VLU200644 Light Type Slewing Bearings with Dual Flange

• Customization: Available
• Standard or Nonstandard: Standard
• Sealing Gland: Sealed On Both Sides
• Model NO.: VLU200644
• Rolling-Element Number: Single-Row
• Roller Type: Four Point Contact Ball
• Material: 50mn or 42CrMo or S48c
• Type: No Gear
• Brand: Lyhy
• Custom Design: Available
• Company History: Since Year 1993
• Delivery Time: 35-40days
• Testing: in House or Third Party
• Warranty: 12months Against Bl
• Forging Hardness: Hb229-269
• Transport Package: Plywood Case
• Specification: ISO2001: 9008
• Trademark: LYHY
• Origin: China
• HS Code: 848210900
• Production Capacity: 6000PCS Per Year

Product Description

Product Description

 

 

1. Light series 20 slewing bearing with dual flange, without gear teeth

2.  material : rings material is 50MN, 42CRMO OR S48C
                    steel ball material is high quality chrome steel

                    Retainer material is nylon

3.dimension range: pitch circle diameter from 414-1094mm

                                       

four point contact ball slewing bearing light series 20 (series VLU) (dual flange)
VLU200414N	VLU200544N	VLU200644N	VLU200744N	VLU200844N
VLU200944N	VLU2001094N

 

Detailed Photos

 

 
 

About LYHY bearings
1.introduction:we are a manufacturer of slewing bearing since 1993, our factory occupies a area of 30000square meters with 4 workshop and 1 office building. 
2. Featured products: slewing bearing and slewing drive
3. Capital: Current is 1 million RMB, but we are increasing the capital to 10 million RMB
4. Workers: 40
5. Certificate: ISO9001:2008, 3.1 certificate, CCS certificate, Science and Technology Progress Award
6. Annual Exportation: 8million USD
7. Exported countries: (60)
Asia: India, Pakistan, Iran, Signore, Georgia, Malaysia, Vietnam, Thailand, Philippines, Israel, Korea, UAE, Sri Lanka, Saudi Arabia,
Europe: urkey, Russia, Spain, Czech Republic, Italy, Poland, Slovakia, Bosnia and Herzegovina, Austria, France, Germany, Switzerland, Finland, Ukraine, UK
America: USA, Canada, Mexico, Brazil, Puerto Rico, Peru, Chile
Africa: South Africa, Egypt
Oceania: Australia

 

Equipment List

LYHY Slewing Bearing Types
LYHY slewing bearings can be divided into the following types as per  their structures:
single row four point contact ball slewing bearing,
single row cross roller slewing bearing,
double row different ball diameter slewing bearing,
three row cylindrical roller slewing bearing and roller/ball combination slewing bearing.
And all these types of slewing bearings can be further divided into bearings without gears, bearings with external gears and bearings with internal gears.



Detailed description of these types slewing bearings

Single row four point contact ball slewing bearings
     This kind of slewing bearings can support high dynamic loads, transmitting axial and radial forces simultaneously as well as the resulting tilting moments. Applications of this kind of bearings are hoisting, mechanical handling and general mechanical engineering etc.
Single row cross roller slewing bearings
     This kind of bearings can support combinations of large radial force, medium axial force and tilting moment with small or zero clearance. Main applications of this kind of bearings are hoisting and mechanical handling and general mechanical engineering etc.
Double row different ball diameter slewing bearings
     This kind of bearings can support high static loads with simple structures. They are mainly used in situations with variation load position and direction and continuously rotating. Main applications of this kind of bearings are deck hoisting, mining and material handling etc.
Triple row cylindrical roller slewing bearings
     This kind of bearings has high load carrying capacity. Under same loads, this kind of bearings has much smaller diameters which can make the installation much compact, as different kinds of loads are supported by different races and rollers. Main applications of this kind of bearings are hoisting, mechanical handling, mining and materials handling, offshore technology and general mechanical engineering etc.
Roller/ball combination slewing bearings
     This kind of bearings can support high axial load and low tilting moments. Usually they are large diameter slewing bearings. Applications of this kind of bearings are mining and materials handling etc.
   

Production Process of LYHY slewing bearings


Quality Control Process of LYHY slewing bearings


 

Receiving Inspection(forging inspection)

• Inspect the Raw Materials: Check the quality certificates of the raw materials such as steel plates and forgings to ensure that they meet the specified requirements. Examine the surface quality of the materials for any defects like cracks, scars, or pits. Conduct chemical composition analysis and mechanical property tests on the raw materials to verify their compliance with the standards.
• Verify the Dimensions: Measure the key dimensions of the raw materials, such as the diameter, thickness, and length, to ensure they are within the allowable tolerance range. Use measuring tools like calipers, micrometers, and laser trackers for accurate measurement.

