Three Row Cylindrical Roller Slewing Bearings

Description

Three Row Cylindrical Roller Slewing Bearings

Three-row cylindrical roller slewing bearings are mainly composed of an inner ring, outer ring, three-row rollers, cage (spacer block), sealing device, etc. This slewing bearing design is suitable for most large-scale occasions with axial load and tilting moment, enormous radial load, or lower requirements for the frictional moment. Three-row cylindrical roller slewing bearings can simultaneously bear axial, tilting, and radial loads. Compared with the cylindrical cross roller slewing bearing, the load of each roller is reduced. Compared with double row roller slewing bearings, point contact becomes line contact, and the contact stress is reduced.

Features of three-row cylindrical roller slewing bearings

Suitable for highest axial loads and tilting moments.
Suitable for large connecting structures.
Usually, three-row cylindrical roller slewing bearings are used for some heavy machinery.

The basic structures of three-row cylindrical roller slewing bearings are as below:

(1) Without gear

(2) External gear

(3) Internal gear

Product parameters

(1) Model parameters of externally toothed three-row cylindrical roller slewing bearings

Model	Dimensions							Installation size						Tooth parameters				Load	Weight
	De	de	di	Di	He	Hi	Ht	Fe	Ne	V	Fi	Ni	V	m	z	Dp	x·m
	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]	[-]		[mm]	[-]		[mm]	[-]	[mm]	[mm]	[kN]	[kg]
3R25-E-0500	665	526	537	366	116	138	148	598	24	18	402	24	18	5	130	650	5	2750	224
3R25-E-0560	725	586	597	426	116	138	148	658	24	18	462	24	18	5	142	710	5	3080	240
3R25-E-0630	808	593	604	496	116	138	148	728	28	18	532	28	18	8	98	784	8	3450	270
3R25-E-0710	888	673	684	576	116	138	148	808	28	18	612	28	18	8	108	864	8	3880	300
3R30-E-0800	1008	830	841	636	142	172	182	920	36	22	680	36	22	8	123	984	8	5490	500
3R30-E-0900	1104	930	941	736	142	172	182	1020	36	22	780	36	22	8	135	1080	8	6190	600
3R30-E-1000	1220	1030	1041	836	142	172	182	1120	40	22	880	40	22	10	119	1190	10	6890	680
3R30-E-1120	1340	1150	1161	956	142	172	182	1240	40	22	1000	40	22	10	131	1310	10	7680	820
3R40-E-1250	1512	1200	1210	1055	170	210	220	1393	45	26	1107	45	26	14	105	1470	14	11100	1200
3R40-E-1400	1666	1350	1360	1205	170	210	220	1543	45	26	1257	45	26	14	116	1624	14	12400	1300
3R40-E-1600	1872	1550	1560	1405	170	210	220	1743	48	26	1457	48	26	16	114	1824	16	14200	1520
3R40-E-1800	2072	1840	1850	1605	170	210	220	1943	48	26	1657	48	26	14	145	2030	14	15900	1750
3R45-E-2000	2304	1945	1967	1779	177	219	231	2155	60	33	1845	60	33	18	125	2250	18	20500	2400
3R45-E-2240	2556	2185	2207	2019	177	219	231	2395	60	33	2085	60	33	18	139	2502	18	23100	2700
3R45-E-2500	2820	2445	2467	2279	177	219	231	2655	72	33	2345	72	33	20	138	2760	20	25800	3000

(2) Internal gear type three-row cylindrical roller slewing bearing

Model	Dimensions							Installation size						Tooth parameters				Load	Weight
	De	de	di	Di	He	Hi	Ht	Fe	Ne	V	Fi	Ni	V	m	z	Dp	x·m
	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]	[-]		[mm]	[-]		[mm]	[-]	[mm]	[mm]	[kN]	[kg]
3R25-I-0500	634	526	537	335	138	116	148	598	24	18	402	24	18	5	68	340	5	2750	224
3R25-I-0560	694	586	597	395	138	116	148	658	24	18	462	24	18	5	80	400	5	3080	240
3R25-I-0630	764	656	667	456	138	116	148	728	28	18	532	28	18	6	77	462	6	3450	270
3R25-I-0710	844	736	747	534	138	116	148	808	28	18	612	28	18	6	90	540	6	3880	300
3R30-I-0800	964	759	770	590	172	142	182	920	36	22	680	36	22	10	60	600	10	5490	500
3R30-I-0900	1064	930	941	688	172	142	182	1020	36	22	780	36	22	8	87	696	8	6190	600
3R30-I-1000	1164	1030	1041	780	172	142	182	1120	40	22	880	40	22	10	79	790	10	6890	680
3R30-I-1120	1284	1150	1161	900	172	142	182	1240	40	22	1000	40	22	10	91	910	10	7680	820
3R40-I-1250	1445	1200	1210	980	210	170	220	1393	45	26	1107	45	26	14	71	994	14	11100	1200
3R40-I-1400	1595	1350	1360	1134	210	170	220	1543	45	26	1257	45	26	14	80	1150	14	12400	1300
3R40-I-1600	1795	1550	1560	1328	210	170	220	1743	48	26	1457	48	26	16	84	1344	16	14200	1520
3R40-I-1800	1995	1750	1760	1520	210	170	220	1943	48	26	1657	48	26	16	96	1536	16	15900	1750
3R45-I-2000	2221	1945	1967	1692	219	177	231	2155	60	33	1845	60	33	18	95	1710	18	20500	2400
3R45-I-2240	2461	2273	2295	1920	219	177	231	2395	60	33	2085	60	33	16	121	1936	16	23100	2700
3R45-I-2500	2721	2533	2555	2178	219	177	231	2655	72	33	2345	72	33	18	122	2196	18	25800	3000

