Engineering solutions
Only if any single element provides optimal performance parameters can a rotary table system be tailored to customer's requirements. The MRT series size 1000 and larger offers a huge variety of table tops. In that series, the tables can be equipped with worm gear, spur gear with double pinion or electronically pre-loaded, as needed. All design types feature a hydraulic locking system. The measuring systems are fitted directly on the table axis for all sizes.
The MRT features a high tilt stiffness and an excellent running smoothness. The mounting options – hydrostatic or antifriction – provide an excellent machining quality of the component, in positioning and continuous operation. The tables may also include temperature control to ensure machining quality even if they run at high ambient temperature. As optional feature, the tables can also be equipped with a Hirth serration which helps compensate extremely high machining forces. Most of the tables can, of course, also be designed as horizontal axis.
Requirements
Customer requirements essentially determine the characteristic features of a product - this is the motto on which the Rückle group acts. For MRT series from size 1000 and larger we concentrate on satisfying customer's demand for several table tops within one construction size, a rigid mounting to bear component weights as high as 200 t and tilting moments up to 300 kNm.
The drive is required to be reliable and backlash-free to obtain an excellent control performance in positioning and continuous operation. The same applies to high accelerations, even during changes of direction, to enhance machining quality on heavy components. The locking system shall withstand machining moments as high as 200 kNm; positioning accuracy must be less than +/- 2 arcsec and repeatability less than +/- 1 arcsec.
A center bore for oil manifolds shall transfer the media to the clamping fixture and a flexibly designed housing shall allow the rotary table be accommodated directly in the machine, when necessary; always keeping in mind that accuracies like a lateral runout of 20 μm through ø 2,500 mm and a circular runout of 5 µm through ø 100 mm must be met.
Pictures
- MRT 1000 2xs (ø 1,600 mm, load capacity 15 t)
- MRT 1600 (ø 2.000 mm, 15 t)
- MRT 2000 with LA 2000 (3,000 × 3,000 mm, 100 t, W=2,000 mm)
Fact sheet MRT
MRT 1000
| Table sizes | mm | 1,400 | 1,600 | 1,800 |
| Load capacity, vertical rotation axis | kg | 25,000 | 30,000 |
| Load capacity, horizontal rotation axis 1 | kg | 10,000 | — |
Mounting features |
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| Bearing diameter | mm | 1,000 |
| Safe max, tilting Torque up to | Nm | 70,000 | 80,000 |
Drive gear 2 |
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| Max. speed S6 up to | RPM | 9 |
| Max. torque S6 up to | Nm | 18,000 |
Locking system |
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| Tangential Torque up to | Nm | 35,000 |
Accuracy |
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| Dividing accuracy 3 | arcsec | +/- 2 |
| Lateral runout | mm | 0,015 |
| Truth of running 4 | mm | 0,01 |
MRT 1250
| Table sizes | mm | 1,600 | 2,000 | 2,500 |
| Load capacity, vertical rotation axis | kg | 35,000 | 45,000 |
| Load capacity, horizontal rotation axis 1 | kg | 15,000 | — |
Mounting features |
||
| Bearing diameter | mm | 1,250 |
| Safe max, tilting Torque up to | Nm | 160,000 | 180,000 |
Drive gear 2 |
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| Max. speed S6 up to | RPM | 8 |
| Max. torque S6 up to | Nm | 23,000 |
Locking system |
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| Tangential Torque up to | Nm | 40,000 |
Accuracy |
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| Dividing accuracy 3 | arcsec | +/- 2 |
| Lateral runout | mm | 0,02 |
| Truth of running 4 | mm | 0,01 |
MRT 1600
| Table sizes | mm | 2,000 | 2,500 | 3,000 |
| Load capacity, vertical rotation axis | kg | 60,000 | 70,000 |
| Load capacity, horizontal rotation axis 1 | kg | 30,000 | — |
Mounting features |
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| Bearing diameter | mm | 1,600 |
| Safe max, tilting Torque up to | Nm | 220,000 | 240,000 |
Drive gear 2 |
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| Max. speed S6 up to | RPM | 6 |
| Max. torque S6 up to | Nm | 28,000 |
Locking system |
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| Tangential Torque up to | Nm | 60,000 |
Accuracy |
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| Dividing accuracy 3 | arcsec | +/- 2 |
| Lateral runout | mm | 0,025 |
| Truth of running 4 | mm | 0,01 |
MRT 2000
| Table sizes | mm | 2,500 | 3,000 | 3,500 |
| Load capacity, vertical rotation axis | kg | 100,000 | 120,000 |
| Load capacity, horizontal rotation axis 1 | kg | — | — |