 

In - process Inspection

• Inspect the Machining Process: During the machining of the slewing bearing, check the accuracy of each process, including turning, milling, drilling, and grinding. Ensure that the surface roughness, dimensional accuracy, and geometric tolerance of the parts meet the design requirements. Regularly measure the dimensions of the work - in - process and compare them with the process drawings to detect any deviations in a timely manner.
• Check the Heat Treatment: Monitor the heat treatment process to ensure that the slewing bearing components obtain the required mechanical properties. Check the temperature, time, and cooling rate during heat treatment to ensure they are in accordance with the process regulations. Perform hardness tests and microstructure analysis on the heat - treated parts to verify the effectiveness of the heat treatment.
• Inspect the Welding Quality: For slewing bearings with welded structures, check the welding process parameters, such as welding current, voltage, and welding speed. Inspect the weld appearance for any defects like cracks, pores, and incomplete penetration. Use non - destructive testing methods such as ultrasonic testing, radiographic testing, and magnetic particle testing to detect internal welding defects.

Final Inspection

• Visual Inspection: Examine the surface of the slewing bearing for any scratches, burrs, or paint defects. Check the overall appearance of the bearing to ensure that it meets the aesthetic requirements. Inspect the assembly quality, including the installation of seals, lubrication systems, and retaining rings, to ensure they are properly installed.
• Dimensional Inspection: Measure all the key dimensions of the slewing bearing, including the outer diameter, inner diameter, width, and gear dimensions. Ensure that the dimensions are within the specified tolerance range. Use precision measuring instruments to perform comprehensive dimensional verification.
• Functional Testing: Conduct rotational tests to check the smoothness of the slewing bearing's rotation and measure the friction torque. Test the load - carrying capacity of the bearing according to the specified requirements to ensure that it can withstand the designed load. Check the sealing performance of the bearing to prevent oil leakage and dust ingress.
• Packaging Inspection: Inspect the packaging of the slewing bearing to ensure that it is suitable for transportation and storage. Check if the packaging materials, such as wooden cases and protective films, can effectively protect the bearing from damage. Verify that the packaging is labeled with the correct product information, including the model, specification, and batch number.

 

LYHY Slewing Bearing Packing 

Bearing surface is covered with the anti-rust oil first; and then wrapped with the plastic film;
And then packed with kraft paper and professional belts;
At last, with wooden box totally at the outer packing to invoid the rust or the moist;
We can depend on the customers  demand to be packed;

Transportation:


All LYHY slewing ring bearings can be usually delivered timely, usual production time is 15-50 days based on different slew bearings diameters, sometimes slew rings will be in stock.
Slewing bearings can be offered different delivery terms, such as EXW, FOB, CIF, DDU and so on. 
Also, slewing rings can be transported by different transport ways, by express (such as DHL, TNT, UPS, FEDEX and so on), by air, by sea, by truck, by railway and so on.

 

Slewing Ring Bearings------Applications:
Slewing ring bearings are widely used in industry and known as "the machine joints" Here under is the specific slewing bearing applications
1. Construction machinery (e.g. cranes, excavators, loader, scraper)
2. Metallurgical machinery (e.g. for steel plant)
3. Heavy machinery equipment (e.g. mining machinery, concrete machinery)
4. Marine machinery equipment (e.g. vessel, port hoisting machine, port oil transfer equipment, onshore and offshore crane)
5. Light machinery equipment (e.g. paper machine, plastic, rubber machine, weave machine)
6. Wind power generator
8. Packing machinery

INSTALLATION OF LYHY SLEWING BEARINGS

Preparation:
Make sure that the model is correct and slewing bearing isn't damaged during transportation.
2.  Check the appearance and rotational state of the bearing, such as rotational precision clearance, rotating flexibility, seals position, lubrication grease etc.
3.  The installation datum plane and bracket installing plane should be clean, grease, burr, paint and other foreign body should be wiped off.

Installation:

1. The screws in the installing plane should be fit with the mounting holes in the slewing bearing
2.  The slewing bearing has a soft zone marked with an "s" on the upper surface, when installing the bearing, it is important to ensure that this area is placed in a non-load or infrequent load zone.
3.  When the bearing is placed on the supporting frame work it is important to check the interface between these two surfaces. This check should be carried out with the insertion of feel gauges between the two surfaces. If a gap should exist then it is recommended to plane/resurface the effective area so as to remove the gap.
4.  Install slewing bearing with high strength screws, and choose appropriate strength bolts. All bolts are required to be tightened evenly. The sequence of this tightening process is shown in Pic. Welding of bearing is not allowed, in the event of welding any adjacent parts, heat transfer shall be avoided so as to cause the bearing to become deformed or change the hardness.
5.  After installation, the bearing should be rotated to check for smooth operation and any emission of unusual noise. If either of the aforementioned are noted, then the bearing should be adjusted to eliminate them. The teeth of the largest run-out are coated with green paint.
 

