Morara MH 3000 D

Morara MH 3000 D is an external cylindrical grinding machine with moving table and double carriage, specifically designed for grinding railway axles. It is a machine designed for medium-large pieces (swing up to 500 mm) and heavy weights (up to 2,000 kg), and which makes versatility and absolute precision its strengths: it allows to obtain a cylindricity of less than 0.0035 / 1550 mm

Details that make the difference

Cast-iron base

Stabilized and ribbed cast iron base equipped with peripheral channels for coolant circulation. This machine was designed by using advanced techniques of 3D parametric modelling and FEM analysis. Its heavy structure (around 18 tons) provides very high vibration damping.

Workhead

The universal workpiece-holding head from Crossflex is perfect for surface and inter-spindle grinding with fixed and rotating spindles. Manufactured with high-precision bearings, which guarantee a roundness of less than 0.001 mm, the new workhead is on a swivelling base, with a micrometric adjustment device (0°-10°). Progressive speed variation is performed by means of a digitally-controlled AC Brushless motor, while to facilitate the movement during machine set-up, the unit is equipped with a pneumatic lightening device. A C-axis is also available as an option for machining non-round workpieces such as threads, cams, eccentrics and polygons.

Wheelhead

The grinding wheel carriage on high precision bearings and equipped with integrated motor is it is designed for the integrated wheel balancing device. The various configurations of the wheelhead can be effectively used thanks to the freely programmable orientation of the wheel carriage (Axis B) from - 20 ° up to + 200 °

Software Tool Operator Package

Our interactive T.O.P. (Tool Operator Package) grinding software takes the operator step-by-step through the entire machine operation, easily and in compliance with safety regulations. The software makes it easy to manage automatic grinding cycles; roughing, semi-finishing, finishing and quenching during plunge and pendulum cycles. The developed man-machine interface uses a few simple pages with graphic support. The operator can set the operations to be performed for set-up via wizards and for the execution of all available machining operations.

CNC Siemens 840D

This powerful CNC allows efficient and advanced management of the machine features, facilitating the operator's activity by allowing him to have everything under control.

Discover the possible workings

Morara MH 3000 D was created to meet the specific grinding needs of railway axles, from medium productions to single pieces: it is capable of grinding diameters from 50mm to 500mm, piece length up to 3000mm, obtaining geometric tolerances up to 5 microns.

Technical features

Distance between centers [mm]	3000
Max. grinding length with left wheel [mm]	2100
Max. grinding length with right wheel [mm]	2500
Center height [mm]	255 (330)
Max. grinding diameter [mm]	500
Max. weight between centers [kg]	500 – 1000 – 1500 -2000
Installed electrical power, without accessories [kW]	46
Total machine weight, without accessories [kg]	28000
Head wheel holder
Max. external wheel diameter x max. thickness. x hole [mm]	610x120x203 / (760 x 305 x 304.8)
Wheel motor power [kW]	40
Wheel peripheral speed [m / sec]	50
Axis wheel carriage orientation “ B ”
Axis resolution [mm]	0.0001
Transverse axis “ X”
Max. [mm]	470
Max speed [m / min]	15
Motor torque [Nm]	27
Resolution [mm]	0.0001
Axis longitudinal “Z”
Max. [mm]	3280
Max. [m / min]	15
Motor torque [Nm]	50
Resolution [mm]	0.0001
Head workpiece holder
Internal / external attack cone	Morse 4-5 / ASA 6
Speed range [rpm]	10 ÷ 200
Spindle torque [Nm]	50 ÷ 470
Tailstock
Inner cone attachment	Morse 6
Quill diameter [mm]	140
Quill stroke [mm]	120
Cylindricity correction [mm]	± 0,10
Subject to technical verification of the machine composition. Dimensions and weights may vary according to the selected accessories. Possible limitations based on the equipment used.