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YRT Rotary Table Bearings

YRT Rotary Table Bearings

Features:

YRT precision rotary table bearing is a kind of bearing fixed by a bidirectional thrust bearing and a centripetal-guided bearing. They can support radial loads, axial loads from both directions and tilting moments free from clearance and are particularly suitable for bearing arrangements with high requirements for running accuracy，like rotary tables, millings heads and reversible clamps.Due to the fixing holes in the bearing rings, the units are very easy to fit.
The bearings are radially and axially preloaded after fitting.

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Product Parameter

Standard YRT Rotary Table Bearings

Standard YRT Rotary Table Bearings

Bearing Type Dimension The fixing holes
d D H H1 H2 C d1 dn dm Inner ring  Outer ring
Unit：mm do ds Ts QTY dL  QTY
mm mm
YRT50 50 126 30 20 10 10 105 63 116 5.6 9 4.2 10 5.6 12
YRT80 80 146 35 23.35 11.65 12 130 92 138 5.6 10 4.2 10 4.6 12
YRT100 100 185 38 25 13 12 160 112 170 5.6 10 5.4 16 5.6 15
YRT120 120 210 40 26 14 12 184 135 195 7 11 6.2 22 7 21
YRT150 150 240 40 26 14 12 214 165 225 7 11 6.2 34 7 33
YRT180 180 280 43 29 14 15 244 194 260 7 11 6.2 46 7 45
YRT200 200 300 45 30 15 15 274 215 285 7 11 6.2 46 7 45
YRT260 260 385 55 36.5 18.5 18 345 280 365 9.3 15 8.2 34 9.3 33
YRT325 325 450 60 40 20 20 415 342 430 9.3 15 8.2 34 9.3 33
YRT395 395 525 65 42.5 22.5 20 486 415 505 9.3 15 8.2 46 9.3 45
YRT460 460 600 70 46 24 22 560 482 580 10 15 8.2 46 10 45
YRT580 580 750 90 60 30 30 700 610 720 11.4 18 11 46 11.4 42
YRT650 650 870 122 78 44 34 800 680 830 14 20 13 45 14 42
YRT850 850 1095 124 80.5 43.5 37 1018 690 1055 18.5 26 17 57 18.5 54
YRT950 950 1200 132 86 46 40 1130 990 1160 18.5 26 17 57 18.5 54
YRT1030 1030 1300 145 92.5 52.5 40 1215 1075 1255 18.5 26 17 66 18.5 66
YRT1200 1200 1490 164 108 56 52 1410 1240 1445 18.5 26 17 66 18.5 66



 Connect screws holes  Limited spped5）  Weight  Type
 Screw connection
QTY		 Pitch  Tightening Basic rated load  Friction moment3)
t torque  Axial  Radial
of screw  Dynamic  Static  Dynamic  Static
MA2） Ca Coa Cr Cor
Grease Lubrication
G Nm kN r/min Nm ≈Kg
QTY QTY Xt
2 — — 12×30° 8.5 38 158 28.5 49.5 600 2.5 1.6 YRT50
2 — — 12×30° 8.5 56 255 42.5 100 530 3 2.4 YRT80
2 M5 3 18×20° 8.5 76.5 415 47.5 120 430 3 4.1 YRT100
2 M8 3 24×15° 14 102 540 52 143 340 7 5.3 YRT120
2 M8 3 36×10° 14 112 630 56 170 320 10 6.2 YRT150
2 M8 3 48×7.5° 14 118 710 69.5 200 280 12 7.7 YRT180
2 M8 3 48×7.5° 14 120 765 81.5 220 260 14 9.7 YRT200
2 M12 3 36×10° 34 160 1060 93 290 200 20 18.3 YRT260
2 M12 3 36×10° 34 275 1930 120 345 170 40 25 YRT325
2 M12 3 48×7.5° 34 300 2280 186 655 140 55 33 YRT395
2 M12 3 48×7.5° 34 355 2800 200 765 120 70 45 YRT460
2 M12 6 48×7.5° 68 490 4250 228 965 80 140 89 YRT580
2 M12 6 48×7.5° 116 1040 8000 490 1800 65 200 170 YRT650
3 M16 6 60×6° 284 1000 8650 455 1730 50 300 253 YRT850
3 M16 6 60×6° 284 1290 11400 530 2040 40 600 312 YRT950
6 M16 6 72×5° 284 1380 12000 620 2650 35 800 375 YRT1030
6 M16 6 72×5° 284 1435 12850 745 2800 25 1000 450 YRT1200

Operating temperature:

YRT bearings are suitable for operating temperatures from 30℃ to 120℃

Design and safety guidelines:

Basic rating life:

Please contact us in relation to checking of the basic rating life .The speed ,load and operating duration must be given.

Static load safety factor:

The static load safety factor S0 indicates the security against impermissible permanent deformations in the bearing. It is determined as follows:

Static load safety factor :Cor Coa N

Basic static load rating according to dimension tables: For Foa N

Maximum static load on the radial or axial bearing.

Caution! In machine tools and similar areas of application, S0 should be ＞4

Limiting speeds:

The bearings allow the limiting speeds given in the dimension tables. The operating temperatures occurring are heavily dependent on the environmental conditions. Calculation is possible by means of a thermal balance analysis based on frictional torque data.

Frictional torque:

The bearing frictional torque MRL is influenced primarily by the viscosity and quantity of the lubricant and the bearing preload.

The lubricant viscosity and quantity are dependent on the lubricant grade and operating temperature. The bearing preload is dependent on the mounting fits, the geometrical accuracy of the adjacent parts, the temperature difference between the inner and outer ring, the screw tightening torque and the mounting situation.

Starting torque:

For YRT bearing, it must be taken into consideration that the frictional torque can increase by a factor of between 2 and 2.5 with increasing speed.