Product Details

Four point contact ball slewing bearing

The single-row four point contact ball slewing ring is composed of 2 seat-rings.It features compact in design,and light in weight.The balls contact with the circular race at four points,via which the axial force,radial force and resultant moment may be born simultaneously.
It may be used for slewing conveyers,welding arm and positioner,light,medium duty cranes,excavators and other engineering machines.

Materials of rings and rolling parts
Generally, NTL use carbon-chromium bearing steel GCr15SiMn or GCr15 for rolling parts and surface-haredned steel 50Mn, 42CrMo, 5CrMnMo for the rings.

Material of cages
The cages for NTL slewing bearings include integral cage, segment cage and spacer-type cage. We use 20# steel or ZL102 birmasil for integral and segment cages, PA 1010 resin or ZL102 birmasil or QA110-3-105 albronze for spacer-type cages. In recent years with continuous development of material industry , nylon GRPA55.25 started to be applied for segment cages.

Material of seals
Generally, NTL use NBR or VITON for seals. But there still very few slewing bearings NTL manufactured in early period sealing with felted wool.

	Basic type			Configuration size			Mounting				Structural size					Gear Data			Ext Gear		Int Gear		Tangential Tooth lood		Weight (kg)
	Toothless D_L mm	Ext Toothing D_L mm	Int Toothing D_L mm	D mm	d mm	H mm	D₁ mm	D₂ mm	n	¦µ mm	n1	D₃ mm	d₁ mm	H₁ mm	h	b mm	x	m mm	D_e mm	Z	D_e mm	Z	Norm -aliz -ing Z 10⁴ N	temp -eri -ng T 10⁴ N
1	010.20.200	011.20.200	_	280	120	60	248	152	12	16	2	201	199	50	10	40	0	3	300	98	_	_	_	_	_
2	010.20.224	011.20.224	_	304	144	60	272	176	12	16	2	225	223	50	10	40	0	3	312	105	_	_	_	_	_
3	010.20.250	011.20.250	_	330	170	60	298	202	18	16	2	251	249	50	10	40	0	4	352	86	_	_	_	_	_
4	010.20.280	011.20.280	_	360	200	60	328	232	18	16	2	281	279	50	10	40	0	4	384	94	_	_	_	_	_
5	010.25.315	011.25.315	013.25.315	408	222	70	372	258	20	18	2	316	314	60	10	50	0	5	435	85	190	40	_	_	_
6	010.25.355	011.25.355	013.25.355	448	262	70	412	298	20	18	2	356	354	60	10	50	0	5	475	93	235	49	_	_	_
7	010.25.400	011.25.400	013.25.400	493	307	70	457	343	24	18	2	401	399	60	10	50	0	6	528	86	276	48	_	_	_
8	010.25.450	011.25.450	013.25.450	543	357	70	507	393	24	18	2	451	449	100	10	50	0	6	576	94	324	56	_	_	_
9	010.30.500	011.30.500	013.30.500	602	398	80	566	434	20	18	4	501	498	70	10	60	+0.5	5	629	123	367	74	3.7	5.2	85
		012.30.500	014.30.500															6	628.8	102	368.4	62	4.5	6.2
9'	010.25.500	011.25.500	013.25.500	602	398	80	566	434	20	18	4	501	499	70	10	60	+0.5	5	629	123	367	74	3.7	5.2	85
		012.25.500	014.25.500															6	628.8	102	368.4	62	4.5	6.2
10	010.30.560	011.30.560	013.30.560	662	458	80	626	494	20	18	4	561	558	70	10	60	+0.5	5	689	135	427	86	3.7	5.2	95
		012.30.560	014.30.560															6	688.8	112	428.4	72	4.5	6.2
10'	010.25.560	011.25.560	013.25.560	662	458	80	626	494	20	18	4	561	559	70	10	60	+0.5	5	689	135	427	86	3.7	5.2	95
		012.25.560	014.25.560															6	688.8	112	428.4	72	4.5	6.2
11	010.30.630	011.30.630	013.30.630	732	528	80	696	564	24	18	4	631	628	70	10	60	+0.5	6	772.8	126	494 .4	83	4.5	6.2	110
		012.30.630	014.30.630															8	774 .4	94	491 .2	62	6.0	8.3
11'	010.25.630	011.25.630	013.25.630	732	528	80	696	564	24	18	4	631	629	70	10	60	+0.5	6	772 .8	126	494 .4	83	4.5	6.2	110
		012.25.630	014.25.630															8	774 .4	94	491 .2	62	6.0	8.3
12	010.30.710	011.30.710	013.30.710	812	608	80	776	644	24	18	4	711	708	70	10	60	+0.5	6	850 .8	139	572 .4	96	4.5	6.2	120
		012.30.710	014.30.710															8	854 .4	104	571 .2	72	6.0	8.3
12'	010.25.710	011.25.710	013.25.710	812	608	80	776	644	24	18	4	711	709	70	10	60	+0.5	6	850 .8	139	572 .4	96	4.5	6.2	120
		012.25.710	014.25.710															8	854 .4	104	571 .2	72	6.0	8.9
13	010.40.800	011.40.800	013.40.800	922	678	100	878	722	30	22	6	801	798	90	10	80	+0.5	8	966 .4	118	635 .2	80	8.0	11. 1	220
		012.40.800	014.40.800															10	968	94	634	64	10. 0	14. 0
13'	010.30.800	011.30.800	013.30.800	922	678	100	878	722	30	22	6	801	798	90	10	80	+0.5	8	966 .4	118	635 .2	80	8.0	11. 1	220
		012.30.800	014.30.800															10	968	94	634	64	10.0	14. 0
14	010.40.900	011.40.900	013.40.900	1022	778	100	978	822	30	22	6	901	898	90	10	80	+0.5	8	1062.4	130	739.2	93	8.0	11. 1	240
		012.40.900	014.40.900															10	1068	104	734	74	10.0	14. 0
14'	010.30.900	011.30.900	013.30.900	1022	778	100	978	822	30	22	6	901	898	90	10	80	+0.5	8	1062.4	130	739.2	93	8.0	11.1	240
		012.30.900	014.30.900															10	1068	104	734	74	10.0	14.0
15	010.40.1000	011.40.1000	013.40.1000	1122	878	100	1078	922	36	22	6	1001	998	90	10	80	+0.5	10	1188	116	824	83	10.0	14.0	270
		012.40.1000	014.40.1000															12	1185.6	96	820.8	69	12.0	16.7