Large Diameter Slewing Ring Slewing Ring Bearing for Offshore Crane

• Customization: Available
• Standard or Nonstandard: Standard
• Sealing Gland: Sealed On Both Sides
• Model NO.: 1787/2650G2
• Roller Type: Four Point Contact Ball
• Material: 50mn or 42CrMo
• Type: External Gear
• Production Experience: Since Year 1993
• Warranty Period: 1 Year
• Delivery Time: 30-40 Days
• Bore Diameter: 2650mm
• Outer Diameter: 2949.6mm
• Height: 100mm
• Weight: 751kg
• Certificate: ISO9001:2008
• Testing Way: Inner House /SGS/ BV
• Surface Treatment: Black Epoxy Paint
• Transport Package: Wooden Box
• Specification: 200mm-6600mm
• Trademark: LYHY
• Origin: China
• HS Code: 848210900
• Production Capacity: 300PCS/Month

Product Description

Technical parameter for 1787/2650G2 slewing ring, ring bearing
ID: 2650MM
OD: 2949.6MM
H: 100MM
W. T.: 751KG
Holes in outer ring: 48-M20
Holes in inner ring: 48-M20
Material: 42CrMo
Application: Offshore crane

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;


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

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.

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.


 

Model	Dimension			Mounting dimension						Structure dimension						Gear parameter					Rated Load	Weight (kg)
	D	d	H	D1(mm)	D2	n1	n2	φ1(mm)	φ2(mm)	D3 (mm)	d1 (mm)	H1 (mm)	h	n3 (mm)	φ3(mm)	m	Da (mm)	Z	b(mm)	x
Internal Gear
2788/850K	976	850	80	--	--	--	--	--	--	916	919	80	--	--	--	2	816	456	20	0	174	117
3-646G2	1200	--	56	1170	1044	16	24	17.5	10.5	1088	1092	46	12	4	M8*1	6	985	166	44	0	210	84.1
2782/1000GK	1270	1000	100	1220	1050	24/2*2	24/2*2	17/M12	17/M12	1133	1137	85	15	2	M10*1	6	972.6	164	70	0	384	322
2787/1210G2	1530	1210	122	1480	1260	40	40	26	26	1368	1372	108	12	4	M10*1	10	1164	118	80	0	713	540
2787/1400GK	1715	1400	110	1660	1460	24	24	M20	M20	1558	1562	95	15	2	M12*1.25	6	1364.5	230	77	-0	365	545
2787/1400GK1	1715	1400	110	1660	1460	24	24	23	23	1558	1562	95	15	2	M10*1	6	1364.5	230	77	-0	365	545
2787/1440	1780	1440	100	1730	1494	48	48	22	M20	1618	1622	85	10	4	M12*1.25	8	1400	177	50	0	503	554
2787/1440G	1780	1440	100	1730	1494	48	48	22	M20	1618	1622	85	10	4	M12*1.25	8	1400	177	50	0	578	554
2768/1440G	1780	1440	104	1730	1494	48	48	22	M20	1613	1627	87	10	6	M12*1.25	8	1400	177	52	0	578	555
2787/1525G2	1875	1525	140	1815	1585	42	42	29	29	1698	1702	122	17	4	M12*1.25	16	1452.3	92	110	0.4	873	1019
2788/1712	2050	1790	112	2006	1847	36	72	22	22	1925	1926	92	12	18	M10*1	16	1712	108	100	-1	604	663
2789/2230	2488	2230	160	2445	2275	48	48	M20	M22	2337.5	2342.5	135	5	8	ZG1/4in	18	2144.3	121	145	0	1247	1114
2789/2240G2	2500	2240	140	2454	2280	56	56	M24	M24	2357.5	2362.5	115	5	8	M14*1.5	18	2145.6	121	125	0	856	1161
2789/2735	2990	2735	160	2954	2770	48	48	M20	M24	2835	2845	135	5	8	ZG1/4in	22	2624.6	121	144	0	1559	1457
External Gear
D178794	694	470	77	630	500	18	18	M16	18	567.5	564.5	64	13	6	M10*1	6	696	114	60	0	157	93.1
1787/600G	786	600	72	740	636	20	24	M18*2.5	19	689	691	60	7	4	ZG1/8in	6	789	131	50	0	107	94.1
1787/674G2	853	674	70	825	709	34	23	20	M20	764	768	59	10	2	ZG1/8in	7	889	125	50	0	183	89
1787/674G2K	853	674	70	825	709	34	24	18	18	764	768	59	10	2	ZG1/8in	7	889	125	50	0	183	88.6
1787/710G2	894	710	67	845	744	8	8	M10	M10	798	806	58	9	3	M10*1	6	924	152	55	0	179	107
1787/710G2K	894	710	67	875	760	8	12	M10	M12	798	806	58	9	3	M10*1	6	924	152	55	0	179	107
1787/710G2K1	894	710	67	865	744	20	20	13	13	798	806	58	9	4	M10*1	6	924	152	55	0	179	107
1787/800G	1050	800	90	1012	838	30	30	20	20	923	927	76	16	3	M10*1	6	1092	180	60	0	215	217
1787/800GK	1050	800	90	1012	838	30	30	20	20	923	927	76	16	3	M10*1	6	1092	180	60	0	215	217
1788/1040G2	--	1040	80	1220	1080	30	30	M16	17.5	1153	1157	70	10	--	--	10	1314.1	125	70	0	297	251
1787/1060G	1335	1060	109	1295	1105	24	24	M20	22	1198	1202	100	9	4	M8*1	10	1388	138	80	-1	501	407
1787/1075	1365	1075	120	1310	1130	36	36	26	26	1218	1222	105	15	4	M8*1	8	1424	176	90	0	463	463
1787/1075K	1365	1075	130	1310	1130	36	36	24	24	1218	1222	105	10	--	--	10	1420	140	120	0	463	550
1787/1075G2	1365	1075	120	1310	1130	36	36	24	24	1218	1222	105	15	4	M10*1	10	1424.9	138	90	1.4	463	463
1787/1075G2K	1365	1075	120	1310	1130	36	36	M24	26	1218	1222	105	15	4	M8*1	8	1424	176	90	0	463	463
1787/1330G2	1475	1330	82	1510	1362	24	24	18.5	18.5	1439	1445	70	12.4	6	M10*1	9	1584	174	70	0	353	280
3-647G	1407	1352	100	1370	1404	18	13	M8	M10	1390	1394	63	--	8	6	5	1449	320	60	0	216	143
1788/1410G2	--	1410	85	1590	1454	36	36	M16	17.5	1524.6	1528.6	70	15	--	--	10	1676.4	160	70	0	395	312
1787/1640G	2050	1640	160	1990	1710	30	30	28	28	1844	1856	140	20	2	M14*1.5	10	2108	210	105	-1	1118	1264
1787/1700	1945	1700	120	1900	1750	24	24	M18	21	1825	1845	110	10	4	M10*1	5	1970	392	35	0	405	516
1789/1700GM	2052	1700	100	1980	1780	24	24	20	M18	1878	1882	90	10	4	M14*1.5	5	2080	414	50	0	551	678
1787/2650G2	2885	2650	100	2850	2700	48	48	M20	M20	2777	2781	80	10	6	ZG1/4in	12	2949.6	244	80	0	913	751