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NTN 7305BGC3 single-row angular contact ball bearing with a 25 mm straight bore. Open enclosure with a steel cage and C3 clearance. Constructed from high carbon chrome steel for durability in high-speed and axial load applications.
MODEL 7305BGC3
$106.18 Each
Prices are subject to change
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Returnable:No
a (Load Center)
1.0630 in
B (in)
0.6693
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
Contact angle
40 º
D (in)
2.4409
d (in)
0.9843
Da max
2.1654 in
da min
1.2598 in
Db max
2.2638 in
db min
1.1614 in
Double Row Width
1.3386 in
Dynamic Load Rating
5500 lbf
Dynamic load rating
5500 lbf
Enclosure
Open
I.D.
25 mm
Limiting Speed - Grease
13000 RPM
Limiting speed - grease
13000 RPM
Limiting Speed - Oil
17000 RPM
Limiting speed - oil
17000 RPM
Material
High carbon chrome steel
O.D.
62 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 0
Quadruple Row Width
2.6772 in
r (in)
0.0433
r1
0.0236 in
r1as max
0.0236 in
Radial Internal Clearance
C3
Radial internal clearance
C3
ras max
0.0394 in
Static Load Rating
3300 lbf
Static load rating
3300 lbf
Triple Row Width
2.0079 in
Type
Angular Contact Ball Bearing
Technical Specifications
| Type | Angular Contact Ball Bearing |
|---|---|
| Bore Type | Round |
| Material | High Carbon Chrome Steel |
| Cage Type | Pressed |
| Cage Material | Steel |
| Ball Material | Steel |
| Limiting Speed - Oil | 17000 RPM |
| Limiting Speed - Grease | 13000 RPM |
| Precision | ISO Class 0 |
| Configuration | One |
| Radial Internal Clearance | C3 |
| Static Load Rating | 3300 lbf14600 N14.60 kN |
| Dynamic Load Rating | 5500 lbf24400 N24.40 kN |
| Enclosure | Open |
| Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
| d | 0.9843 in25.000 mm |
|---|---|
| D | 2.4409 in62.000 mm |
| B | 0.6693 in17.000 mm |
| r | 0.0433 in1.100 mm |
| r1 | 0.0236 in0.600 mm |
| Contact Angle | 40 |
| a (Load Center) | 1.0630 in27.000 mm |
| da min | 1.2598 in32.000 mm |
| db min | 1.1614 in29.500 mm |
| Da max | 2.1654 in55.000 mm |
| Db max | 2.2638 in57.500 mm |
| ras max | 0.0394 in1.000 mm |
| r1as max | 0.0236 in0.600 mm |
| Double Row Width | 1.3386 in34.000 mm |
| Triple Row Width | 2.0079 in51.000 mm |
| Quadruple Row Width | 2.6772 in68.000 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.
