Magnetic chuck for milling Mastermill 70

When to choose a Mastermill 70 SQ electropermanent magnetic chuck:

If you are looking for a versatile magnetic chuck for heavy duty milling and drilling of medium-sized and large workpieces, draw you attention to Mastermill 70SQ chuck. Compared to the basic Mastermill SQ series, the larger 70x70 mm magnetic poles offer higher performance in combination with pole extensions for effective claming of uneven workpieces or 5-side machining in a single setup. For optimum holding force, the required workpiece thickness is at least 17 mm. Thanks to the combination of steel/stainless steel materials on the top plate, this series of magnetic clamping chucks is suitable for dry or MQL machining processes.

Advantages:

„Sandwich“ construction of the magnet with upper top plate guarantees the absolute waterproofness and long service life
Possibility to machine the workpiece from 5 sides, drill through or machine uneven workpieces
The stop blocks can be moved freely to any side
Slot round the entire perimeter – for easy attachment to the machine table
Possibility to perform through going holes for additional fixing to table
6 m-long armoured power supply cable
Possibility to connect a set of several magnets to a single control unit

Available also in custom-made dimensions

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Catalog number	Chuck dimension	Height [mm]	Availability (approximate)	Price without VAT (valid for EU only)

Detailed description:

Mastermill 70SQ is an electro-permanent magnetic clamping plate with a pole size of 70 x 70 mm, a construction with a total height of 68 mm and a nominal clamping force of 170 N / cm². Around the perimeter of the magnet is practical offset for the clamps, the magnet also has enough space for through holes.
The standard design includes a quick „bayonet“ coupling connector, stop blocks on 2 sides and a the 6 metre-long armored power cord. All magnetic poles are provided with M8 threads for easy mounting of pole extensions.

Important parameters:

Application: Milling
Technology: Electropermanent
Holding force: 170 N/cm²
Min. workpiece size: 150 x 150 x 17 mm
Poles: Square – steel/stainless steel combination for high durability and long service life
Regrinding limit: 6 mm
Pole size: 70 x 70 mm
Chuck height 68 mm
Guarantee: 2 years

Additional information:

Beyond the standard design, the customer can choose:

different cable outlet location on the magnet
fixed (screwed) el. outlet – the connector is moved to the control unit
through going holes for fastening the magnet to the table
centering stones and grooves on the bottom side of the body for precise installation (centering with the machine table axis)
multi-section chuck (possibility to devide the clamping area into several independent segments)

If you have any questions about the arrangement of the chuck or about the selection of a suitable control unit, contact us. We will be happy to advise you.

Use:

Machining of uneven parts up to 5 sides
Clamping of a wide range of workpiece sizes during milling
Clamping of large forms, castings, blocks, structures, etc.
Rough grinding of large parts

Scope of supply:

Magnetic chucks
Side stop blocks
Armoured power supply cord
Certificate
Operation and maintenance instructions

Catalog number	Number of poles	W (mm)	L (mm)	H (mm)	weight (kg)
MM70300620	18	300	620	68	86
MM70300820	24	300	820	68	114
MM703001020	30	300	1020	68	142
MM70380420	16	380	420	68	74
MM70380540	20	380	540	68	95
MM70380620	24	380	620	68	109
MM70380820	32	380	820	68	144
MM703801020	40	380	1020	68	180
MM70460540	25	460	540	68	115
MM70460620	30	460	620	68	132
MM70460820	40	460	820	68	175
MM704601020	50	460	1020	68	218
MM70580620	36	580	620	68	167
MM70580820	48	580	820	68	221
MM705801020	60	580	1020	68	274