Lr Certified Swivel Bearing Slewing Rings with External Gear Teeth VSA250955n

• Customization: Available
• Standard or Nonstandard: Standard
• Sealing Gland: Sealed On Both Sides
• Model NO.: VSA250955N
• Roller Type: Four Point Contact Ball
• Material: 50mn or 42CrMo4
• Type: External Gear
• Brand: Lyhy
• Custom Design: Available
• Company History: Since Year 1993
• Delivery Time: 25-30days
• Testing: in House or Third Party
• Warranty: 1year
• Forging Hardness: Hb229-269
• Transport Package: Wooden Box
• Specification: ISO2001: 9008
• Trademark: LYHY
• Origin: China
• HS Code: 848210900
• Production Capacity: 6000PCS Per Year

Product Description

Production Description for Slewing Bearing, ring bearing, rolling bearings, turntables, swing bearing
Slewing Bearing VSA250955N    for construction machinery, cranes,shipyard crane
 

1	Type	single row four point contact ball slewing bearing, ring bearing, slewing gear
2	Bore diameter	855mm
3	Outside diameter	1096mm
4	Height	80mm
5	Material	42CrMo, 50Mn
6	Precision	P0. P6. P5.
7	Cage/retainer	Nylon or aluminum
8	Gear type	external gear
9	N.W.	155KGS

Model	Overall dimension(mm)
	Da	di	H
VA160235N	318.6	171	40
VA160235N	318.6	171	40
VA250307N	408.4	235	55
VA250309N	408.4	235	60
VA220407N	503.3	335	50
VSA200414N	503.3	342	56
VSA200414N	503.3	342	56
VA300475N	598.2	382	65
VA400560N	708	464	87
VA200540N	640.3	471	48
VSA200544N	640.3	472	56
VA220596N	712.3	510	55
VA200640N	742.3	571	50
VSA200644N	742.3	572	56
VA300685N	829.9	577	68
VA250720N	844.1	630	59
VSA250755N	898	655	80
VSA200744N	838.1	672	56
VSA200744N	838.1	672	56
VA200753N	862.1	674	50
VA250818N	940.1	728	60
VA400845N	1008	730	87
VSA250855N	997	755	80
VSA200844N	950.1	772	56
VA300895N	1038.1	790	68
VSA250955N	1096	855	80
VSA200944N	1046.1	872	56
VA360995N	1158	882	80
VA300978N	1110.1	883	68
VA200969N	1086.1	890	60
VSA251055N	1198	955	80
VA451117N	1293.6	995	100
VSA201094N	1198.1	1022	56
VSA201094N	1198.1	1022	56
VSA251155N	1298	1055	80
VA401213N	1389.6	1095	92
VSA251255N	1398	1155	80
VA361320N	1485.6	1210	85
VSA251355N	1498	1255	80
VA501455N	1653.6	1317	110
VSA251455N	1598	1355	80
VA401600N	1803.5	1470	92
VA701790N	2027.5	1621	146
VA501765N	1971.5	1622	110
VA501832N	2041.5	1687	110
VA301821N	2013.1	1714	100
VA601985N	2229.1	1826	128
VA502130N	2381.4	1965	118
VA502253N	2457.6	2112	118
VA362304N	2493.4	2190	110
VA502355N	2605.1	2190	118
VA502638N	2861.1	2492	118
VA602815N	3096.8	2640	136
VA602935N	3216.8	2760	136
VA703005N	3272.8	2820	154
VA603170N	3436.8	2995	136
VA703365N	3633.1	3180	154
VA703585N	3867.1	3400	154
VA703765N	4047.5	3580	154
VA704157N	4436.8	3970	154

Why choose LYHY slewing bearings
A pioneer in slewing bearing field, rich experience, can do design, produce, mounting guide
Small order accepted
ISO certified company
Variorum models
7*24hours hotline to help you with your cranes
Strict quality control system to ensure quality for slewing bearing


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.

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: (39)
Asia: India, Pakistan, Iran, Signore, Georgia, Malaysia, Vietnam, Thailand, Philippines, Israel, Korea, UAE, Sri Lanka, Saudi Arabia,
Europe: Turkey, 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


Production Process of LYHY slewing bearings


Quality Control Process of LYHY slewing bearings


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
7. 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.