2020 Latest Design Excavator Slewing Gear - heavy duty turntable bearings with External gear slewing ring – Wanda

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Our business puts emphasis over the administration, the introduction of talented staff, plus the construction of team building, attempting hard to boost the standard and liability consciousness of personnel customers. Our corporation successfully attained IS9001 Certification and European CE Certification of no tooth slewing bearing, Slewing Bearing For Crane, Crossed Roller Bearing, Honesty is our principle, professional operation is our work, service is our goal, and customers' satisfaction is our future!
2020 Latest Design Excavator Slewing Gear - heavy duty turntable bearings with External gear slewing ring – Wanda Detail:

The contact and bending strength of gears under ultimate and fatigue loads were calculated and verified according to ISO6336-1:2006, ISO6336-2:2006 and ISO6336-3:2006 respectively. Sf is 1.48 and the gear mesh clearance is adjusted for the highest point of radial run out of the slewing bearing gear pitch circle. The minimum tooth clearance is typically 0.03 to 0.04x modulus, and the gear mesh clearance of the pinion gears on the entire circumference needs to be re-checked after final fastening of the slewing bearing. 

Single-row four-point contact ball slewing ring internal ball machining accuracy and internal raceway machining accuracy is not high, or there are quality defects and lack of lubricating oil in the raceway roller and spacer collision, directly affect the smooth operation of the slewing ring and noise, so when checking the slewing ring defects, sometimes by replacing the ball to reduce the frequency of failure.

Due to the gear under load after a long working time, there will be a small piece of metal or strip of metal near the pitch line, pitting or gnawing metal chips off, the formation of pitting or teeth. The slewing bearing tooth surface pitting with the increase in working time and expanding so that the slewing bearing mesh tooth damage, tower crane rotary noise and impact increases, the cycle of impact down the metal particles and accelerate the wear of the slewing ring tooth surface, forming a vicious cycle. In addition, the manufacturing and assembly of the starter motor in the slewing ring mechanism has its own defects to produce impact jitter, and the engagement process of the drive wheel with the slewing bearing is unstable, which also increases the frequency of jitter and reverberation noise decibels.

slewing-bearing

If the weld quality is not up to standard, the weld defect needs to be reworked and rewelded. In the repair welding repair will not only produce new welding stress and the flatness of the machined mounting surface will also have a great impact, at the same time the welding current generated in the slewing bearing through the internal rolling body and slewing ring raceway will also cause some damage. In addition, assembly errors in manufacturing assembly, field installation of the pin threading and bolt preload can also produce abnormal noise or chatter if the requirements are not met.

slewing bearing-22

slewing ring main forms are external and internal type, the large and small gears mesh poorly, sometimes tight, sometimes loose, in the slewing ring tooth run out maximum position meshing too tight produce noise. So the manufacturing process is critical. Slewing bearing just left the factory in idling will issue a steel ball rolling uniform sound, which is normal. Such as in the uniform normal ringing accompanied by another abnormally large ringing is abnormal. There are many reasons for the failure.


Product detail pictures:

2020 Latest Design Excavator Slewing Gear - heavy duty turntable bearings with External gear slewing ring – Wanda detail pictures

2020 Latest Design Excavator Slewing Gear - heavy duty turntable bearings with External gear slewing ring – Wanda detail pictures

2020 Latest Design Excavator Slewing Gear - heavy duty turntable bearings with External gear slewing ring – Wanda detail pictures

2020 Latest Design Excavator Slewing Gear - heavy duty turntable bearings with External gear slewing ring – Wanda detail pictures

2020 Latest Design Excavator Slewing Gear - heavy duty turntable bearings with External gear slewing ring – Wanda detail pictures

2020 Latest Design Excavator Slewing Gear - heavy duty turntable bearings with External gear slewing ring – Wanda detail pictures


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"Quality 1st, Honesty as base, Sincere company and mutual profit" is our idea, in an effort to create consistently and pursue the excellence for 2020 Latest Design Excavator Slewing Gear - heavy duty turntable bearings with External gear slewing ring – Wanda , The product will supply to all over the world, such as: Poland, Chile, Florence, All the imported machines effectively control and guarantee the machining precision for the products. Besides, we have a group of high-quality management personnels and professionals, who make the high-quality products and have the ability to develop new products to expand our market home and abroad. We sincerely expect customers come for a blooming business for both of us.

1. Our manufacturing standard is according to machinery standard JB/T2300-2011, we also has been found the efficient Quality Management Systems(QMS) of ISO 9001:2015 and GB/T19001-2008.

2. We devote ourselves to the R &D of customized slewing bearing with high precision,special purpose and requirements.

3. With abundant raw materials and high production efficiency, the company can supply products to customers as quickly as possible and shorten the time for customers to wait for products.

4. Our internal quality control includes first inspection, mutual inspection, in-process quality control and sampling inspection to ensure product quality. The company has complete testing equipment and advanced testing method.

5. Strong after-sales service team, timely solve customer problems, to provide customers with a variety of services.

  • Perfect services, quality products and competitive prices, we have work many times, every time is delighted, wish continue to maintain!
    5 Stars By Jean from Congo - 2017.10.27 12:12
    Products and services are very good, our leader is very satisfied with this procurement, it is better than we expected,
    5 Stars By Sabrina from Malaysia - 2018.10.01 14:14

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