a snap ring groove on the outer ring. This bearing accommodates combined radial and axial loads in applications such as pumps, compressors, and gearboxes.
MODEL 5310NRC3
$226.39 Each
Prices are subject to change
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Returnable:No
A (in)
0.1209
a (in)
2.5787
B (in)
1.7480
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)
1.9685
D (in)
4.3307
D1
4.1850 in
D2
4.5906 in
Da max
3.9370 in
da min
2.3622 in
Dynamic Load Rating
18300 lbf
Dynamic load rating
18300 lbf
Enclosure
Open
f (in)
0.1063
I.D.
50 mm
Limiting Speed - Grease
4300 RPM
Limiting speed - grease
4300 RPM
Limiting Speed - Oil
5600 RPM
Limiting speed - oil
5600 RPM
Material
High carbon chrome steel
O.D.
110 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Outside Ring Type
Straight
Precision
Class 0
r (in)
0.0787
Radial Internal Clearance
C3
Radial internal clearance
C3
ras max
0.0787 in
Static Load Rating
13800 lbf
Static load rating
13800 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 | 5600 RPM |
Limiting Speed - Grease | 4300 RPM |
Precision | Class 0 |
Configuration | Two |
Radial Internal Clearance | C3 |
Static Load Rating | 13800 lbf61500 N61.50 kN |
Dynamic Load Rating | 18300 lbf81500 N81.50 kN |
Enclosure | Open |
Weight | 3.985 lb1.808 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 1.9685 in50.000 mm |
D | 4.3307 in110.000 mm |
B | 1.7480 in44.400 mm |
A | 0.1209 in3.070 mm |
D2 | 4.5906 in116.600 mm |
D1 | 4.1850 in106.300 mm |
f | 0.1063 in2.700 mm |
r | 0.0787 in2.000 mm |
Contact Angle | 25 |
a | 2.5787 in65.500 mm |
da min | 2.3622 in60.000 mm |
Da max | 3.9370 in100.000 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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