300 - 400mm Cast Iron Heavy Duty Grinder

The 300 - 400mm Series is a versatile Heavy Duty Machine manufactured to industrial standards – FEPA (Federation of European Producers of Abrasive Machinery) Heavy duty, burst protection guarding as standard.


All models are fitted with heavy duty work station guarding and equipped with:

  • Spark deflectors
  • Eye shield protection
  • Adjustable work rests
  • Dust sealed bearings with pressure greasing facilities
  • Adjustments to cater for bearing pre-loadings
  • Standard size consumable media
  • “V-Quick link Belting”
  • Totally enclosed motor drive system within the integral Cast Iron body
  • Electrical controls are of the “No Volt” release type with thermal overload contactors.
  • Supplied with optional single or three phase electrics for the 300mm model or 3phase for the 350/400mm models


    Machines running at 60Hz will have the spindle speed increased by 20%, therefore grinding wheels must be speed rated accordingly. Grinding spindles/wheel plates accept 25.4mm for 300mm models and 31.75mm for 350/400mm models.


  • Coolant systems available
  • Side grinding option (300mm)
  • Single end configuration
  • Twist drill grinding attachment (300mm)
  • Low voltage lighting
  • Dust extraction systems available
  • Guarding is supplied with or without extraction ports, to be specified at time of order
    Standard Wheel – PG Ref mm 300x40x25.4 350x50x31.75 400x50x31.75
    Side Grinder –PGS Ref mm 300x75x25.4 N/A N/A
    Wheel peripheral speed m/s 29.7 29 28.9
    Spindle speed rpm 1840 1580 1420
    Spindle bearing diameter mm 38.1 38.1 38.1
    Wheel centres mm 476 562 576
    Height to wheel centre mm 890 890 890
    Overall height mm 1080 1110 1130
    Motor power - 3Phase Kw 1.5 2.2 2.2
    Motor power - 1 Phase kw 1.5 N/A N/A
    Maximum footprint mm 625x638 675x711 725x737
    With coolant trays mm 873x775 985x850 985x850
    Weight - Standard machine Kg 210 230 250
    Hi-Spec CNC products are designed and manufactured to comply with all statutory safety requirements in force within the European Union; marked and certified accordingly.

    Particular attention must be given, by the end user, to any mandatory local or national requirements, especially those relating to grinding wheels; the protection of eyes and control of substances hazardous to health.
    Product Code Description Mounting Speed Motor
    PGG300F-1PH 300mm - Grinder / Grinder Cast Iron Pedestal 1840rpm Single Phase
    PGS300F-1PH 300mm - Grinder / Side Grinder Cast Iron Pedestal 1840rpm Single Phase
    PGG300F-3PH 300mm - Grinder / Grinder Cast Iron Pedestal 1840rpm Three Phase
    PGS300F-3PH 300mm - Grinder / Side Grinder Cast Iron Pedestal 1840rpm Three Phase
    PGG350F-3PH 350mm - Grinder / Grinder Cast Iron Pedestal 1580rpm Three Phase
    PGG400F-3PH 350mm - Grinder / Grinder Cast Iron Pedestal 1420rpm Three Phase