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NTN 1207KC3 self-aligning ball bearing with a 35 mm straight bore and C3 clearance. This single-row bearing accommodates misalignment and is suitable for applications with shaft deflection or mounting errors.
MODEL 1207KC3
$73.16 Each
Prices are subject to change
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Returnable:No
B (in)
0.6693
Ball Material
Steel
Ball material
Steel
Bore Type
Tapered
Bore type
Tapered
Cage Material
Steel
Cage material
Steel
Cage Type
Pressed
Cage type
Pressed
Configuration
One
D (in)
2.8346
d (in)
1.3780
Da max
2.5787 in
da min
1.6339 in
Dynamic Load Rating
3550 lbf
Dynamic load rating
3550 lbf
Enclosure
Open
I.D.
35 mm
Limiting Speed - Grease
8500 RPM
Limiting speed - grease
8500 RPM
Limiting Speed - Oil
10000 RPM
Limiting speed - oil
10000 RPM
Material
High carbon chrome steel
O.D.
72 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
Class 0
r (in)
0.0433
Radial Internal Clearance
C3
Radial internal clearance
C3
ras max
0.0394 in
Seal material
None
Seal type
None
Static Load Rating
1150 lbf
Static load rating
1150 lbf
Type
Self Aligning Ball Bearing
Y0
2.80
Y1
2.70
Y2
4.20
Technical Specifications
Type | Self Aligning Ball Bearing |
|---|---|
Bore Type | Tapered |
Material | High Carbon Chrome Steel |
Cage Type | Pressed |
Cage Material | Steel |
Ball Material | Steel |
Limiting Speed - Oil | 10000 RPM |
Limiting Speed - Grease | 8500 RPM |
Y1 | 2.70 |
Y2 | 4.20 |
Y0 | 2.80 |
Seal Type | None |
Seal Material | None |
Precision | Class 0 |
Configuration | One |
Radial Internal Clearance | C3 |
Static Load Rating | 1150 lbf5100 N5.10 kN |
Dynamic Load Rating | 3550 lbf15900 N15.90 kN |
Enclosure | Open |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 1.3780 in35.000 mm |
|---|---|
D | 2.8346 in72.000 mm |
B | 0.6693 in17.000 mm |
r | 0.0433 in1.100 mm |
da min | 1.6339 in41.500 mm |
Da max | 2.5787 in65.500 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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