Four Point Contact Ball Slewing Bearing

Description:

The design’s of all these slewing rings are based on standard structures; LYNBC can design and manufacture many other similar structures in accordance to the special and particular requirements of their customers. If our customers have specific requests then the customer should identify the structure, and mounting dimensions that are required. Please contact the LYNBC Technical center if you need any assistance in this area.

Four-point contact ball slewing bearing:

LYNBC Four-point contact ball slewing bearing can carry axial loads, tilting moment and radial loads all at the same time. Almost all steel balls will carry load under the combined action of axial load and tilting moment load. Steel balls are in contact with the raceway of outer ring and inner on a single-point when carrying pure axial load.

When radial loads exceed a certain value there would be two points respectively for the contacting balls within the outer and inner raceway. Meanwhile, wear and friction moment would be large. The tilting moment and radial force loading in any kind of working conditions allow the contact angle to be adjusted accordingly.

LYNBC Four-point contact ball slewing bearing in the main consist of a inner ring, outer ring, a single row of steel balls, and a cage (or spacing block).

LYNBC Four-point contact ball slewing bearing inner ring, outer ring have integral and split structure. The rigidity of the integral rings is relatively good in holding its rigidity. The split structure is fastened by bolts, this facilitates for a more convenient adjustment process.

Normally LYNBC Four point contact ball slewing bearing have cages (or spacing blocks). The full ball types has a larger load carrying capacity. In some situations this type would be selected for heavy loading applications. However, this design has a high frictional resistance, this could cause nicks on all surface.

The mounting needs will suit mounting holes that are designed as straight hole, counter hole, thread blind hole, or thread through hole and etc.

This contact ball design slewing bearing is suitable under axial load, tilting moment and small frictional resistance applications. The contact mounting surface must have adequate radial rigidity.

The basic structures of LYNBC four-point contact ball slewing bearing as below:

Without gear

External gear

Internal gear

▲ The design’s of all these slewing bearing are based on standard structures; LYNBC can design and manufacture many other similar structures in accordance to the special and particular requirements of their customers’. If our customer’s have specific requests then the customer should identify the structure, and mounting dimensions that are required. Please contact the LYNBC Technical Center if you need any assistance in this area.

