XZWD Slewing Bearing Single Row Four Point Contact Ball Slewing Bearing (Q) Internal Gear

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Product Description

A slewing bearing or slew[ing] ring is a rotationalrolling-element bearing or plain bearing that typically supports a heavy but slow-turning or slow-oscillating load, often a horizontal platform such as a conventional crane, a swing yarder, or the wind-facing platform of a horizontal-axis windmill. (To "slew" means to turn without change of place.)

Compared to other rolling-element bearings, slewing bearings are thin in section and are often made in diameters of a metre or more; the slewing bearings on the Falkirk Wheel are 4 metres diameter and fit over a 3.5 metre axle. Slewing bearings resemble oversize aircraft control surface bearings.

Slewing bearings often use two rows of rolling elements. They often use three race elements, such as an inner ring and two outer ring "halves" that clamp together axially.

Slewing bearings are often made with gear teeth integral with the inner or outer race, used to drive the platform relative to the base.

NO	Model				Mounting dimensions (mm)						Structural dimension (mm)		Gear data
		Internal gear		H	Du	Dn	n	Through hole A	Threaded hole B/C/D		n1Oil cup qty	h	B	m	x=+0.5
															de	Gear qty z	Weight
		D	d					φ	d1	T
								mm				mm		mm	mm		kg
1	QN.315.20	408	224	60	370	260	10	17	M16	24	2	10	40	3	207	70	34
	QNA.315.20A													4	200	51	35
2	QN.355.20	448	264	60	410	300	10	17	M16	24	2	10	40	3	246	84	39
	QNA.355.20A													4	240	61	40
3	QN.400.20	493	310	60	455	345	12	17	M16	24	2	10	40	4	288	73	44
	QNA.400.20A													5	280	57	46
4	QN.450.20	543	360	60	505	395	12	17	M16	24	2	10	40	4	336	85	50
	QNA.450.20A													5	330	67	52
5	QN.500.20	593	410	60	555	445	14	17	M16	24	2	10	40	5	385	78	55
	QNA.500.20A													6	378	64	57
6	QN.560.20	656	468	70	618	502	14	17	M16	30	2	10	50	4	440	111	76
	QNA.560.20A													5	435	88	77
7	QN.630.20	726	538	70	688	572	16	17	M16	30	2	10	50	4	512	129	84
	QNA.630.20A													5	505	102	86
8	QN.710.20	806	618	70	768	652	18	17	M16	30	2	10	50	5	585	118	97
	QNA.710.20A													6	582	98	97
9	QN.800.20	896	708	70	858	742	20	17	M16	30	2	10	50	6	672	113	110
	QNA.800.20A													8	664	84	111
10	QN.800.25	908	694	78	864	736	18	22	M20	36	2	10	58	6	654	110	142
	QNA.800.25A													8	648	82	142
11	QN.900.25	1008	794	78	964	836	20	22	M20	36	2	10	58	8	744	94	163
	QNA.900.25A													10	740	75	162
12	QN.1000.25	1108	894	78	1064	936	24	22	M20	36	2	10	58	8	848	107	178
	QN.1000.25A													10	840	85	179
13	QN.1000.32	1124	880	90	1074	926	24	24	M22	40	2	10	70	8	832	105	230
	QNA.1000.32A													10	830	84	227
14	QN.1120.32	1244	1000	90	1194	1046	28	24	M22	40	4	10	70	10	940	95	263
	QNA.1120.32A													12	936	79	262
15	QN.1250.32	1374	1130	90	1324	1176	32	24	M22	40	4	10	70	10	1070	108	294
	QN.1250.32A													12	1068	90	290
16	QN.1400.32	1524	1280	90	1474	1326	36	24	M22	40	4	10	70	12	1212	102	333
	QN.1400.32A													14	1204	87	336
17	QN.1250.40	1394	1110	102	1336	1164	32	26	M24	45	4	12	80	10	1050	106	388
	QNA.1250.40A													12	1044	88	388
18	QN.1400.40	1544	1260	102	1486	1314	36	26	M24	45	4	12	80	12	1188	100	444
	QNA.1400.40A													14	1190	86	434
19	QN.1600.40	1744	1460	102	1686	1514	40	26	M24	45	4	12	80	12	1392	117	509
	QN.1600.40A													14	1386	100	511
20	QN.1800.40	1944	1660	102	1886	1714	44	26	M24	45	4	12	80	14	1582	114	576
	QN.1800.40A													16	1568	99	591
21	QN.1600.50	1766	1438	124	1704	1496	40	30	M27	50	4	12	100	12	1368	115	714
	QNA.1600.50A													14	1358	98	723
22	QN.1800.50	1966	1638	124	1904	1696	44	30	M27	50	4	12	100	14	1568	113	794
	QNA.1800.50A													16	1552	98	818
23	QN.2000.50	2166	1842	124	2104	1896	48	30	M27	50	6	12	100	16	1760	111	891
	QN.2000.50A													18	1746	98	913
24	QN.2240.50	2406	2078	124	2344	2136	54	30	M27	50	6	12	100	16	1984	125	1044
	QN.2240.50A													18	1980	111	1041
25	QN.2500.50	2666	2342	124	2604	2396	60	30	M27	50	6	12	100	18	2250	126	1132
	QN.2500.50A													20	2240	113	1148
26	QN.2500.60	2696	2308	150	2626	2374	60	33	M30	56	6	14	122	18	2214	124	1621
	QN.2500.60A													20	2200	111	1654