Home / MPI Products / Metal Fabrication and Material Handling Solutions / Automation and Workholding / Electro and ElectroPermanent Magnetic Chucks and Controllers / ElectroPermanent Mastermill Milling Chuck

ElectroPermanent Mastermill Milling Chuck

Suitable for Both Small and Large Workpieces

The MPI ElectroPermanent Mastermill Milling Chuck is a versatile magnetic chuck for milling and drilling of both small and large workpieces. Using pole extensions, the material can be machined from five (5) sides, drilled through, and uneven material can be machined as well. For optimum holding force, the required workpiece thickness is at least 0.47 in.

ElectroPermanent-Mastermill
MPI-Electropermanent-Mastermill-Milling-Chuck-2, magnetic chuck for grinding, magnetic chuck, magnetic chucks
MPI-Electropermanent-Mastermill-Milling-Chuck-1, magnetic chuck for grinding, magnetic chuck, magnetic chucks
MPI-Electropermanent-Mastermill-Milling-Chuck-4, magnetic chuck for grinding, magnetic chuck, magnetic chucks
MPI-Electropermanent-Mastermill-Milling-Chuck-3, magnetic chuck for grinding, magnetic chuck, magnetic chucks
Ask a Question
Datasheet
MPI Promise

Benefits of the ElectroPermanent Mastermill Milling Chuck From Magnetic Products, Inc

  • Slot round the entire perimeter for easy attachment to machine table
  • Stop blocks can be moved freely to any side
  • Material can be machined from five (5) sides, drilled through, and uneven material can be machined as well using pole extensions
  • Option to connect set of magnets to a single control unit
  • Shown with optional square pole extensions
  • Quick push-pull connector
      • Top plate in steel/stainless steel combination guarantees high mechanical durability and thermal resistance
      • One (1) year warranty for the magnetic system
      • Manufactured in Europe to the highest quality standards
      • Included with Each Magnet: Supplied with two (2) side stoppers and 6m/20’ armored cable
      • Note: Control Unit sold separately

      ElectroPermanent Mastermill Milling Chuck Product Details

      How It Works

      The ElectroPermanent Mastermill Milling Chuck is a chuck with 50×50 mm square poles, a compact low design (only 51 mm high) and a nominal holding force of 170 N/cm2. The ElectroPermanent magnet has a practical offset (slot) around its entire perimeter for clamps and there is also enough space on the magnet to perform through clamping holes. Using pole extensions, the material can be machined from five (5) sides, drilled through, and uneven material can be machined as well.

      Product Options
      • Different cable junction box location
      • Through-going holes for fixing the chuck to the machine table
      • Holes for pole extensions
      • Fixed and adjustable pole extensions, allowing machining from five (5) sides
      • Other input voltages
      • Suitable control unit and electrical connection.
      • Special Order FOB Factory call local Distributor for Price and Delivery
      • Note:  Control Unit sold separately
      Specifications

      When to choose the MPI ElectroPermanent Mastermill Milling Chuck:

      The MPI ElectroPermanent Mastermill Milling Chuck is a versatile magnetic chuck for milling and drilling of both small and large workpieces. Using pole extensions, the material can be machined from five (5) sides, drilled through, and uneven material can be machined as well. For optimum holding force, the required workpiece thickness is at least 0.47 in.

      Important parameters:

      • Application: Milling
      • Technology: Electropermanent
      • Chuck dimensions: from 12x20in
      • Holding force: 170 N/cm² / 246 lbs/cm²
      • Min. workpiece size: 50mm x 110mm x 20mm/2”x4.3”x0.787”
      • Recommended workpiece thickness: minimum 12mm/ 0.47”
      • Regrinding limit: 6mm / .236”
      • Pole size: 2 x 2 in
      • Poles: Square

      Use:

      • machining of uneven parts up to five (5) sides
      • clamping of a wide range of workpiece sizes during milling
      • clamping of large forms, castings, blocks, structures, etc. during drilling operations
      • rough grinding of large parts

      Note:  Control Unit sold separately

      		 MPI Magnetic Products, Inc.

