Features of single-row ball slewing bearing

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Features of single-row ball slewing bearing

The structural characteristics of a single-row ball slewing bearing lie in its compactness and efficiency. This type of bearing is composed of an inner ring, an outer ring, a single row of steel balls, spacers or a cage, and a sealing device.

	No. D_Lmm	Ring Dimension				Mounting Dimension					Structure Dimension					Gear Parameter					Gear Torque		N.W kg
		De mm	D mm	d mm	H mm	D1 mm	D2 mm	n	φ mm	M mm	n1	D3 mm	d1 mm	H1 mm	h mm	b mm	m mm	z	x	k	Normalizin kN	Q&T kN
	011.20.400	499		325	55	448	352	16	13.5	12	2	401	399	46	9	46	5	97	+0.5	0.1	29	44	37
	011.20.450	554		369	55	500	400	16	15.5	14	2	451	449	46	9	46	5	108	+0.5	0.1	29	44	41
	011.30.500	629	602	398	80	566	434	20	18	16	4	501	498	70	10	60	5	123	+0.5	0.1	37	52	89
	012.30.500	628.8	602	398	80	566	434	20	18	16	4	501	498	70	10	60	6	102	+0.5	0.1	45	62	89
	011.20.560	670.8		479	55	610	510	20	15.5	14	4	561	559	46	9	46	6	109	+0.5	0.1	35	53	56
	011.30.560	689	662	458	80	626	494	20	18	16	4	561	558	70	10	60	5	135	+0.5	0.1	37	52	100
	012.30.560	688.8	662	458	80	626	494	20	18	16	4	561	558	70	10	60	6	112	+0.5	0.1	45	62	100
	011.20.630	742.8		543	55	682	578	20	18	16	4	631	629	46	9	46	6	121	+0.5	0.1	35	53	64
	011.30.630	772.8	732	528	80	696	564	24	18	16	4	631	628	70	10	60	6	126	+0.5	0.1	45	62	118
	012.30.630	774.4	732	528	80	696	564	24	18	16	4	631	628	70	10	60	8	94	+0.5	0.1	60	83	118
	011.20.710	820.8		623	55	762	658	24	18	16	4	711	709	46	9	46	6	134	+0.5	0.1	35	53	70
	011.30.710	850.8	812	608	80	776	644	24	18	16	4	711	708	70	10	60	6	139	+0.5	0.1	45	62	131
	012.30.710	854.4	812	608	80	776	644	24	18	16	4	711	708	70	10	60	8	104	+0.5	0.1	60	83	131
	011.25.764	886.8		671	63	823	706	24	18	16	4	765	763	54	9	54	6	145	+0.5	0.1	41	63	100
	011.20.800	930	894	704	70	858	742	20	17	16	4	800	797	60	10	50	6	154	-0.5	0			120
	012.20.800	936	894	704	70	858	742	20	17	16	4	800	797	60	10	50	8	116	-0.5	0			120
	011.25.800	942	904	692	78	864	736	18	22	20	3	800	797	68	10	58	6	156	-0.5	0			150
	012.25.800	952	904	692	78	864	736	18	22	20	3	800	797	68	10	58	8	118	-0.5	0			154
	011.40.800	966.4	922	678	100	878	722	30	22	20	6	801	798	90	10	80	8	118	+0.5	0.1	80	111	219
	012.40.800	968	922	678	100	878	722	30	22	20	6	801	798	90	10	80	10	94	+0.5	0.1	100	140	219
	011.25.900	1048	1004	792	78	964	836	20	22	20	4	900	897	68	10	58	8	130	-0.5	0			170
	012.25.900	1060	1004	792	78	964	836	20	22	20	4	900	897	68	10	58	10	105	-0.5	0			176
	011.40.900	1062.4	1022	778	100	978	822	30	22	20	6	901	898	90	10	80	8	130	+0.5	0.1	80	111	244
	012.40.900	1068	1022	778	100	978	822	30	22	20	6	901	898	90	10	80	10	104	+0.5	0.1	100	140	244
