ARO Standard M Machines
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Range of M pneumatic and mechanical machines Glossary: WCC: Welding Cabinet Controller EL: Effective Length ED: Effective Depth SS: Single Stroke cylinder DS: Double Stroke cylinder Manual adjustment: Adjustment is performed by a pressure regulator which determines the compressed air supply of the cylinder in order to obtain the best clamping force. Electronic adjustment: The adjustment of the welding force of the cylinder is controlled by a proportional valve. Pressure program: This device allows the pressure to be varied during the force, for example, to reduce it when welding or to...

General presentation ARO, world leader in resistance welding, offers innumerable solutions for spot or projection welding applications, within the 50% of 30 kVA and 50 kVA power ranges. This new range of M machines, completely updated and redesigned, is structured around a single frame, with a choice of 2 pneumatic cylinders, 2 transformers and a range of 6 welding cabinet controllers (WCC). The user therefore has access to a wide range of possibilities to control better the welding current and the clamping force. The pneumatic M series is equipped in standard version with a wide diversity...

Vertical pneumatic descent Spot welding General characteristics: - 2 transformer powers: 30 or 50 kVA at 50%, - Standard voltage 400 V/50 Hz, - Cylinder clamping force at electrodes at 6 bars 740 daN, - Single stroke cylinder 100 mm, - or Double stroke cylinder 80+20 mm, - Effective depths at electrode axis, 350 or 550 mm, - Support stand for 550 mm electrode holder, - Machine equipped with standard electrode holder and a circuit breaker, - Effective spacing between arms from 59 to 374 mm (choice of 6 positions), - Machine completely cooled by water (transformer, secondary junctions,...

Rocker pneumatic descent General characteristics: - 2 transformer powers 30 or 50 kVA, - Standard voltage 400 V/50 Hz, - Delivered without electrode holders, - Effective spacing between electrode holders from 174 to 489 mm (choice of 6 positions), - Effective depths according to choice of electrode holders 250 350 550 750 950 mm - Cylinder clamping force at electrodes at 6 bars 870 590 358 257 200 daN - Single-stroke cylinder 80 mm, - or Double-stroke cylinder 60+20 mm, - Opening between electrodes adjustable from: 0 to 75 mm for an ED of 250 mm, 0 to 320 mm for an ED of 950 mm, - Machine...

Rocker mechanical descent General characteristics: - 2 transformer powers 30 or 50 kVA, - Standard voltage 400 V/50 Hz, - Delivered without electrode holders, - Effective spacing between electrode holders from 174 to 489 mm (choice of 6 positions), - Effective depths according to choice of electrode holders 250 350 550 750 950 mm - Clamping force between 150 and 400 daN for 250 mm standard electrode holders, - Automatic triggering of welding cycle when preset force is reached, - Machine completely cooled by water (transformer, secondary junctions, electrode holder and electrodes), -...

Standard electrode holders SYMMETRICAL SETUP UPPER AND LOWER ELECTRODE HOLDERS Effective length (C) References mm in 250 9.84 WK 110.300 350 13.78 WK 120.306 550 21.65 WK 140.303 750 29.53 WK 160.300 950 37.40 WK 180.300 Electrodes can be installed indifferently in straight or inclined position. For inclined position, it is however recommended to limit the effective inter-arm spacing to 415 mm. Lower shank WU 251.000 350 13.78 WK 120.305 550 21.65 WK 140.302 SETUP WITH ELECTRODE HOLDERS UPPER ELECTRODE HOLDERS STRAIGHT ELECTRODE HOLDERS Effective length (C) mm in 350 13.78 550 21.65 750...

WL 358156 with molybdenum insert WL 367156 long electrolytic copper for WL 359158 with molybdenum insert WL 360158 with molybdenum insert WL 364152 with molybdenum insert without marks highly excentered WL 311942 with large flat 90 mm WL 313949 with profile tip for tubes WL 420500 single flat electrodes WL 199901 straight electrode holder height (its attachment requires 2 half-rings

Projection welding General characteristics: - 2 transformer powers 30 or 50 kVA, - Standard voltage 400 V/50 Hz, - Cylinder clamping force 740 daN at 6 bars, - Single-stroke cylinder 100 mm, - or Double-stroke cylinder 80 + 20 mm, - Platen dimensions 150 x 150 mm, - 2 slots center distance 63 mm, - Effective spacing of platens 133/223/313 mm, - Effective depth at cylinder axis 150 mm, - Machine completely cooled by water (transformer, secondary junctions, platens), - Welding current adjustment by constant phase shift or by adaptive adjustment according to choice of WCC, - Bi-manual control...

Many ARO WCC options and variants guarantee high-performance operations in all types of applications. Secondary current adjustment, force control, program cascade are but some examples of the many functionalities proposed. This approach enables the complete series of M machines to accept a range of 6 different weldin cabinet controllers. 0 Standard function with corresponding version. O Optional function with corresponding version. Please contact us for other panels. (1) By request, supply from a separate network in case of power disjunction. (2) F: French, A: English, E: Spanish, I:...

Technical characteristics Spot welding MA type Projection welding Vertical pneumatic descent Rocker pneumatic descent Rocker mechanical descent Conventional power at 50% Effective depth Permanent power 100% Max short circuit power Max welding power Primary voltage rating Network frequency Consumed power Fuses Secondary no-load voltage Permanent current Max short circuit current Max welding current… …for a duty cycle of Steel sheet welding capacity Cooling Input/output connecting Ø Min/max service pressurei Water consumption (Average) Arm diameter mm Platen dimensions mm Arm adjustment...

Column-mounted lower electrode holder for MA/MC/MD: This option allows continuous adjustment of lower electrode holder height. Support stand for 350 mm electrode holder: Ensures rigidity of the assembly and allows precision welding. This option is strongly recommended when welding to quality charter. Manual pressure adjustment: In standard version on MA, MC and MB machines. Electronic pressure adjustment by proportional valve: This option allows the force to be stored in memory during the welding cycle from the WCC irrespective of the program used. Analog pressure sensor: This assembly only...