 Convincing arguments: quality, efficiency and price - Two-stage gear pair for a powerful conduction of the motor power
- D.C. motor with permanent speed monitoring
- Spindle sleeve feed via stargrip (drilling)
- Fine crossfeed of spindle sleeve when milling
- Feed spindles can be adjusted without clearance due to adjustable spindle nuts
- Digital sleeve travel indicator, precision of reading 0.01 mm
- Automatic off-switch (IP 54 compliant) for easy operation, with voltage circuit breaker
- Right left hand rotation
- Solid and precise dovetail slideway, adjustable without clearance V-ledge
- Expansion bellows for expansion bellows protection
- Easy and clear operation due to individually adjustable control panel
- Every travel is readable by graduation
- Machine lamp
- Electronic infinitely variable driving gear
More information here Overview for accessories milling here Extent of supply: - Draw-in rod M 10
- Drill chuck protection
- Digital sleeve travel indicator
- Operating tools
  OPTI BF 20 Vario check-out: Precision in metal “Metal working with Optimum BF 20 Vario is pur fun. Powerful, less vibration and quiet the versatile drillingmilling machine enables the production of dimensional accuracy work pieces with well proportioned surfaces. The price is without competition.” Upshot of Heimwerker Test - 03.2004 .
. Product of the year 2008 - german journal "Maschinen in Modellbau"  
Optional: CNC-complete and add-on kit see on pages CNC | model | OPTI BF 20 Vario | OPTI BF 20 L Vario |
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| Item no. | 333 8120 | 333 8122 | | EUR excl. VAT | 1.050,00 | 1.190,00 |
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| | Technical data |
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| Motor power 230 V / 50 Hz | 850 W | 850 W | | Drilling capacity (St.37) | Ø 16 mm | Ø 16 mm | | Continuous drilling capacity(St.37) | Ø 12 mm | Ø 12 mm | | Spindle holding fixture | MT 2/M 10 | MT 2 / M 10 | | Size cutter head max. | Ø 63 mm | Ø 63 mm | | Size end mill cutter max. | Ø 20 mm | Ø 20 mm | | Working range | 185 mm | 185 mm | | Sleeve travel | 50 mm | 50 mm | | Head rotation | ± 90 | ± 90 | | Z-axis travel | 280 mm | 280 mm | | Gear stages | 2 stages, continuously variable | 2 stages, continuously variable | | Spindle speeds | 90 - 3,000 rpm | 90 - 3,000 rpm | | Cross table size (L x W) | 500 x 180 mm | 700 x 180 mm | | Y-axis travel | 175 mm | 175 mm | | X-axis travel | 280 mm | 480 mm | | T-slot size | 12 mm | 12 mm | | T-slot distance | 63 mm | 63 mm | | Load of cross table | max. 55 kg | max. 55 kg | | Dimensions (L x W x H) | 670 x 550 x 860 mm | 870 x 550 x 860 mm | | Net weight | 103 kg | 115 kg | |
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