Integrated Angle Measurement System for YRTM Rotary Table Bearings

YRTM rotary table bearings with integral measuring system

YRTM is a bidirectional thrust cylindrical roller YRT combination bearing with a steel scale, which can monitor and adjust the rotation accuracy of the bidirectional thrust cylindrical roller combination bearing in real time to ensure high-precision operation of the machine. Based on the YRT standard series, an angle measurement system is integrated to achieve accurate angle measurement with a maximum accuracy of 1 arc second, which is very suitable for applications with high requirements for angle positioning accuracy.

Product Details

Bearing Model	Bearing Size												Number of Fixing Holes
	Bearing Size												Inner Ring				Outer Ring
	d	D	H	H1	H2	C	D1	D2	dn	dm	F	L	d1	d2	a	qty	d3	qty
	Unit： mm												mm				mm
YRTM150	150	240	43	29	14	12	214	214	165	225	165	225	7	11	6.2	34	7	33
YRTM180	180	280	46	32	14	15	244.5	244	194	260	194	260	7	11	6.2	46	7	45
YRTM200	200	300	47	32	15	15	271.2	274	215	285	215	285	7	11	6.2	46	7	45
YRTM260	260	385	55	36.5	18.5	18	343.8	345	280	365	280	365	9.3	15	8.2	34	9.3	33
YRTM325	325	450	60	40	20	20	412.6	415	342	430	342	430	9.3	15	8.2	34	9.3	33
YRTM395	395	525	65	42.5	22.5	20	485.5	486	415	505	415	505	9.3	15	8.2	46	9.3	45
YRTM460	460	600	70	46	24	22	557.7	560	482	580	482	580	9.3	15	8.2	46	9.3	45

Bearing Model	Number of Withdrawal Threads		Angle t×Number	Screw Tightening Torque MA	Rated Load				Weight
					Axial		Radial
					Dynamic Load Ca	Static Load Coa	Dynamic Load Ca	Static Load Coa
	G		Qty×t	Ｎｍ	KN				Kg
	G	qty	Qty	Ｎｍ	KN				Kg
YRTM150	M8	3	36×10°	14	112	630	56	170	6.2
YRTM180	M8	3	48×7.5°	14	118	710	69.5	200	7.7
YRTM200	M8	3	48×7.5°	14	120	765	81.5	220	9.7
YRTM260	M12	3	36×10°	34	160	1060	93	290	18.3
YRTM325	M12	3	36×10°	34	275	1930	120	345	25
YRTM395	M12	3	48×7.5°	34	300	2280	186	655	33
YRTM460	M12	3	48×7.5°	34	355	2800	200	765	45

YRTM is a bidirectional thrust cylindrical roller YRT combination bearing with a steel scale installed, which can monitor and adjust the rotation accuracy of the bidirectional thrust cylindrical roller combination bearing in real time to ensure the high-precision operation of the machine. The measurement of angular displacement of turntable bearings with integrated angle measurement system plays a very important role in modern industrial processing, especially in the machine tool industry, which often has high requirements for the rotation angle of the workpiece, which requires accurate measurement and control of angular displacement.

Currently, the more commonly used methods for measuring angular displacement are grating encoders, magnetic grating encoders, etc., which have the advantages of high accuracy (maximum angular resolution is less than or equal to 2 arc seconds), pollution resistance, no electromagnetic influence, and strong environmental adaptability. At the same time, because it is installed on the YRT turntable bearing, the combined bearing has extremely high rotation accuracy and can withstand axial load, radial load and overturning moment at the same time. It is very suitable for high-precision CNC turntables, dividing heads, scientific research experiments and measurements in the machine tool industry. Real-time output signal is an ideal solution for direct drive. The entire steel scale system consists of three parts: steel scale, reading head, and electronic evaluator. The steel scale is a closed steel ring with evenly distributed grids installed on the inner ring of the bearing. The reading head is installed on the outer ring of the bearing, close to the steel scale but not in contact, with a gap of 0.1~0.2 between them.

When the bearing rotates during operation, the steel scale and the reading head make non-contact relative motion, and the data collected by induction are transmitted to the electronic evaluator via a cable. The electronic evaluator then converts the data into square wave or sine wave signals. These signals are input into the CNC system of the machine tool to achieve the measurement and control of angular displacement.

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.

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