Optimum Milling machine OPTImill BF 20Vario


  • Stable drilling and milling machines with electronically infinitely variable drive. BF 20L with longer stage, BF 20LD with digital position indicator
  • Feed spindles adjustable without backlash by adjustable spindle nuts
  • Stable dovetail guide, precision ground and scraped with adjustable wedges
  • EMC filter class B (use in private households)
  • All guides are ground and visibly scraped (oil pockets for lubrication)
  • Precisely processed
  • Double-row angular contact ball bearings in the axles, adjustable without backlash
  • Safety electronics in 24 Volt version
  • Bellows as guide protection
  • Forward / reverse
  • Drilling and milling head tiltable by ± 90 °, for milling and drilling work in any angular position
  • Height-adjustable protective screen with microswitch against flying chips and parts for the utmost protection of the user

BF 20L:

  • Cross table length 700 mm
  • Travel X-axis 480 mm

BF 20LD:

  • Digital position indicator DRO5 and magnetic tapes in all three axes

Room amenities

control electronics

  • Integrated relay control
  • Optional CNC controller can turn the machine on and off


  • Two-stage gear ratio for powerful transmission of engine power (850 W)
  • Powerful DC motor with permanent current monitoring


  • Large, speed-controllable speed range of 90 – 3,000 rpm
  • Easy to read digital speed display

Start-stop connection

  • for optional CNC Conroller

sleeve travel

  • Digital
  • Accuracy of the display 0.01 mm
  • Switchable mm / inch

machine lamp

  • Integrated in the drilling milling head
  • Halogen pin base lamp, 12V – 10W


  • Reversible on both sides by 30 mm
  • When the head is tilted, longer travels and centric machining of the workpiece are possible
  • Back with hole
  • Slightly oil the trapezoidal spindle or grease of the ballscrews

Z-pillar and X-axis

  • Prepared 9 mm wide groove for the subsequent mounting of magnetic tapes by simply gluing

Tapered roller bearings

  • High concentricity ≤ o, o15 mm measured in the quill

cross table

  • Solid
  • Precise surface finish
  • With T-slots
  • Adjustable wedges
  • Adjustable via 3 hand wheels


  • With 2 milled pockets
  • By means of sleeves, the magnetic tape holder can be easily screwed

end stops

  • Mechanically
  • Adjustable

Longitudinal dimension scale

  • Taken in the cross table
  • Well readable

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Technical Specifications

Electrical voltage 230V
Phase (s) 1 Ph
Current Type ~
power frequency 50 Hz
Power drive motor 850W
Drilling capacity steel (S235JR) 16 mm
Continuous drilling capacity steel (S235JR) 12 mm
Knife head size max. 63 mm
End mill size max. 20 mm
Quill 50 mm
Spindle taper MK 2 / M 10
Throat 185 mm
Spindle speed 90 – 1,480 / 150 – 3,000 min-1
gear stages 2 levels, speed electronically adjustable
Vertical spindle Turning area milling head Z – X plane
Cross table (length x width) 510 x 180 mm
T-slot 12 mm
T-slots number 3
T-slots clearance 63 mm
Spindle cross table distance 375 mm
Payload cross table max. 50 kg
Travel X-axis 280 mm
Travel Y-axis 175 mm
Traverse Z-axis 280 mm
Dimensions (length x width x height) 745 x 565 x 935 mm
mass 103 kg