      ElectroPermanent Mastermill Milling Chuck

      • US Customary Units
      • Metric Units

      US Customary Units

      Part Number W L H Number of Poles Weight
      IN IN IN LBS
      MM-50-300430-EP 12 18 2 24 97
      MM-50-300490-EP 12 20 2 24 108
      MM-50-300600-EP 12 24 2 32 135
      MM-50-300800-EP 12 32 2 40 181
      MM-50-300900-EP 12 36 2 48 203
      MM-50-420430-EP 16 18 2 36 134.5
      MM-50-420490-EP 16 20 2 36 154
      MM-50-420600-EP 16 24 2 48 190
      MM-50-420800-EP 16 32 2 60 251
      MM-50-420900-EP 16 36 2 72 282
      MM-50-420990-EP 16 40 2 72 313
      MM-50-480490-EP 18 20 2 42 176
      MM-50-480600-EP 18 24 2 56 214
      MM-50-480800-EP 18 320 2 70 287
      MM-50-480900-EP 18 36 2 84 322
      MM-50-480990-EP 18 40 2 84 355
      MM-50-580600-EP 22 24 2 64 260
      MM-50-580800-EP 22 33 2 80 346
      MM-50-580900-EP 22 36 2 96 390
      MM-50-580990-EP 22 40 2 96 428

