Protection from the exterior. Effer cranes’ rotation bearing is equipped with a leak-tight seal between the rotary rings, to prevent water and dust entering in the tracks.

GEARS OF REDUCED DIMENSIONS

1. BACKLASH RECOVERY ADJUSTERS

   No more backlash. Effer rack rotation system foresees the use of an adjuster which can reduce the mechanical backlash between column and rack over time.

   

   GREASING IN ONE POINT

   All together. Effer designed the rack rotation system so that all the base greasing points are close to make maintenance operations easier.

   

   2.Slewing Ring Bearing condition monitoring to ensure safe crane operation

   

   There are several vital design components of a crane, including slew ring bearings. These bearings allow the crane to rotate 360 degrees, while sustaining the load of the crane slewing bearing and associated weights, including the payload and counterbalance. A failure of the slew ring bearing would result in an operational breakdown that could end in catastrophe.

   Other potential outcomes of crane failures include increased replacement and maintenance costs for your business. Luckily, there are several ways in which you can assess and prevent potential failures from occurring. One of those methods is condition monitoring.

   WHAT IS CONDITION MONITORING?

   Condition monitoring is a testing method that allows a company to uncover how the specific bearings being tested are performing while the machine is in operation. As a result, potential equipment failures can be detected early on and remedied well in advance. For slew ring bearings, purged grease is analyzed.

   Carefully thought out and documented sampling techniques are a must for condition monitoring to be successful. Inadequate condition monitoring procedures can provide companies with a false sense of security that can land said companies in a dangerous position down the line. Proper sampling of used grease will not only compliment your other monitoring strategies, but also shed light on the actual condition of your bearings.

   First, you’ll want to perform a standard grease analysis. This test with provide insights into the batch consistency of your grease. However, a standard grease analysis will not provide you with the full picture and must be supplemented with additional tests. You will want to also conduct tests that identify the presence of contaminants within the grease samples. Generally, a bearing’s grease will accumulate a variety of materials due to the following factors:

   • General operation
   • Overload
   • Fatigue

   It is recommended that companies test six to eight sampling locations per bearing. The results should then be trended. Your company will be able to see an accurate visual representation of your specific bearing’s performance and pivot if necessary. If deterioration is present, it will be shown through the trend report.

   Visual inspections should be utilized as well. Generally, if you can see a crack or other defect, you’re already in need of a repair, but it’s good to cover your bases regardless. You can never have too much monitoring, especially if it prevents catastrophes from happening.

   Condition monitoring will allow your company to catch potential failures in their infancy. From there, your company will be able to remedy current risks as well as create systems centered around preventing risks from occurring in the first place.

   Do you have a condition monitoring plan for your cranes or other heavy machinery? Tell us about it in the comments.

   Cranes are robust machines with a wide range of motion and high load capabilities. Slew rings play a valuable role in crane operation, which is why durable designs and regular maintenance are vital to a ring’s overall function. At SlewMaster Inc., our slew rings for cranes offer durability from beginning to end. With regular maintenance, our components are a cost-effective solution for any design.

   The Function of a Crane Slewing Bearing

   In lifting equipment like cranes, slew rings create a joint between the undercarriage and the upper structure of the machine. These bearings allow cranes to turn 360 degrees while supporting other diverse movement requirements, from thrust and radial motion to tilting. The crane slewing bearing open design allows hydraulic systems and other control components to pass through the ring for more efficient use of space.

   Slew rings play a critical role in crane operation due to their many responsibilities. While crane slewing rings regulate many movement types, they also withstand the weight of the equipment and its various loads, including payload and counterbalance.

   Crane Slewing Bearing/Crane Slewing Ring Bearing:

   Since cranes are rated at their maximum capable lifting load, it is important to review how far away from the center of the crane this load can be lifted. This is directly related to the crane slew bearing and is referred to as “Tiling Moment Capacity.” A crane may have multiple vital components for its operation, but a slew ring is the most critical component in designing a crane load chart. Overall, the slew ring will reflect how much load a crane can lift, and the allowed distance where this load can be lifted at safe operating conditions.

   Why Is Crane Slewing Bearing Maintenance Important?

   Crane slewing bearings support many of a crane’s functions. If any one of these components fails, the equipment and its operators are at risk. The majority of slew ring failures revolve around overloading, incorrect installation and surface lubrication issues. Among the three problems, lubrication is the most common maintenance mistake.

   Since slewing rings are responsible for various movements and weight balancing, they require high-pressure grease to prevent surface roughening and cracks caused by friction and debris. With enough wear from these factors, slewing rings can spall, leading to complete machine failure.

   Regular lubrication is the solution to early wear in a crane slew ring. During these maintenance checks, individuals should also perform torque checks on bolts to ensure the system is prepared to operate at maximum capacity levels.

   Condition monitoring can also help teams identify system failures as they happen. This type of maintenance check will often require a grease examination to determine the lubricant’s quality and effectiveness in preventing wear.

    

   Work With LYMC to Maintain Your Crane Slewing Ring

   LYMC Bearing carries a selection of slewing rings for your project applications.  Engineers can meet heavy-load requirements in crane designs. The helical teeth configuration allows for pinion meshing and worm gear meshing in slew drives. Our team works with different applications engineers to assist in selecting the appropriate product for their cranes. Through understanding the final crane load requirements, safety factors and material treatments, we are able to provide standard and custom-made solutions across multiple models.

   We use durable materials and advanced slew ring designs to deliver cost-effective solutions to equipment engineers. We act as a technical consultant for your team to find the right slewing ring configuration for your heavy equipment project.

   Our crane slewing bearings are an excellent addition to a machine in the early design process. Our slew rings for cranes are also a valuable replacement if your existing ring starts to spall. With the proper lubrication and maintenance, our slew rings offer longevity and heavy-load performance.

    

   Contact Us for Crane Slew Bearing Solutions

   At LYMC Bearing, we partner with your team to deliver in-stock and custom solutions. Our crane slewing bearing offer longevity with the correct care, making them an excellent addition to any machine. Get in touch with us today to learn more about our products.