(3) Gearless three-row cylindrical roller slewing bearing model parameters

Model	Dimensions							Installation size						Load	Weight
	De	de	di	Di	He	Hi	Ht	Fe	Ne	V	Fi	Ni	V
	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]	[mm]	[-]		[mm]	[-]		[kN]	[kg]
3R25-U-0500	634	526	537	366	138	116	148	598	24	18	402	24	18	2750	224
3R25-U-0560	694	586	597	426	138	116	148	658	24	18	462	24	18	3080	240
3R25-U-0630	764	656	667	496	138	116	148	728	28	18	532	28	18	3450	270
3R25-U-0710	844	736	747	576	138	116	148	808	28	18	612	28	18	3880	300
3R30-U-0800	964	830	841	636	172	142	182	920	36	22	680	36	22	5490	500
3R30-U-0900	1064	930	941	736	172	142	182	1020	36	22	780	36	22	6190	600
3R30-U-1000	1164	1030	1041	836	172	142	182	1120	40	22	880	40	22	6890	680
3R30-U-1120	1284	1150	1161	956	172	142	182	1240	40	22	1000	40	22	7680	820
3R30-U-1250	1445	1290	1300	1055	210	170	220	1393	45	26	1107	45	26	11100	1200
3R40-U-1400	1595	1440	1450	1205	210	170	220	1543	45	26	1257	45	26	12400	1300
3R40-U-1600	1795	1640	1650	1405	210	170	220	1743	48	26	1457	48	26	14200	1520
3R40-U-1800	1995	1840	1850	1605	210	170	220	1943	48	26	1657	48	26	15900	1750
3R45-U-2000	2195	2041	2055	1816	137	117	150	2127	60	33	1885	60	33	16900	1120
3R45-U-2240	2461	2273	2295	2019	219	177	231	2395	60	33	2085	60	33	23100	2700
3R45-U-2500	2721	2533	2555	2279	219	177	231	2655	72	33	2345	72	33	25800	3000

Application of three-row cylindrical roller slewing bearing

Three-row cylindrical roller slewing bearing has three rings, which separate the upper, lower, and radial races via loads of each row of rollers. It can carry different loads simultaneously, and its load capacity is the largest among the slewing bearings. It is sturdy and especially suitable for heavy-duty machines which require a large working radius, such as bucket-wheel excavators, wheeled cranes, marine cranes, ladle turrets, heavy-duty mobile cranes, etc.

FAQ

Q. Are you a factory or a trading company?

A: We are a manufacturer.

Q: Do you accept ODM&OEM orders?

A: Yes, we provide ODM&OEM services to worldwide customers, we can customize housings in different styles and sizes in other brands, and we also customize packaging boxes as per your requirements.

Q: Do you offer free samples?

A: Yes, we offer free small samples to distributors and wholesalers. Pls, note that if your bearings are more significant, we will send you the same materials/identical brands, for example. However, customers should bear the freight.

We DO NOT offer free samples to end-users.

Q: What's the MOQ?

A: MOQ is 10pcs for standardized products; for customized products, MOQ should be negotiated in advance.

Q: How long is the lead time?

A: Normally, the lead time is about 3-7days. If it is a customized order, the lead time will be reconfirmed, about 10-15days.

Q: How to place orders?

A: 1. Email us the model, brand and quantity, consignee information, shipping way, and payment terms;

2. Proforma Invoice made and sent to you;

3. Complete Payment after confirmed the PI;

4. Confirm Payment and arrange the production.

Product Quick Detail:

Standard and non-standard available
With high quality and competitive price
Prompt delivery
Packing as per customer’s demand.

We promise will offer the best price by the high quality in china! We also accept special order about the products. If you are interested in our products. Please do not hesitate to let us know.We are pleased to give you the detailed information.We promise that our products would be safety and were in high quality and reasonable price. If you are interested in our products, please contact us asap.We are sincerely looking for your cooperation.

Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.

pruduct quality report

Materials Available

1. Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS420
2. Steel:C45(K1045), C46(K1046),C20
3. Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58), C27200(CuZn37), C28000(CuZn40)
4. Bronze: C51000, C52100, C54400, etc
5. Iron: 1213, 12L14,1215
6. Aluminum: Al6061, Al6063
7.OEM according to your request
product materials available

Surface Treatment

Annealing, natural canonization, heat treatment, polishing, nickel plating, chrome plating, zinc plating,yellow passivization, gold passivization, satin, Black surface painted etc.

Processing Method

CNC machining, punch,turning, milling, drilling, grinding, broaching, welding and assembly
product finishing

QC & Certificate

Technicians self-check in production,final-check before package by professional Quality inspector
ISO9001:2008 , ISO14001:2001,ISO/TS 16949:2009

Package & Lead Time

Size: Drawings
Wooden Case/Container and pallet, or as per customized specifications.
15-25days samples. 30-45days offcial order
Port: Shanghai/Ningbo port
product packages

Three Row Cylindrical Roller Slewing Bearings

Three Row Cylindrical Roller Slewing Bearings