MACRI ITALIA PROVAR 6-90 U-D tube bending machine

MACRI ITALIA PROVAR 6-90 U-D tube bending machine built in 2021 in Italy is designed for fully automatic, precise bending of tubes and profiles with a maximum diameter of 90 mm. The machining process is performed by the machine in 6 numerically controlled axes (X, Y, Z, B1, B2, A) by means of a movable working head with ground gears of superior strength. Each axis is additionally equipped with reliable brushless servomotors, which guarantee excellent dynamics and positioning accuracy throughout its lifetime.

The MACRI ITALIA mandrel bending machine is offered with an extensive range of equipment, including top brand components (BOSCH REXROTH, SCHNEIDER, etc.) and innovative 3D software with anti-collision system and automatic workpiece correction. The machine is practically new – it has worked for only 20 hours. The PROVAR 6-90 U-D CNC bending machine weighs approximately 6500 kg.

Technical specifications of the MACRI ITALIA PROVAR 6-90 U-D tube and profile bending machine

General data

• number of axes: 6

bending (Y axis)
traverse (X axis)
rotation (Z axis)
lateral movement of the positioner (B1 axis)
lateral movement of the mandrel (B2 axis)
up-down movement of the head (A axis)

• maximum tube diameter: 90 mm
• useful working length: 3600 mm
• maximum bending angle: 195°
• bending speed (Y axis): 45°/1″
• traverse speed (X axis): 650 mm/1″
• maximum clamp rotation speed (Z axis): 180°/1″
• maximum travel speed (B1 axis): 6 mt/1″
• maximum travel speed (B2 axis): 6 mt/1″
• maximum travel speed (A axis): 4 mt/1″
• Y-axis tolerance: ± 0.1°
• X-axis tolerance: ± 0.1 mm
• Z-axis tolerance: ± 0,1°
• B1-axis tolerance: ± 0,1 mm
• B2-axis tolerance: ± 0,1 mm
• A-axis tolerance: ± 0.1 mm
• A-axis travel: 210 mm
• spindle retraction stroke: 140 mm
• direction of rotation: clockwise
• 3 levels of working with variable radius in automatic mode
• operating hours: 20 h
• power: 36 kW
• power supply: 400 V; 50 Hz
• weight of machine: approx. 6500 kg

Capacity

• round tube R=42 Kg/mm2: 90×7 mm
• bending radius R=42 Kg/mm2 Min. centre R 10 D: 90×2 mm
• stainless steel round tube: 90×4
• round tube (Al, Cu, Ot): 90×10 mm
• square tube R=42 Kg/mm2: 60×60×3 mm
• rectangular tube (easy way): 40x80x2 mm
• rectangular tube (difficult way): 80x50x2 mm
• round bar R=42 Kg/mm2: 50 mm
• square bar R=42 Kg/mm2: 40×40 mm

Equipment of the MACRI PROVAR bending machine

• 3D software with anti-collision system and automatic workpiece correction
• brushless servo motors on all axes
• tools for tubes with diameters of 63 mm; 76.1 mm; 88.9 mm
• quick tool change system based on fixed distances integral to each tool
• early mandrel ejection
• automatic mandrel lubrication
• heat exchanger
• linear guides: BOSCH REXROTH
• epicycloidal reducers with reduced backlash: BONFIGLIOLI
• electrical components: SCHNEIDER, WAGO, ELTRA
• electronic components

servo drive: ELCOM
motors: LAFERT

• pneumatic components: CAMOZZI
• hydraulic components: PARKER
• aluminium safety mat 3×1 m
• operating manual
• technical documentation of the machine
• CE declaration of conformity