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ES Industrial Solutions
#171, Thamini Towers
Subban Chetty Street
Theni - 625531.

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Thrust Bearing

ESIS, the Manufacturer, Exporter & Importer and Suppliers of "Thrust Bearing" Jaw Crusher Wear Parts. We provide and Supply High Quality and High Grade of Thrust Bearing the Genuine Jaw Crusher Spare parts

Jaw crushers are equipped with one fixed and one spindles exert a direct influence on the thrust bearing trestle. All parts of the adjusting system are accessible, maintenance-free and easy to replace. When considering the adjustable clearance, line contact, true rolling motion and ability to carry both radial and thrust loads, the tapered roller bearing is an obvious choice for all jaw crushers.

Better Bearing Care

If operators must frequently replace damaged bearings or suspect they simply are not getting the life out of their bearings that they expect, a few simple steps to follow and options to explore can improve the performance and uptime of machines in crushing circuits.

Lubrication

Poor lubrication is a leading cause of bearing failure in most industrial applications, including crushers. A proper re-lubrication schedule is critical to maintain appropriate bearing operating temperatures, which affect lubricant viscosity and life. As a general rule, a lubricant should maintain a minimum viscosity of 105 SUS (21.8 cSt) at the bearing operating temperature. In most cases, the Original EOEM collaborates with the bearing manufacturer to develop a recommended re-lubrication schedule.

Operators and maintainers should follow the OEM re-lubrication schedule to help maximize the bearing life. They also should take further care not to over lubricate bearings. In grease lubrication systems, over-greasing can lead to excessive heat generation from lubricant churning. The excessive heat breaks down the lubrication and can cause premature bearing failure. Mixing different greases or other lubricants should also be avoided, as this can result in breakdowns and may cause premature failure. To ensure that re-lubrication practices remain on point, one call to a qualified expert can save hours – or days – of unscheduled downtime.

Bearing Fit on Shaft and in Housing

Proper fitting of roller bearings to shafts and in housings also is critical to performance. If the fit is too tight or too loose, problems including creep, excessive vibration and premature failure may occur. Recommended fit values should be re-visited each time crusher bearings are replaced or repaired. For instance, a shaft that has been reused repeatedly can be slightly smaller than the day the machine was commissioned. An undersized shaft – even at extremely small scales – can cause improper bearing fit and cause premature bearing failure. Also, over time, bearing housings can get worn or become out of round. Both conditions can cause improper bearing support and premature failure. If concerns about proper shaft and housing dimensions arise, operators should consult an expert to evaluate the proper bearing shaft and housing fits.

Damage Analysis

Upon replacement, thorough bearing inspection can uncover issues with the shaft or housing fits, lubrication or re-lubrication activity, or contamination from poor sealing. Conducting an in-depth bearing inspection and determining the failure mode provides the opportunity to address the root cause of the bearing failure, helping to improve bearing performance with a replacement.

Crusher bearing damage often relates to contamination, improper lubrication and fretting (metal-to-metal wear). Here’s how to identify common modes:

  • Abrasive Wear and Debris Denting are two of the most common damage modes caused by contamination. Typically, abrasive wear appears frosty gray. Debris particles also can dent the surface of the races and rollers, which can lead to spalling damage. Frequent re-lubrication helps to purge contamination from the bearing. Persistent contamination problems could be a sign of improper sealing.
  • Inadequate Lubrication can be caused by improper viscosity, too little or too much lubricant, or lubricant breakdown. Inadequate lubrication can result in fine grain spalling, heat damage, and oxidized lubricant staining.
  • Fretting or Fretting Corrosion normally affects the bore (Fig. 3F) or the outer diameter of a bearing. It typically results from a loose fit, leading to relative motion between the bearing and the shaft or housing. Corrosion that results from fretting should be removed from the bearing area because it is abrasive and will damage the bearings and seals. Using the proper shaft and housing fits should minimize the amount of fretting damage to the bearing
  • Availability: Pre-Order

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