      Metric Units

      Part Number W L H Number of Poles Weight
      MM MM MM KG
      MM-50-300430-EP 300 480 51 24 44
      MM-50-300490-EP 300 490 51 24 49
      MM-50-300600-EP 300 600 51 32 61
      MM-50-300800-EP 300 800 51 40 82
      MM-50-300900-EP 300 900 51 48 92
      MM-50-420430-EP 420 430 51 36 61
      MM-50-420490-EP 420 490 51 36 70
      MM-50-420600-EP 420 600 51 48 86
      MM-50-420800-EP 420 800 51 60 114
      MM-50-420900-EP 420 900 51 72 128
      MM-50-420990-EP 420 990 51 72 142
      MM-50-480490-EP 480 490 51 42 80
      MM-50-480600-EP 480 600 51 56 97
      MM-50-480800-EP 480 800 51 70 130
      MM-50-480900-EP 480 900 51 84 146
      MM-50-480990-EP 480 990 51 84 161
      MM-50-580600-EP 580 600 51 64 118
      MM-50-580800-EP 580 800 51 80 157
      MM-50-580900-EP 580 900 51 96 177
      MM-50-580990-EP 580 990 51 96 194
        Related Resources
        Locate a Distributor
        Distributor Name Distributor Product Part Number Product URL
        MM-50-300430-EP Penn-Tool-Co-logo MM-50-300430-EP https://www.penntoolco.com/mpi-electropermanent-mastermill-milling-chuck-12-x-18-mm-50-300430-ep/
        MM-50-300490-EP MM-50-300490-EP https://www.pts-tools.com/catalogue/product/1902913
        MM-50-300490-EP MM-50-300490-EP https://www.berkshireesupply.com/catalogue/product/1902913
        MM-50-300600-EP MM-50-300600-EP https://www.pts-tools.com/catalogue/product/1902912
        MM-50-300600-EP MM-50-300600-EP https://www.berkshireesupply.com/catalogue/product/1902912
        MM-50-300800-EP MM-50-300800-EP https://www.pts-tools.com/catalogue/product/1902911
        MM-50-300800-EP MM-50-300800-EP https://www.berkshireesupply.com/catalogue/product/1902911
        MM-50-300900-EP MM-50-300900-EP https://www.pts-tools.com/catalogue/product/1902910
        MM-50-300900-EP MM-50-300900-EP https://www.berkshireesupply.com/catalogue/product/1902910
        MM-50-420430-EP MM-50-420430-EP https://www.pts-tools.com/catalogue/product/1902909
        MM-50-420430-EP MM-50-420430-EP https://www.berkshireesupply.com/catalogue/product/1902909
        MM-50-420490-EP MM-50-420490-EP https://www.pts-tools.com/catalogue/product/1902908
        MM-50-420490-EP MM-50-420490-EP https://www.berkshireesupply.com/catalogue/product/1902908
        MM-50-420600-EP MM-50-420600-EP https://www.pts-tools.com/catalogue/product/1902907
        MM-50-420600-EP MM-50-420600-EP https://www.berkshireesupply.com/catalogue/product/1902907
        MM-50-420800-EP MM-50-420800-EP https://www.pts-tools.com/catalogue/product/1902906
        MM-50-420800-EP MM-50-420800-EP https://www.berkshireesupply.com/catalogue/product/1902906
        MM-50-420900-EP MM-50-420900-EP https://www.pts-tools.com/catalogue/product/1902905
        MM-50-420900-EP MM-50-420900-EP https://www.berkshireesupply.com/catalogue/product/1902905
        MM-50-420990-EP MM-50-420990-EP https://www.pts-tools.com/catalogue/product/1902904
        MM-50-420990-EP MM-50-420990-EP https://www.berkshireesupply.com/catalogue/product/1902904
        MM-50-480490-EP MM-50-480490-EP https://www.pts-tools.com/catalogue/product/1902903
        MM-50-480490-EP MM-50-480490-EP https://www.berkshireesupply.com/catalogue/product/1902903
        MM-50-480600-EP MM-50-480600-EP https://www.pts-tools.com/catalogue/product/1902902
        MM-50-480600-EP MM-50-480600-EP https://www.berkshireesupply.com/catalogue/product/1902902
        MM-50-480800-EP MM-50-480800-EP https://www.pts-tools.com/catalogue/product/1902901
        MM-50-480800-EP MM-50-480800-EP https://www.berkshireesupply.com/catalogue/product/1902901
        MM-50-480900-EP MM-50-480900-EP https://www.pts-tools.com/catalogue/product/1902900
        MM-50-480900-EP MM-50-480900-EP https://www.berkshireesupply.com/catalogue/product/1902900
        MM-50-480990-EP MM-50-480990-EP https://www.pts-tools.com/catalogue/product/1902899
        MM-50-480990-EP MM-50-480990-EP https://www.berkshireesupply.com/catalogue/product/1902899
        MM-50-580600-EP MM-50-580600-EP https://www.pts-tools.com/catalogue/product/1902898
        MM-50-580600-EP MM-50-580600-EP https://www.berkshireesupply.com/catalogue/product/1902898
        MM-50-580800-EP MM-50-580800-EP https://www.pts-tools.com/catalogue/product/1902897
        MM-50-580800-EP MM-50-580800-EP https://www.berkshireesupply.com/catalogue/product/1902897
        MM-50-580900-EP MM-50-580900-EP https://www.pts-tools.com/catalogue/product/1902931
        MM-50-580900-EP MM-50-580900-EP https://www.berkshireesupply.com/catalogue/product/1902931
        MM-50-580990-EP MM-50-580990-EP https://www.pts-tools.com/catalogue/product/1902930
        MM-50-580990-EP MM-50-580990-EP https://www.berkshireesupply.com/catalogue/product/1902930
        MM-50-300430-EP Penn-Tool-Co-logo MM-50-300430-EP https://www.penntoolco.com/mpi-electropermanent-mastermill-milling-chuck-12-x-18-mm-50-300430-ep/
