YRT Rotary Table Bearings

YRT bearings consist of a thrust/radial seat ring, a thrust/radial shaft ring, a thrust washer, two needle roller cage assemblies and a set of radial cylindrical rollers. The seat ring and shaft ring have evenly distributed mounting screw holes. This type of bearing has high axial and radial load capacity. YRT bearings are usually used to support rotary tables, indexing heads and multi-axis heads of machining centers. MONTON can provide YRT bearings with inner diameters ranging from 50mm to 1030 mm. YRT bearings can withstand radial loads, bidirectional axial loads and moment loads, whether these loads act alone or in any combination. There are evenly distributed mounting holes on the bearings, which can be directly fixed to the bearing enterprise by bolts: the bearings are preloaded when leaving the factory, and there is no need to adjust the clearance during installation; this series of products is suitable for occasions with relatively low speeds, short operating time cycles, and high requirements for alignment and precision.

Product Details

Bearing	Dimensions unit： mm								Number of retaining screws
	d	D	H	H1	C	D1	J	J1
YRT50	50	126	30	20	10	105	63	116	2
YRT80	80	146	35	23.35	12	130	92	138	2
YRT100	100	185	38	25	12	160	112	170	2
YRT120	120	210	40	26	12	184	135	195	2
YRT150	150	240	40	26	12	214	165	225	2
YRT180	180	280	43	29	15	244	194	260	2
YRT200	200	300	45	30	15	274	215	285	2
YRT260	260	385	55	36.5	18	345	280	365	2
YRT325	325	450	60	40	20	415	342	430	2
YRT395	395	525	65	42.5	20	486	415	505	2
YRT460	460	600	70	46	22	560	482	580	2
YRT580	580	750	90	60	30	700	610	720	2
YRT650	650	870	122	78	34	800	680	830	2
YRT850	850	1095	124	80.5	37	1018	890	1055	2
YRT950	950	1200	132	86	40	1130	990	1160	2
YRT1030	1030	1300	145	92.5	40	1215	1075	1255	12
YRT1200	1200	1490	164	108	56	1410	1240	1445	12

Bearing	Extraction thread hole		Number of pitches X angle of pitches	Screw tightening torque	Basic load rating				Limiting speed	Bearing frictional torque	weight
					axial		radial
					dynamic load	static load	dynamic load	static load
				MA2)	Ｃａ	Coa	Cr	Cor	grease
	G	qty	qty×t	Ｎｍ	KN				r/min	Nm	Kg
YRT50	—	—	12×30°	8.5	38	158	28.5	49.5	440	2.5	1.6
YRT80	—	—	12×30°	8.5	56	255	42.5	100	530	3	2.4
YRT100	M5	3	18×20°	8.5	76.5	415	47.5	120	430	3	4.1
YRT120	M8	3	24×15°	14	102	540	52	143	340	7	5.3
YRT150	M8	3	36×10°	14	112	630	56	170	320	10	6.2
YRT180	M8	3	48×7.5°	14	118	710	69.5	200	280	12	7.7
YRT200	M8	3	48×7.5°	14	120	765	81.5	220	260	14	9.7
YRT260	M12	3	36×10°	34	160	1060	93	290	200	20	18.3
YRT325	M12	3	36×10°	34	275	1930	120	345	170	40	25
YRT395	M12	3	48×7.5°	34	300	2280	186	655	140	55	33
YRT460	M12	3	48×7.5°	34	355	2800	200	765	120	70	45
YRT580	M12	6	48×7.5°	68	490	4250	228	965	80	140	89
YRT650	M12	6	48×7.5°	116	1040	8000	490	1800	65	200	170
YRT850	M16	6	60×6°	284	1000	8650	455	1730	50	300	253
YRT950	M16	6	60×6°	284	1290	11400	530	2040	40	600	312
YRT1030	M16	6	72×5°	284	1380	12000	620	2650	35	800	375
YRT1200	M16	6	72×5°	284	1435	12850	745	2800	25	1000	450