	011.25.980	1110.4		887	63	1039	922	30	18	16	5	981	979	54	9	54	8	136	+0.5	0.1	54	83	130
	011.25.1000	1152	1104	892	78	1064	936	24	22	20	4	1000	997	68	10	58	8	143	-0.5	0			191
	012.25.1000	1160	1104	892	78	1064	936	24	22	20	4	1000	997	68	10	58	10	115	-0.5	0			194
	011.35.1000	1160	1120	876	90	1074	926	24	24	22	4	1000	996	80	10	70	8	144	-0.5	0			238
	012.35.1000	1170	1120	876	90	1074	926	24	24	22	4	1000	996	80	10	70	10	116	-0.5	0			244
	011.40.1000	1188	1122	878	100	1078	922	36	22	20	6	1001	998	90	10	80	10	116	+0.5	0.1	100	140	294
	012.40.1000	1185.6	1122	878	100	1078	922	36	22	20	6	1001	998	90	10	80	12	96	+0.5	0.1	120	167	284
	011.25.1120	1278		1013	79	1183	1057	30	22	20	5	1121	1119	54	9	70	10	125	+0.5	0.1	88	135	191
	011.35.1120	1300	1240	996	90	1194	1046	28	24	22	4	1120	1116	80	10	70	10	129	-0.5	0			286
	012.35.1120	1308	1240	996	90	1194	1046	28	24	22	4	1120	1116	80	10	70	12	108	-0.5	0			289
	011.40.1120	1298	1242	998	100	1198	1042	36	22	20	6	1121	1118	90	10	80	10	127	+0.5	0.1	100	140	318
	012.40.1120	1305.6	1242	998	100	1198	1042	36	22	20	6	1121	1118	90	10	80	12	106	+0.5	0.1	120	167	318
	011.30.1180	1338		1068	79	1248	1112	36	22	20	6	1181	1178	63	9	70	10	131	+0.5	0.1	88	129	238
	011.25.1250	1408		1143	79	1313	1187	36	22	20	6	1251	1249	54	9	70	10	138	+0.5	0.1	88	135	232
	011.35.1250	1430	1370	1126	90	1324	1176	32	24	22	4	1250	1246	80	10	70	10	142	-0.5	0			317
	012.35.1250	1440	1370	1126	90	1324	1176	32	24	22	4	1250	1246	80	10	70	12	119	-0.5	0			324
	011.40.1250	1450	1390	1108	102	1336	1164	32	26	24	4	1250	1246	90	12	80	10	144	-0.5	0			416
	012.40.1250	1452	1390	1108	102	1336	1164	32	26	24	4	1250	1246	90	12	80	12	120	-0.5	0			412
	011.45.1250	1449.6	1390	1110	110	1337	1163	40	26	24	5	1252	1248	100	10	90	12	118	+0.5	0.1	135	188	438
	012.45.1250	1453.2	1390	1110	110	1337	1163	40	26	24	5	1252	1248	100	10	90	14	101	+0.5	0.1	158	219	438
011.30.1320		1497.6		1208	89	1388	1252	42	22	20	6	1321	1318	63	9	80	12	122	+0.5	0.1	121	176	313
011.35.1400		1584	1520	1276	90	1474	1326	36	24	22	6	1400	1396	80	10	70	12	131	-0.5	0			354
012.35.1400		1596	1520	1276	90	1474	1326	36	24	22	6	1400	1396	80	10	70	14	113	-0.5	0			364
011.40.1400		1608	1540	1258	102	1486	1314	36	26	24	6	1400	1396	90	12	80	12	133	-0.5	0			470
012.40.1400		1610	1540	1258	102	1486	1314	36	26	24	6	1400	1396	90	12	80	14	114	-0.5	0			465
011.40.1400		1593.6		1266	94	1482	1318	36	26	24	6	1401	1398	81	9	85	12	130	+0.5	0.1	128	187	424
011.45.1400		1605.6	1540	1260	110	1487	1313	40	26	24	5	1402	1398	100	10	90	12	131	+0.5	0.1	135	188	501
012.45.1400		1607.2	1540	1260	110	1487	1313	40	26	24	5	1402	1398	100	10	90	14	112	+0.5	0.1	158	219	501
011.30.1500		1677.6		1388	89	1568	1432	48	22	20	6	1501	1498	63	9	80	12	137	+0.5	0.1	121	176	355
011.40.1600		1803.2		1466	94	1682	1518	40	26	24	8	1601	1598	81	9	85	14	126	+0.5	0.1	149	218	503