        MM-50-300430-EP MM-50-300430-EP https://www.shop.crestonindustrial.com/catalogue/product/1902896
        MM-50-300490-EP Penn-Tool-Co-logo MM-50-300490-EP https://www.penntoolco.com/mpi-electropermanent-mastermill-milling-chuck-12-x-20-mm-50-300490-ep/
        MM-50-300490-EP MM-50-300490-EP https://www.shop.crestonindustrial.com/catalogue/product/1902913
        MM-50-300600-EP Penn-Tool-Co-logo MM-50-300600-EP https://www.penntoolco.com/mpi-electropermanent-mastermill-milling-chuck-12-x-24-mm-50-300600-ep/
        MM-50-300600-EP MM-50-300600-EP https://www.shop.crestonindustrial.com/catalogue/product/1902912
        MM-50-300800-EP Penn-Tool-Co-logo MM-50-300800-EP https://www.penntoolco.com/mpi-electropermanent-mastermill-milling-chuck-12-x-32-mm-50-300800-ep/
        MM-50-300800-EP MM-50-300800-EP https://www.shop.crestonindustrial.com/catalogue/product/1902911
        MM-50-300900-EP Penn-Tool-Co-logo MM-50-300900-EP https://www.penntoolco.com/mpi-electropermanent-mastermill-milling-chuck-12-x-36-mm-50-300900-ep/
        MM-50-300900-EP MM-50-300900-EP https://www.shop.crestonindustrial.com/catalogue/product/1902910
        MM-50-420430-EP Penn-Tool-Co-logo MM-50-420430-EP https://www.penntoolco.com/mpi-electropermanent-mastermill-milling-chuck-16-x-18-mm-50-420430-ep/
        MM-50-420430-EP MM-50-420430-EP https://www.shop.crestonindustrial.com/catalogue/product/1902909
        MM-50-420490-EP Penn-Tool-Co-logo MM-50-420490-EP https://www.penntoolco.com/mpi-electropermanent-mastermill-milling-chuck-16-x-20-mm-50-420490-ep/
        MM-50-420490-EP MM-50-420490-EP https://www.shop.crestonindustrial.com/catalogue/product/1902908
        MM-50-420600-EP Penn-Tool-Co-logo MM-50-420600-EP https://www.penntoolco.com/mpi-electropermanent-mastermill-milling-chuck-16-x-24-mm-50-420600-ep/
        MM-50-420600-EP MM-50-420600-EP https://www.shop.crestonindustrial.com/catalogue/product/1902907
        MM-50-420800-EP Penn-Tool-Co-logo MM-50-420800-EP https://www.penntoolco.com/mpi-electropermanent-mastermill-milling-chuck-16-x-32-mm-50-420800-ep/
        MM-50-420800-EP MM-50-420800-EP https://www.shop.crestonindustrial.com/catalogue/product/1902906
        MM-50-420900-EP Penn-Tool-Co-logo MM-50-420900-EP MPI ElectroPermanent Mastermill Milling Chuck, 16″ x 36″ – MM-50-420900-EP
        MM-50-420900-EP MM-50-420900-EP https://www.shop.crestonindustrial.com/catalogue/product/1902905
        MM-50-420990-EP Penn-Tool-Co-logo MM-50-420990-EP MPI ElectroPermanent Mastermill Milling Chuck, 16″ x 40″ – MM-50-420990-EP
        MM-50-420990-EP MM-50-420990-EP https://www.shop.crestonindustrial.com/catalogue/product/1902904
        MM-50-480490-EP Penn-Tool-Co-logo MM-50-480490-EP https://www.penntoolco.com/mpi-electropermanent-mastermill-milling-chuck-18-x-20-mm-50-480490-ep/
        MM-50-480490-EP MM-50-480490-EP https://www.shop.crestonindustrial.com/catalogue/product/1902903
        MM-50-480600-EP Penn-Tool-Co-logo MM-50-480600-EP https://www.penntoolco.com/mpi-electropermanent-mastermill-milling-chuck-18-x-24-mm-50-480600-ep/
        MM-50-480600-EP MM-50-480600-EP https://www.shop.crestonindustrial.com/catalogue/product/1902902
        MM-50-480800-EP Penn-Tool-Co-logo MM-50-480800-EP https://www.penntoolco.com/mpi-electropermanent-mastermill-milling-chuck-18-x-32-mm-50-480800-ep/
        MM-50-480800-EP MM-50-480800-EP https://www.shop.crestonindustrial.com/catalogue/product/1902901
        MM-50-480900-EP Penn-Tool-Co-logo MM-50-480900-EP https://www.penntoolco.com/mpi-electropermanent-mastermill-milling-chuck-18-x-36-mm-50-480900-ep/
        MM-50-480900-EP MM-50-480900-EP https://www.shop.crestonindustrial.com/catalogue/product/1902900
        MM-50-480990-EP Penn-Tool-Co-logo MM-50-480990-EP https://www.penntoolco.com/mpi-electropermanent-mastermill-milling-chuck-18-x-40-mm-50-480990-ep/
        MM-50-480990-EP MM-50-480990-EP https://www.shop.crestonindustrial.com/catalogue/product/1902899
        MM-50-580600-EP Penn-Tool-Co-logo MM-50-580600-EP https://www.penntoolco.com/mpi-electropermanent-mastermill-milling-chuck-22-x-24-mm-50-580600-ep/
        MM-50-580600-EP MM-50-580600-EP https://www.shop.crestonindustrial.com/catalogue/product/1902898
        MM-50-580800-EP Penn-Tool-Co-logo MM-50-580800-EP https://www.penntoolco.com/mpi-electropermanent-mastermill-milling-chuck-22-x-32-mm-50-580800-ep/
        MM-50-580800-EP MM-50-580800-EP https://www.shop.crestonindustrial.com/catalogue/product/1902897
        MM-50-580900-EP Penn-Tool-Co-logo MM-50-580900-EP https://www.penntoolco.com/mpi-electropermanent-mastermill-milling-chuck-22-x-36-mm-50-580900-ep/
        MM-50-580900-EP MM-50-580900-EP https://www.shop.crestonindustrial.com/catalogue/product/1902931
        MM-50-580990-EP Penn-Tool-Co-logo MM-50-580990-EP https://www.penntoolco.com/mpi-electropermanent-mastermill-milling-chuck-22-x-40-mm-50-580990-ep/
        MM-50-580990-EP MM-50-580990-EP https://www.shop.crestonindustrial.com/catalogue/product/1902930