Parameters

Designation			Boundary Dimension			Mounting Hole Size				Gear Data							Basic load ratings	Mass (Kg)
No Gear	External Gear	Internal Gear	D	d	H	D₁	D₂	n	Φ	m	Da	Z	da	Z	b	x	Coa(10KN)	Mass (Kg)
010.30.500	011.30.500	013.30.500	602	398	80	566	434	20	18	5	630	123	365	74	60	0.5	129	75.8
	012.30.500	014.30.500	602	398	80	566	434	20	18	6	630	102	366	62	60	0.5	129	75.8
010.30.560	011.30.560	013.30.560	662	458	80	626	494	20	18	5	690	135	425	86	60	0.5	144	94
	012.30.560	014.30.560	662	458	80	626	494	20	18	6	690	112	427	72	60	0.5	144	94
010.30.630	011.30.630	013.30.630	732	528	80	696	564	24	18	6	774	126	492	83	60	0.5	187	110
	012.30.630	014.30.630	732	528	80	696	564	24	18	8	776	94	488	62	60	0.5	187	110
010.30.710	011.30.710	013.30.710	812	608	80	776	644	24	18	6	852	139	570	86	60	0.5	212	120
	012.30.710	014.30.710	812	608	80	776	644	24	18	8	856	104	568	72	60	0.5	212	120
010.40.800	011.40.800	013.40.800	922	678	100	878	722	30	22	8	968	118	632	80	80	0.5	313	256
	012.40.800	014.40.800	922	678	100	878	722	30	22	10	970	94	630	64	80	0.5	313	256
010.40.900	011.40.900	013.40.900	1022	778	100	978	822	30	22	8	1064	130	736	93	80	0.5	355	240
	012.40.900	014.40.900	1022	778	100	978	822	30	22	10	1070	104	730	74	80	0.5	355	240
010.40.1000	011.40.1000	013.40.1000	1122	878	100	1078	922	36	22	10	1190	116	820	83	80	0.5	394	305
	012.40.1000	014.40.1000	1122	878	100	1078	922	36	22	12	1188	96	816	69	80	0.5	394	305
010.40.1120	011.40.1120	013.40.1120	1242	998	100	1198	1042	36	22	10	1300	127	940	95	80	0.5	443	300
	012.40.1120	014.40.1120	1242	998	100	1198	1042	36	22	12	1308	106	936	79	80	0.5	443	300
010.45.1250	011.45.1250	013.45.1250	1390	1110	110	1337	1163	40	26	12	1449.5	118	1048.8	88	90	0.5	554	420
	012.45.1250	014.45.1250	1390	1110	110	1337	1163	40	26	14	1453.2	101	1041.6	75	90	0.5	554	420
010.45.1400	011.45.1400	013.45.1400	1540	1260	110	1487	1313	40	26	12	1608	131	1188	100	90	0.5	617	480
	012.45.1400	014.45.1400	1540	1260	110	1487	1313	40	26	14	1610	112	1190	86	90	0.5	617	480
010.45.1600	011.45.1600	013.45.1600	1740	1460	110	1687	1513	45	26	14	1820	127	1386	100	90	0.5	702	550
	012.45.1600	014.45.1600	1740	1460	110	1687	1513	45	26	16	1824	111	1376	87	90	0.5	702	550
010.45.1800	011.45.1800	013.45.1800	1940	1660	110	1887	1713	45	26	14	2016	141	1568	113	90	0.5	793	610
	012.45.1800	014.45.1800	1940	1660	110	1887	1713	45	26	16	2016	123	1568	99	90	0.5	793	610
010.60.2000	011.60.2000	013.60.2000	2178	1825	144	2110	1891	48	33	16	2272	139	1728	109	120	0.5	1210	1100
	012.60.2000	014.60.1400	2178	1825	144	2110	1891	48	33	18	2268	123	1728	97	120	0.5	1210	1100
010.60.2240	011.60.2240	013.60.2240	2418	2065	144	2350	2131	48	33	16	2496	153	1984	125	120	0.5	1350	1250
	012.60.2240	014.60.2240	2418	2065	144	2350	2131	48	33	18	2502	136	1980	111	120	0.5	1350	1250
010.60.2500	011.60.2500	013.60.2500	2678	2325	144	2610	2391	56	33	18	2772	151	2232	125	120	0.5	1500	1400
	012.60.2500	014.60.2500	2678	2325	144	2610	2391	56	33	20	2780	136	2220	112	120	0.5	1500	1400
010.60.2800	011.60.2800	013.60.2800	2978	2625	144	2910	2691	56	33	18	3078	168	2520	141	120	0.5	1680	1600
	012.60.2800	014.60.2800	2978	2625	144	2910	2691	56	33	20	3080	151	2520	127	120	0.5	1680	1600
010.75.3150	011.75.3150	013.75.3150	3376	2922	174	3286	3014	56	45	20	3480	171	2820	142	150	0.5	2380	2800
	012.75.3150	014.75.3150	3376	2922	174	3286	3014	56	45	22	3476	115	2816	129	150	0.5	2380	2800
010.75.3550	011.75.3550	013.75.3550	3776	3322	174	3686	3414	56	45	20	3880	191	3220	162	150	0.5	2690	3200
	012.75.3550	014.75.3550	3776	3322	174	3686	3414	56	45	22	3894	174	3212	147	150	0.5	2690	3200
010.75.4000	011.75.4000	013.75.4000	4226	3772	174	4136	3864	60	45	22	4334	194	3652	167	150	0.5	3020	3600
	012.75.4000	014.75.4000	4226	3772	174	4136	3864	60	45	25	4350	171	3650	147	150	0.5	3020	3600
010.75.4500	011.75.4500	013.75.4500	4726	4272	174	4636	4364	60	45	22	4835.6	217	4166.8	190	150	0.5	3410	4000
	012.75.4500	014.75.4500	4726	4272	174	4636	4364	60	45	25	4845	191	4160	167	150	0.5	3410	4000
No Gear	External Gear	Internal Gear	D	d	H	D₁	D₂	n	Φ	m	Da	Z	da	Z	b	x	Coa(10KN)	Mass (Kg)
Designation			Boundary Dimension			Mounting Hole Size				Gear Data							Basic load ratings	Mass (Kg)