FAQ:

Q: Are LYHY BEARINGS trading company or manufacturer?
A: LYHY BEARINGS is a professional manufacturer for slewing bearings, thin section bearings, ball bearings and rolling bearings

Q: How do LYHY BEARINGS control quality of their bearing?
A: LYHY BEARINGS has established strict quality control systems, all the products and services has passed ISO9001-2008 Quality Certificate and third party such as CCS, LR,ABS,BV


Q: What is the MOQ?
A: MOQ is 1pc, pls message us for detailed information.

Q: How about the package for LYHY bearings?
A: Standard Industrial packing in general condition (Plastic tube+ professional plastic belts+ plywood case). Accept design package when OEM.

Q: How long is the production time?
A: It takes about 7-40 days, depends on the model and quantity.

Q: How about the shipping?
A: We can arrange the shipment or you may have your own forwarder.

Q: Is sample available?
A: Yes, sample order is acceptable.

Q: Can we use our own LOGO or design on bearings?
A: Yes. OEM is acceptable for LYHY BEARINGS. We can design as per your requirements and use your own LOGO and package design.

four point contact ball slewing bearing light series 20 (series VLA) (external gear internal flange)
VLA200414N	VLA200544N	VLA200644N	VLA200744N	VLA200844N
VLA200944N	VLA2001094N
four point contact ball slewing bearing light series 20 (series VLI) (iternal gear external flange)
VLI200414N	VLI200544N	VLI200644N	VLI200744N	VLI200844N
VLI200944N	VLI2001094N
four point contact ball slewing bearing light series 20 (series VLU) (dual flange)
VLU200414N	VLU200544N	VLU200644N	VLU200744N	VLU200844N
VLU200944N	VLU2001094N
four point contact ball slewing bearing standard series 20 (series VSA) (external gear)
VSA200414N	VSA200544N	VSA200644N	VSA200744N	VSA200844N
VSA200944N	VSA2001094N
four point contact ball slewing bearing standard series 20 (series VSI) (internal gear)
VSI200414N	VSI200544N	VSI200644N	VSI200744N	VSI200844N
VSI200944N	VSI2001094N
four point contact ball slewing bearing standard series 20 (series VSI) (without gear)
VSU200414N	VSU200544N	VSU200644N	VSU200744N	VSU200844N
VSU200944N	VSU2001094N
four point contact ball slewing bearing standard series 25 (series VSA) (external gear)
VSA 25 0755 N	VSA 25 0855 N	VSA 25 0955 N	VSA 25 1055 N
four point contact ball slewing bearing standard series 25 (series VSI) (internal gear)
VSI 25 0755 N	VSI 25 0855 N	VSI 25 0955 N	VSI 25 1055 N
four point contact ball slewing bearing standard series 25 (series VSU) (without gear)
VSU 25 0755 N	VSU 25 0855 N	VSU 25 0955 N	VSU 25 1055 N
four point contact ball slewing bearing  (series VA) (external gear)
VA 140188V	VA 160235 N	VA 16 0302 N	VA 25 0309 N
four point contact ball slewing bearing  (series VI) (internal gear)
VI 160288N	VI 140326V	VI 160420N
four point contact ball slewing bearing  (series VU) (without gear)
VU 140179	VU 200220	VU 130225	VU20 0260	VU 14 0325
VU 250380	VU 200405	VU 250433	VU 30 0574	VU 36 0680
crossed roller slewing bearing standard series 14 (series XSA XA) (external gear)
XSA140414N	XSA140544N	XSA14044N	XSA140744N	XSA140844N
XSA140944N	XSA141094N	XA 120235N	XA 200352H
crossed roller slewing bearing standard series 14 (series XSI XI) (internal gear)
XSI140414N	XSI140544N	XSI14044N	XSI140744N	XSI140844N
XSI140944N	XSI141094N	XI 120288N
crossed roller slewing bearing standard series 14 (series XSU XU) (without gear)
XSU140414N	XSU140544N	XSU14044N	XSU140744N	XSU140844N
XSU140944N	XSU141094N	XU050077	XU060094	XU060111
XU080120	XU080149	XU120179	XU120222	XU160260
XU080264	XU160405	XU080430	XU300515