011.40.1600		1812	1740	1458	102	1686	1514	40	26	24	5	1600	1596	90	12	80	12	150	-0.5	0			554
012.40.1600		1820	1740	1458	102	1686	1514	40	26	24	5	1600	1596	90	12	80	14	129	-0.5	0			561
011.45.1600		1817.2	1740	1460	110	1687	1513	45	26	24	5	1602	1598	100	10	90	14	127	+0.5	0.1	158	219	584
012.45.1600		1820.8	1740	1460	110	1687	1513	45	26	24	5	1602	1598	100	10	90	16	111	+0.5	0.1	181	250	584
011.50.1600		1824	1762	1434	124	1704	1496	40	30	27	5	1600	1595	112	12	100	12	151	-0.5	0			750
012.50.1600		1834	1762	1434	124	1704	1496	40	30	27	5	1600	1595	112	12	100	14	130	-0.5	0			763
011.40.1800		1999.2		1666	94	1882	1718	44	26	24	11	1801	1798	81	9	85	14	140	+0.5	0.1	149	218	558
011.40.1800		2016	1940	1658	102	1886	1714	44	26	24	4	1800	1796	90	12	80	14	143	-0.5	0			612
012.40.1800		2032	1940	1658	102	1886	1714	44	26	24	4	1800	1796	90	12	80	16	126	-0.5	0			637
011.45.1800		2013.2	1940	1660	110	1887	1713	45	26	24	5	1802	1798	100	10	90	14	141	+0.5	0.1	158	219	652
012.45.1800		2012.8	1940	1660	110	1887	1713	45	26	24	5	1802	1798	100	10	90	16	123	+0.5	0.1	181	250	639
011.50.1800		2044	1964	1634	124	1904	1696	44	30	27	4	1800	1795	112	12	100	14	145	-0.5	0			887
012.50.1800		2048	1964	1634	124	1904	1696	44	30	27	4	1800	1795	112	12	100	16	127	-0.5	0			885
011.50.1900		2139.2	2139.2	1729	109	2005	1795	36	33	30	9	1902	1898	99	9	100	14	150	+0.5	0.1		257	861
011.60.2000		2268.8	2178	1825	144	2110	1891	48	33	30	8	2002	1998	132	12	120	16	139	+0.5	0.1	241	333	1202
012.60.2000		2264.4	2178	1825	144	2110	1891	48	33	30	8	2002	1998	132	12	120	18	123	+0.5	0.1	271	375	1169
011.50.2130		2380.8	2380.8	1959	109	2235	2025	48	33	30	8	2132	2128	99	9	100	16	146	+0.5	0.1		294	978
011.60.2240		2492.8	2418	2065	144	2350	2131	48	33	30	8	2242	2238	132	12	120	16	153	+0.5	0.1	241	333	1294
012.60.2240		2498.4	2418	2065	144	2350	2131	48	33	30	8	2242	2238	132	12	120	18	136	+0.5	0.1	271	375	1294
011.50.2355		2604.8	2604.8	2184	109	2460	2250	54	33	30	9	2357	2353	99	9	100	16	160	+0.5	0.1		294	1075
011.60.2500		2768.4	2678	2325	144	2610	2391	56	33	30	8	2502	2498	132	12	120	18	151	+0.5	0.1	271	375	1509
012.60.2500		2776	2678	2325	144	2610	2391	56	33	30	8	2502	2498	132	12		20	136	+0.5	0.1	301	418	1509
011.50.2645		2892.8	2892.8	2474	109	2750	2540	60	33	30	12	2647	2643	99	9	100	16	178	+0.5	0.1		294	1199
011.60.2800		3074.4	2978	2625	144	2910	2691	56	33	30	8	2802	2798	132	12	120	18	168	+0.5	0.1	271	375	1696
012.60.2800		3076	2978	2625	144	2910	2691	56	33	30	8	2802	2798	132	12	120	20	151	+0.5	0.1	301	418	1696
011.75.3150		3476	3376	2922	174	3286	3014	56	45	42	8	3152	3147	162	12	150	20	171	+0.5	0.1	377	522	2873
012.75.3150		3471.6	3376	2922	174	3286	3014	56	45	42	8	3152	3147	162	12	150	22	155	+0.5	0.1	415	574	2873

