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NTN 51207 single direction thrust ball bearing with a 35 mm straight bore. Designed for axial loads in one direction, this bearing features a shaft washer, housing washer, and ball and cage assembly. Suitable for vertical shaft applications in gearboxes and machine tools.
MODEL 51207
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$61.63 Each
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Brand Minimum Order Quantity: 2
Typically Ships in: 1 day
Returnable:No
Ball Material
Steel
Ball material
Steel
Bore Type
Round
Bore type
Round
Cage Material
Resin
Cage material
Resin
Cage Type
Molded
Cage type
Molded
Configuration
One
D (in)
2.4409
d (in)
1.3780
d1
2.4409 in
D1
1.4567 in
Da max
2.0079 in
da min
2.0079 in
Dynamic Load Rating
8750 lbf
Dynamic load rating
8750 lbf
Enclosure
Open
I.D.
35 mm
Limiting Speed - Grease
2900 RPM
Limiting speed - grease
2900 RPM
Limiting Speed - Oil
4200 RPM
Limiting speed - oil
4200 RPM
Material
High carbon chrome steel
O.D.
62 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Outside Ring Type
Straight
Precision
ISO class 0
r (in)
0.0394
Radial Internal Clearance
CN
Radial internal clearance
CN
ras max
0.0394 in
Seal material
None
Seal type
None
Static Load Rating
17500 lbf
Static load rating
17500 lbf
T (in)
0.7087
Type
Thrust Ball Bearing
Technical Specifications
| Type | Thrust Ball Bearing |
|---|---|
| Bore Type | Round |
| Outside Ring Type | Straight |
| Material | High Carbon Chrome Steel |
| Cage Type | Molded |
| Cage Material | Resin |
| Ball Material | Steel |
| Limiting Speed - Oil | 4200 RPM |
| Limiting Speed - Grease | 2900 RPM |
| Seal Type | None |
| Seal Material | None |
| Precision | ISO Class 0 |
| Configuration | One |
| Radial Internal Clearance | CN |
| Static Load Rating | 17500 lbf78000 N78.00 kN |
| Dynamic Load Rating | 8750 lbf39000 N39.00 kN |
| Enclosure | Open |
| Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
| d | 1.3780 in35.000 mm |
|---|---|
| D1 | 1.4567 in37.000 mm |
| d1 | 2.4409 in62.000 mm |
| D | 2.4409 in62.000 mm |
| T | 0.7087 in18.000 mm |
| r | 0.0394 in1.000 mm |
| da min | 2.0079 in51.000 mm |
| Da max | 2.0079 in51.000 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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