Whirling solutions for every need
With the whirling process, helical profiles can be processed very efficiently. In this process, an eccentrically positioned whirling ring rotates around the slowly rotating work piece - in most cases without the use of a coolant. This has the advantage that because of the specific way of cutting the majority of the cutting heat is discarded with the chipa rather than heating up the workpiece. Further benefits: The whirling is designed so that optimal results can be achieved with low energy consumption for the machining. In addition, the workpiece surface does not undergo any changes due to compressive stress. It is possible to achieve a very high level of surface quality.
Leistritz provides a large selection of whirling machines for both internal and external whirling.
LWN 65
The outer whirling machine LWN 65 is specially designed for the production of work pieces with large numbers of pieces. The high durability of the tool as well as the short tool change time provide maximum machine availability. The machine can be equipped with an integrated, work piece-specific, automatic loading and unloading device.
Technical data
| Workpiece diameter | 3 - 10 mm |
| Workpiece length | max. 250 mm |
| Machine dimensions (LxWxH) | approx. 1,800 x 1,700 x 2,300 mm |
| Weight | approx. 2,500 kg |
| Capacity | max. 2.8 kW |
LWN 90
The external whirling machine LWN 90 can be used universally and fulfills even the highest demands. The high durability of the tool as well as the short tool change time provide maximum machine availability. The machine can be equipped with an integrated, work piece-specific, automatic loading and unloading device. Together with its high machine rigidity, these are the ideal conditions for economical use in automotive industry.
Technical details
| Workpiece diameter | 10 - 50 mm |
| Workpiece length | 100 - 350 mm |
| Machine dimensions (LxWxH) | approx. 2,600 x 2.250 x 2,300 mm |
| Weight | approx. 4,200 kg |
| Capacity | max. 5.5 kW |
LWN 90 S
The Leistritz Whirling Machine LWN 90 S is equipped with the AWS 90-S external whirling unit for the machining of ball screws with approx. 3 - 28 mm external diam and up to 300 mm screw length.
This machine type is the result of long lasting experience in the field of thread whirling. It has been designed based on the latest technical findings. Furthermore, it has been payed highest attention on production-orientated and ergonomic characteristics, resulting in higher productivity and precision.
Technical details
| Workpiece diameter | 3 - 28 mm |
| Workpiece length | 300 mm |
| Machine dimensions (LxWxH) | approx. 2,600 x 2.250 x 2,300 mm |
| Weight | approx. 4,900 kg |
| Capacity | max. 8 kW |
LWN 100
The LWN 100 whirling machine is able to reliably process EPS screws with a module from 0.8 to 3 and a swivelling angle of up to 42 degrees twice as quickly as other production processes. This is possible for the usual diameter of 14 to 30 mm and a length up to 220 mm.
Technical data
| Workpiece diameter | 14 - 30 mm |
| Workpiece length | max. 220 mm |
| Machine dimensions (LxWxH) | approx. 3,960 x 2,530 x 2,290 mm |
| Weight | approx. 6,000 kg |
| Capacity with AWS 100 | 4.9 kW |
LWN 120
The external whirling machine LWN 120 can be used universally and fulfills even the highest demands. Thanks to a torque motor, the machine is designed for high-speed cutting (up to 10,000 1/min). Together with its high machine rigidity, these are the ideal conditions for economical use in finish hard machining. The wide swiveling angle (±50°) makes it possible to finish almost all thread profiles and screws.
Technical data
| Workpiece diameter | 15 - 50 mm |
| Workpiece length | max. 950 mm |
| Machine dimensions (LxWxH) | approx. 5,400 x 2,980 x 2,220 mm |
| Weight | approx. 12,000 kg |
| Capacity with AWS* I | 8 kW |
| Capacity with AWS* II16 | 16.5 kW |
* External whirling unit
LWN 120 IW
With the internal whirling machine LWN 120 IW, inner profiles can be machined. By using the appropriate tools both hard and soft machining are possible. The rigid machine construction guarantees the highest level of precision.
Technical data
| Workpiece diameter | 25 - 80 mm |
| Workpiece length | max. 750 mm |
| Machine dimensions (LxWxH) | approx. 5,925 x 3,116 x 2,412 mm |
| Weight | approx. 12,000 kg |
| Capacity | 14 kW |
LWN 160 HP
The LWN 160 HP (High Precision) hard whirling machine is ideal for producing lead screws. It is suitable for external machining up to 6,000 mm in length and increases productivity by a factor of 3 compared to modern grinding machines, without compromising machining quality. Very convincing is the fact that the pitch accuracy of five-start threads is only 1 μm, the dimensional accuracy in the cylindricity of the thread diameter is better than 3μm, and the roughness depth Ra achieved in the hard whirling process is less than 0.2 μm.
Technical data
| Workpiece diameter | 10 - 100 mm |
| Workpiece length | Customizable up to 6,000 mm maximum |
| Machine dimensions (LxWxH) | approx. 5,500 x 3,600 x 2,310 mm for machines with 1,000 mm machining length |
| Weight | approx. 8,500 - 15,000 kg depending on the size of the machine |
| Capacity | max. 12 kW |
LWN 180 ES
Perfect Surface within shortest machining time.
The LEISTRITZ whirling machine LWN 180 ES with AWE 190, is designed for the machining of eccentric screws with approx. 25 - 90 mm outer diameter and approx. 1000 mm workpiece length.
This machine type has been developed on the basis of practical, decades-long experience in the field of whirling machines according to the latest technical findings.
Technical data
| Workpiece diameter | 25 - 90 mm |
| Workpiece length | Customizable up to 1,000 mm maximum |
| Machine dimensions (LxWxH) | approx. 6,500 x 3,000 x 2,350 mm |
| Weight | approx. 8,500 |
| Capacity | max. 22 kW |
LWN 300 HP
The whirling machine LWN 300 is designed for complete machining of eccentric screws, pump spindles, plasticizing screws and ball screw spindles. It has a modular design, thereby facilitating extremely flexible and economical finishing. It can be used to machine large ball screw spindles with a diameter of up to 200 mm and lengths according to customer specification.
Technical data
| Workpiece diameter | 40 - 200 mm |
| Workpiece length | Customizable up to 8,000 mm maximum |
| Machine dimensions (LxWxH) | approx. 8,000 x 1,900 x 2,240 mm |
| Weight | approx. 32,000 kg |
| Capacity | max. 26 kW |
Leistritz Produktionstechnik GmbH