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Consolidated Bearings 3909 is a metric thrust ball bearing designed for axial load applications. This single-direction bearing accommodates high thrust loads in one direction and is suitable for moderate-speed operations. The bearing features hardened steel races and precision-ground balls for reliable performance. Ideal for machine tools, gearboxes, and industrial equipment where axial space is limited.
MODEL 3909
OBSOLETE
Please call 888-671-2883 for Replacement info
Typically Ships in: 1 day
Returnable: Yes
Dimension_dg
45.2 mm
Dimension_dw
45 mm
Dimension_H
28 mm
O.d.
85 mm
- Commonly used in automotive, marine, and aerospace applications
- The above series is also available with a machined bronze cage suffix M
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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