We never sell your data to third parties
NTN 51252 single direction thrust ball bearing with 260 mm straight bore. Separable construction for easy mounting and dismounting. Designed for axial loads in one direction in vertical shaft applications such as gearboxes, pumps, and machine tools.
MODEL 51252
$5,320.82 Each
Prices are subject to change
FREE SHIPPING ON ORDERS OVER $100
Select Quantity
Typically Ships in: 1 day
Returnable:No
Ball material
Steel
Ball Material
Steel
Bore type
Round
Bore Type
Round
Cage material
Brass
Cage Material
Brass
Cage type
Machined
Cage Type
Machined
Configuration
One
D (in)
14.1732
d (in)
10.2362
D1
10.3937 in
d1
13.9764 in
Da max
12.5591 in
da min
12.5591 in
Dynamic load rating
99000 lbf
Dynamic Load Rating
99000 lbf
Enclosure
Open
I.D.
260 mm
Limiting speed - grease
530 RPM
Limiting Speed - Grease
530 RPM
Limiting speed - oil
760 RPM
Limiting Speed - Oil
760 RPM
Material
High Carbon Chrome Steel
O.D.
360 mm
Operating temperature range
-40 to 250 ºF
Operating Temperature Range
-40 to 250 °F
Outside Ring Type
Straight
Precision
ISO Class 0
r (in)
0.0827
Radial internal clearance
CN
Radial Internal Clearance
CN
ras max
0.0787 in
Seal material
None
Seal type
None
Static load rating
405000 lbf
Static Load Rating
405000 lbf
T (in)
3.1102
Type
Thrust Ball Bearing
Width
79 mm
Technical Specifications
Type | Thrust Ball Bearing |
Bore Type | Round |
Outside Ring Type | Straight |
Material | High Carbon Chrome Steel |
Cage Type | Machined |
Cage Material | Brass |
Ball Material | Steel |
Limiting Speed - Oil | 760 RPM |
Limiting Speed - Grease | 530 RPM |
Seal Type | None |
Seal Material | None |
Precision | ISO Class 0 |
Configuration | One |
Radial Internal Clearance | CN |
Static Load Rating | 405000 lbf1810000 N1810.00 kN |
Dynamic Load Rating | 99000 lbf440000 N440.00 kN |
Enclosure | Open |
Weight | 53.352 lb24.200 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
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.