Mounting features |
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| Bearing diameter | mm | 2,000 |
| Safe max, tilting Torque up to | Nm | 280,000 | 310,000 |
Drive gear 2 |
||
| Max. speed S6 up to | RPM | 5 |
| Max. torque S6 up to | Nm | 35,000 |
Locking system |
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| Tangential Torque up to | Nm | 90,000 |
Accuracy |
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| Dividing accuracy 3 | arcsec | +/- 2 |
| Lateral runout | mm | 0,035 |
| Truth of running 4 | mm | 0,01 |
MRT 2500
| Table sizes | mm | 3,000 | 3,500 | 4,000 |
| Load capacity, vertical rotation axis | kg | 150,000 | 180,000 |
| Load capacity, horizontal rotation axis 1 | kg | — | — |
Mounting features |
||
| Bearing diameter | mm | 2,600 |
| Safe max, tilting Torque up to | Nm | 350,000 | 400,000 |
Drive gear 2 |
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| Max. speed S6 up to | RPM | 4 |
| Max. torque S6 up to | Nm | 40,000 |
Locking system |
||
| Tangential Torque up to | Nm | 120,000 |
Accuracy |
||
| Dividing accuracy 3 | arcsec | +/- 2 |
| Lateral runout | mm | 0,05 |
| Truth of running 4 | mm | 0,01 |
MRT 3200
| Table sizes | mm | 3,500 | 4,000 | 4,500 |
| Load capacity, vertical rotation axis | kg | 220,000 | 260,000 |
| Load capacity, horizontal rotation axis 1 | kg | — | — |
Mounting features |
||
| Bearing diameter | mm | 3,200 |
| Safe max, tilting Torque up to | Nm | 420,000 | 480,000 |
Drive gear 2 |
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| Max. speed S6 up to | RPM | 1,5 |
| Max. torque S6 up to | Nm | 60,000 |
Locking system |
||
| Tangential Torque up to | Nm | 150,000 |
Accuracy |
||
| Dividing accuracy 3 | arcsec | +/- 2 |
| Lateral runout | mm | 0,06 |
| Truth of running4 | mm | 0,01 |
Linear axes
Rückle's linear axes suit for all rotary tables of the MRT and TRT series. The LM guides are available in different travels. Always tailored to the table's actual bearing diameter, the distance between the guides grant high stiffness of the complete system. The axes also feature generously dimensioned drive systems.
Fact sheet LA
LA 1000
| Travel | mm | 1,000 | 1,500 | 2,000 | 2,500 |
Mounting features |
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| Number of LM guides | Stk, | 2 |
| Size of LM guides / LM blocks | 55 | |
Gearing/ball screw and nut assembly drive 2 |
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| Speed | m/min | 20 |
| Feed force | N | 25,000 |
Accuracy |
||
| Position uncertainty P | µm | 7 |
| Position deviation Pa | µm | 5 |
LA 1250
| Travel | mm | 1,000 | 1,500 | 2,000 | 2,500 |
Mounting features |
||
| Number of LM guides | Stk, | 2 |
| Size of LM guides / LM blocks | 65 | |
Gearing/ball screw and nut assembly drive 2 |
||
| Speed | m/min | 20 |
| Feed force | N | 25,000 |
Accuracy |
||
| Position uncertainty P | µm | 7 |
| Position deviation Pa | µm | 5 |
LA 1600
| Travel | mm | 1,000 | 1,500 | 2,000 | 2,500 |
Mounting features |
||
| Number of LM guides | Stk, | 3 |
| Size of LM guides / LM blocks | 65 | |
Gearing/ball screw and nut assembly drive 2 |
||
| Speed | m/min | 20 |
| Feed force | N | 25,000 |
Accuracy |
||
| Position uncertainty P | µm | 7 |
| Position deviation Pa | µm | 5 |
LA 2000
| Travel | mm | 1,000 | 1,500 | 2,000 | 2,500 |
Mounting features |
||
| Number of LM guides | Stk, | 4 |
| Size of LM guides / LM blocks | 65 | |
Gearing/ball screw and nut assembly drive 2 |
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| Speed | m/min | 15 |
| Feed force | N | 25,000 |
Accuracy |
||
| Position uncertainty P | µm | 7 |
| Position deviation Pa | µm | 5 |
LA 2500
| Travel | mm | 1,000 | 1,500 | 2,000 | 2,500 |
Mounting features |
||
| Number of LM guides | Stk, | 4 |
| Size of LM guides / LM blocks | 65 | |
Gearing/ball screw and nut assembly drive 2 |
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| Speed | m/min | 12 |
| Feed force | N | 25,000 |
Accuracy |
||
| Position uncertainty P | µm | 7 |
| Position deviation Pa | µm | 5 |
LA 3200
| Travel | mm | 1,000 | 1,500 | 2,000 | 2,500 |
Mounting features |
||
| Number of LM guides | Stk, | 4 |
| Size of LM guides / LM blocks | 65 | |
Gearing/ball screw and nut assembly drive 2 |
||
| Speed | m/min | 10 |
| Feed force | N | 25,000 |
Accuracy |
||
| Position uncertainty P | µm | 7 |
| Position deviation Pa | µm | 5 |
Notes
By mounting
• roller bearing
• Hydrostatic bearing
• the same value for both mounting systems
1 Load capacity without counter-bearing
2 Drive data are not associated one with another; they will be customized according to the application.
3 Depending on the measuring system
4 Hub centering
Further information and customized modifications on request.
Technical data are subject to change.
