Three-Row Cylindrical Roller Yrt50 Bearings Production Precision Machine Turntable

• Customization: Available
• Rolling Body: Roller Bearings
• The Number of Rows: Multi-column
• Model NO.: YRT50
• Outer Dimension: 126mm
• Material: Bearing Steel
• Spherical: Aligning Bearings
• Load Direction: Axial Bearing
• Separated: Separated
• Craft: Grinding
• Transport Package: in Wooden Box
• Specification: 126*50*30
• Trademark: LYDZC
• Origin: Luoyang China
• Production Capacity: 50000sets/Year

Product Description

Operation manual and model of YRT rotary table bearing:
1. Structural features: YRT50 type bearings can carry multi-directional axial and radial loads. It has a high load capacity. Its tilting stiffness and bearing rotation precision are very high. The bearing comprises a seat ring, a shaft ring, a thrust washer, two needle cage assemblies and a set of centripetal cylindrical rollers.
2. Use with rotary table, chuck and milling cutter head and bearing in measurement and experiment. It is suitable for machine equipment with high accuracy.
3. The bearing shall be equipped with certain professional technical knowledge when mounting, and the tightening torque of mounting screws shall be properly controlled.
4. Bearing characteristics:
1) high accuracy: P4 and P2 accuracy can be achieved;
2) high rigidity: this series of bearings are all equipped with preloading;
3) high load: capable of bearing axial load, radial load and overturning load.
4) high speed: YRTS series bearings can be applied in working places with high speed.

d	50  mm	Tolerance: 0/-0,008
D	126  mm	Tolerance: 0/-0,011
H	30  mm

	10	Number of fixing holes in inner ring Attention! For fixing holes in the adjacent construction. Note the pitch of the bearing holes.
	12	Number of fixing holes in outer ring Attention! For fixing holes in the adjacent construction. Note the pitch of the bearing holes.
	2	Number of retaining screws
C	10  mm
D1 max	105  mm	Diameter of inner ring for design of adjacent construction
d1	5,6  mm	Fixing holes in inner ring
d3	5,6  mm	Fixing holes in outer ring
H1	20  mm
H2	10  mm
J	63  mm	Fixing holes in inner ring
J1	116  mm	Fixing holes in outer ring
t	12 x 30°	Pitch t Including retaining screws and extraction threads Quantity X t

m	1,6  kg	≈ Mass
MA	8,5  Nm	Screw tightening torque Tightening torque for screws to DIN EN ISO 4762, grade 10.9.
Ca	56000  N	Basic dynamic load rating, axial
C0a	280000  N	Basic static load rating, axial
Cr	28500  N	Basic dynamic load rating, radial
C0r	49500  N	Basic static load rating, radial
Cur	7100  N	Fatigue limit load, radial
Cua	29500  N	Fatigue limit load, axial
nG	440  1/min	Limiting speed For high operating durations or continuous operation, please contact us.
MR	2,5  Nm	Bearing frictional torque Measurement speed n const = 5 1/min, bearing temperature +50°C, after grease distribution cycle; frictional torque may increase by 2,5 times up to the limiting speed.
caL	1300  N/µm	Axial rigidity of bearing position Rigidity values taking account of the rolling element set, rigidity of the bearing rings and the screw connections.
crL	1100  N/µm	Radial rigidity of bearing position Rigidity values taking account of the rolling element set, rigidity of the bearing rings and the screw connections.
ckL	1250  Nm/mrad	Tilting rigidity of the bearing position Rigidity values taking account of the rolling element set, rigidity of the bearing rings and the screw connections.
caL	6200  N/µm	Axial rigidity of rolling element set
crL	1500  N/µm	Radial rigidity of rolling element set
ckL	5900  Nm/mrad	Tilting rigidity of rolling element set

 

What is the most likely failure of the YRT50 bearing during use?
1. The bearing clearance increases, the cage is damaged, and the rolling body is worn or the surface will produce pitting.
2. The host will eventually impact response to the bearing in the process of operation and input on the bearing, the ball bearings, cage, I produce severe collision between bearing inner sleeve and a coat, a short period of time the bearing inner sleeve and coat surface pitting will occur and ball and cage, bearing inner sleeve and coat the huge quantity of heat, high speed friction between bearing damage.
3. After a period of operation, the spindle box tends to vibrate greatly, the motor no-load current is abnormal or even the bearing is locked.

The design of shafting structure is of vital importance to the bearing running well. Besides, the working environment of the main engine also plays a key role. The so-called working environment includes the accuracy of the auxiliary equipment of the host, the stationarity of the feed mechanism, the stability of the operation process and so on.



More relevant models, sizes and parameters:

Bearing Type	Dimension									The fixing hole
	d	D	H	H1	H2	C	d1	dn	dm	Inner ring				Outer ring
	:mm Unit:mm									do	ds	Ts	4)QTY4)	dL	4)QTY4)
										mm				mm
YRTS200	200	300	45	30	15	15	274	215	285	7	11	6.2	46	7	45
YRTS260	260	385	55	36.5	18.5	18	345	280	365	9.3	15	8.2	34	9.3	33
YRTS325	325	450	60	40	20	20	415	342	430	9.3	15	8.2	34	9.3	33
YRTS395	395	525	65	42.5	22.5	20	486	415	505	9.3	15	8.2	46	9.3	45
YRTS460	460	600	70	46	24	22	560	482	580	10	15	8.2	46	9.3	45

 

Screw connection QTY	Connect Screw holes		1) Pitch1) t	The tightening torque	Basic rated load				5) Limited speed	Weight	Type
					Axial		Radial
					Dynamic	Static	Dynamic	Static
				MA2)	Ca	Coa	Cr	Cor	Grease lubrication
	G		Xt	Nm	kN				r/min	≈Kg
2	M8	3	48×7.5°	14	105	635	78	202	950	9.7	YRT200
2	M12	3	36×10°	34	131	840	85	275	800	18.3	YRT260
2	M12	3	36×10°	34	191	1260	109	300	680	25	YRT325
2	M12	3	48×7.5°	34	214	1540	121	390	600	33	YRT395
2	M12	3	48×7.5°	34	221	1690	168	570	500	45	YRT460

The failure of YRT50 bearing may occur in the following places:
1. Operating environment:
Machines and equipment, if you want to play at your best. Bearings must be correctly operated to avoid high temperature, humidity and pollution.
2. Correct installation:
Correct installation of technical and knowledge and correct tools to ensure that INA bearings are not harmed.
3. Correct maintenance:
Proper lubrication and maintenance planning and bearing monitoring will give the maximum bearing life.
4. Correct operation:
The correct service bearing and proper maintenance goal is to minimize the risk of the bearing stopping and to ensure that the Paul bearing reaches all its potential. LYDZC's existing full products and services help you easily install and maintain bearings.


Learn more about our company:
Since its establishment, the company has always adhered to the excellent pre-sales technical support, excellent product quality and excellent after-sales tracking service to every customer. 80% of LYDZC products are sold to Europe, America, Middle East, southeast Asia and other countries and regions. LYDZC products are exported to the United States, the United Kingdom, Canada, Germany, Austria, Italy, Canada, Japan, Korea, Singapore, India, Pakistan, Thailand, Malaysia and other countries to help each customer successfully achieve the goal and create brilliant performance. As stated in the company's "quality standards", LYDZC focuses on total quality management and regards this as a lasting work to improve customer satisfaction. Emphasize that this goal also requires the company team to implement full staff training including senior management and continue education. At the same time, the necessary means of whole-process evaluation are established to ensure the smooth progress of total quality management in this field. LYDZC bearings gradually form a stable sales network.