Machining tolerances for shafts
Bearings	shaft diameter （mm）			roundness（○）	perpendicularity（⊥）	parallelism（∥）	roughness Ra
	Nominal dimension	upper	lower	t1（µm）	t3（µm）	t4（µm）	Ra（µm）
YRT50	50	0	-0.011	4	3	3	0.4
YRT80	80	0	-0.013	5	3	3	0.4
YRT100	100	0	-0.015	6	4	4	0.4
YRT120	120	0	-0.015	6	4	4	0.4
YRT150	150	0	-0.018	8	5	5	0.8
YRT180	180	0	-0.018	8	5	5	0.8
YRT200	200	0	-0.02	10	7	7	0.8
YRT260	260	0	-0.023	12	8	8	0.8
YRT325	325	0	-0.025	13	9	9	0.8
YRT395	395	0	-0.025	13	9	9	0.8
YRT460	460	0	-0.027	15	10	10	0.8
YRT580	580	0	-0.028	16	11	11	1.6
YRT650	650	0	-0.032	18	12	12	1.6
YRT850	850	0	-0.036	20	14	14	1.6
YRT950	950	0	-0.036	20	14	14	1.6
YRT1030	1030	0	-0.045	25	16	16	1.6
YRT1200	1200	0	-0.054	18	18	18	1.6

Machining tolerances for housings
Bearings	（mm）housing diameter			roundness（○）	perpendicularity（⊥）	parallelism（∥）	roughness Ra
	Nominal dimension	upper	lower	t1（µm）	t3（µm）	t4（µm）	Ra（µm）
YRT50	126	+0.018	-0.007	8	5	5	0.8
YRT80	146	+0.018	-0.007	8	5	5	0.8
YRT100	185	+0.022	-0.007	10	7	7	0.8
YRT120	210	+0.022	-0.007	10	7	7	0.8
YRT150	240	+0.022	-0.007	10	7	7	0.8
YRT180	280	+0.025	-0.007	12	8	8	0.8
YRT200	300	+0.025	-0.007	12	8	8	0.8
YRT260	385	+0.029	-0.007	13	9	9	0.8
YRT325	450	+0.033	-0.007	15	10	10	0.8
YRT395	525	+0.034	-0.01	16	11	11	1.6
YRT460	600	+0.034	-0.01	16	11	11	1.6
YRT580	750	+0.038	-0.012	18	12	12	1.6
YRT650	870	+0.044	-0.012	20	14	14	1.6
YRT850	1095	+0.052	-0.014	24	16	16	1.6
YRT950	1200	+0.052	-0.014	24	16	16	1.6
YRT1030	1300	+0.060	-0.016	27	18	18	1.6
YRT1200	1490	+0.068	-0.02	20	20	18	1.6

YRT turntable bearing is a kind of rotary mechanism with outer ring rotating and inner ring supporting. It is mainly divided into four series: YRT bearings, YRTC bearing, YRTS bearings and YRTM bearings. These four series of bearings have the same installation dimensions, different internal structures and similar performance. YRT series bearings are composed of three rows of rollers. Two rows of axial rollers ensure stable axial load capacity, and one row of radial rollers ensures that the bearing can withstand radial force and overturning moment, which is suitable for axial load-bearing rotary mechanisms. YRT turntable bearings are mainly used in CNC machine tool manufacturing as its core components.
YRT standard series, YRTC series and YRTS high-speed series all have high rotation accuracy and can withstand radial loads, bidirectional axial loads and overturning moments. They are suitable for high-precision and combined load-bearing occasions such as turntables, faceplates, milling heads and reversible fixtures. There are mounting holes on the bearing rings, which are very convenient to install. After installation, axial and radial preloads ensure high precision and high rigidity. MONTON has a complete size series, which can be used for turntables of different sizes. The appearance and installation dimensions of turntable bearings of different series are the same, which is suitable for selecting the appropriate series according to different environmental requirements.
The operating temperature range of YRT, YRTC, YRTS, and ZKLDF series turntable bearings is -30℃ to +120℃.
Our company has professional sales and technical engineers who are responsible for providing users with technical consultation, technical services, and product technical training on precision bearing information and installation and use. Perfect pre-sales, in-sales, and after-sales services constitute a guarantee system for high-quality services, providing users with reliable quality bearing products, and creating a good user experience and rich benefits for every customer.
If you have any questions about products and services, please contact the company's service department directly.