The single row of steel balls operates between the raceways of the inner and outer rings, allowing the bearing to simultaneously bear axial, radial loads, and tilting moments, ensuring smooth operation. With the steel balls arranged in a single row, the structure is relatively simple, making the bearing lightweight, easy to install, and space-saving. The cage or spacers help maintain the distance between the balls, reducing wear and extending the bearing’s lifespan. The sealing device prevents dust from entering and retains lubrication, further prolonging service life.

These structural features make single-row ball slewing bearings suitable for applications where high load-bearing capacity is required but installation space is limited, such as cranes, excavators, and wind turbines.

Frequently Asked Questions

Expert Insights and Reliable Solutions to Your Most Common Questions.

1. What types of slewing bearings does ZZ Slewing Bearing provide?

ZZ Slewing Bearing supplies a full range of slewing bearings to meet different industrial needs:

Single row four point contact slewing bearings Application: medium loads, precise rotation.
Double row ball bearings Application: higher radial and axial loads.
Cross roller bearings –Application: high rigidity, suitable for robots and machining centers.
Three row roller bearings – Application: extreme loads in heavy equipment.
Ball combine roller bearings –Application: precise rotational adjustment applications.
Customized bearings – tailored for specific equipment requirements.

2. How do I choose the right bearing for my application?

Typical selection parameter for ZZ clients:

Load type: axial, radial, and tilting moment.

Rotation RPM: ensures long service life.

Installation space & mounting dimensions: inner/outer ring diameter, bolt circle.

Precision & rigidity requirements: critical for cranes, excavators, and robots.

ZZ engineers provide professional selection guidance according to your equipment and drawings.

3. What materials does ZZ Slewing Bearing use for slewing bearings?

ZZ Slewing Bearing selects materials for strength, wear resistance, and long-term durability:

Slewing ring: 42CrMo, 50Mn, C45N, 40CrNiMo, C48E.

Special forging spare parts: carburized/hardened steels for gear teeth (20CrMnTi, 18CrNiMo7‑6).

Corrosion resistant: SS 304, 316L, duplex stainless steel.

Surface treatments: heat treatment, quenching, carburizing, induction hardening, and surface coating(Four-Layer Packing, Strong Anti-Rust Oil, Black Oxide Treatment, Jet Black Paint Finish, Hot-Dip Galvanizing (CGL), Electro-Galvanizing (EGL), Hot-Dip Galvanizing + Paint Finish)

4. How can ZZ Slewing Bearing achieve maximum service life?

Correct installation with flat surfaces.

Proper lubrication using grease.

Avoid overloading or shock loads over capacity.

Monitor operating conditions regularly to prevent debris entry.

5. What causes abnormal noise or vibration in bearings?

Typical factors observed by ZZ engineers: