How To Properly Install Eccentric Cam Locking Style Bearings
Eccentric cam locking bearings are widely used in agriculture. You’ll find them in equipment for harvesting, processing, and more. Our Rex 3000 and Link-Belt spherical roller bearings both offer this locking style through Y and W inner ring options.
Why Eccentric Cam Locks Matter
The cam locking collar provides more holding force than a standard setscrew. That’s a big advantage in tough working conditions.
However, proper installation is critical. You can tighten the collar in either direction. But you must always tighten it in the same direction the shaft rotates. This step is very important.
If you tighten it the wrong way, the bearing can loosen during operation. A loose bearing will fail early and may damage your equipment.
How to Install Eccentric Cam Lock Bearings Correctly
After aligning the collar with the inner ring, tighten it in the correct direction. Then secure the setscrews using the torque values listed in the installation manual.
Before you install the bearing, check the shaft:
- Make sure it is not damaged
- Confirm it is within the recommended size range
These quick checks help prevent problems later.
What Happens When Installation Goes Wrong?
Incorrect installation is one of the leading causes of bearing failure. Issues like improper tightening, contamination, and poor shaft conditions can all shorten bearing life.
Choosing the Right Locking Method for Tough Conditions
Some applications are especially demanding. Equipment like tillers and harvesters often run in dirt, dust, and heavy vibration.
In these cases, choosing the right shaft locking method is key.
Rex 6000 Series Shurlok
The Rex 6000 Series Shurlok uses a tapered adapter design.
It includes:
- A large threaded locknut
- A matching thread on the inner ring
- A tapered adapter sleeve
This lock-nut-to-inner-ring connection makes installation and removal simple. It also provides a very strong grip on the shaft. The long tapered sleeve helps absorb vibration and hold the bearing firmly in place.
Link-Belt Centrik-Lok Series
The Centrik-Lok Series uses a different approach.
Key features include:
- An eight-slit inner ring
- A two-piece collar
- Two heavy-duty socket head cap screws
This design clamps tightly onto the shaft. It delivers about 20% more grip than many other ball bearing clamp systems.
It’s also easy to install and remove. Another benefit is that it can handle slightly undersized shafts—up to 0.003 inches below nominal size.
Don’t Overlook Lubrication
Choosing the right locking method is only part of the solution. In agricultural environments, proper lubrication plays a major role in bearing life. Dirt, moisture, and heavy loads can quickly break down grease and lead to failure.
For best results, follow proven lubrication practices and adjust your schedule based on operating conditions.
Maximize Bearing Life in the Field
If your equipment runs in harsh field conditions, choosing the right bearing and locking method is essential. The right setup will last longer and reduce downtime.
To learn more, explore these options:
- Eccentric Lock
- Shurlok
- Centrik-Lok
- Bearing Wear and Failure Guide
- Lubrication Best Practices for Agriculture
For help, call (317) 273-5781 or reach out to our experts below. You can also check out videos and demos on our YouTube channel.
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Mike Martin
Mike is an Application Engineer for Rexnord's Bearing Division. Since 2014, Mike has been with Regal Rexnord within the Bearing Application Engineering Group. He provides customers' with support such as helping them select the proper Bearing, onsite assistance, maintenance and installation training, and troubleshooting with any issues.
Page Updated: May 28, 2026