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NTN 51112 single direction thrust ball bearing with a 60 mm straight bore. Designed for axial loads in one direction, this bearing features a separable design for easy mounting and dismounting. Suitable for machine tool spindles, clutches, and vertical shaft applications.
MODEL 51112
$31.51 Each
Prices are subject to change
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Returnable:No
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
d (in)
2.3622
D (in)
3.3465
D1
2.4409 in
d1
3.3465 in
Da max
2.9528 in
da min
2.9528 in
Dynamic Load Rating
9350 lbf
Dynamic load rating
9350 lbf
Enclosure
Open
I.D.
60 mm
Limiting Speed - Grease
2600 RPM
Limiting speed - grease
2600 RPM
Limiting Speed - Oil
3700 RPM
Limiting speed - oil
3700 RPM
Material
High carbon chrome steel
O.D.
85 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
25400 lbf
Static load rating
25400 lbf
T (in)
0.6693
Type
Thrust Ball Bearing
Width
17 mm
Technical Specifications
Type | Thrust 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 | 3700 RPM |
Limiting Speed - Grease | 2600 RPM |
Seal Type | None |
Seal Material | None |
Precision | ISO Class 0 |
Configuration | One |
Radial Internal Clearance | CN |
Static Load Rating | 25400 lbf113000 N113.00 kN |
Dynamic Load Rating | 9350 lbf41500 N41.50 kN |
Enclosure | Open |
Weight | 0.600 lb0.272 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.
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