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Rollway 7311 B 55 mm Bore Size, 120 mm Outside Diameter, Angular Contact Ball Bearing, Straight Bore, 52100 Bearing Steel, Normal Radial Clearance 55 mm Bore Size, 120 mm Outside Diameter, Angular Contact Ball Bearing, Straight Bore, 52100 Bearing Steel, Normal Radial Clearance
MODEL 7311 B
Contact supplier for technical support on: 800-626-2120
$385.74 Each
Prices are subject to change
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Returnable: Yes
Bore Size (mm)
55
Bore Type
Straight
Cage Material
Steel
Contact Angle
40°
Duplexing
No
Dynamic Load Rating (kN)
78.8
Dynamic Load Rating (lb)
17715
Full Complement/Caged
Caged
Height
4.72
Length
4.72
Material
52100 Bearing Steel
Misalignment
No
Number of Rows
1
O.D. (mm)
120
Overall Width (in)
1.142
Overall Width (mm)
29
Platform
Single Row Angular Contact Ball Bearing
Radial Clearance
Normal
Rolling Element
Ball
Seal Type
Unsealed
Sealed
None
Series
7300B
Speed (Max) Grease (rpm)
4500
Speed (Max) Oil (rpm)
6000
Static Load Rating (kN)
56.4
Version
B
Width
1.14
- Raceway: Asymmetric, circular grooves
- Bigger axial load carrying capacity than standard ball bearings
- Dimensions in accordance with ISO 355:2007
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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