AutoMet® 250 Pro Grinder-Polisher

AutoMet 250 Pro

Semi-Automatic Grinder-Polisher

The semi-automatic AutoMet 250 Pro grinder polisher machine is compatible with a maximum 10in [254mm] platen and is ideal for high volume environments. This robust machine produces highly reliable results and is easy to use while having advanced features to give you the best surface finish possible. Combine with premium CarbiMet grinding paper and MetaDi diamond suspension fluid for an unparalleled surface finish.

AutoMet 250 Pro benefits

Intuitive Operation
  • Easy to use touchscreen
  • Quick load sample holders
  • Utilize Apex S and Magnetic platen systems to change grinding discs and polishing cloths quickly
  • Rinse and Spin cleans the cloth and bowl
Highly consistent
  • Use up to 5 Burst units to automatically and consistently dispense diamond suspension; can control from touchscreen
  • Multi-step method storage for consistency and reduced setup time
  • Z-axis removal for a controlled, automatic grind
Ideal for High Volume and Large Sample size
  • Great for samples up to 40mm in diameter
  • Compatible with medium to high volume sample holders
  • 1hp [0.75kW] motor for higher volume processing


AutoMet 250 Pro
Part Number Voltage Request a Quote
49-7258 100 - 240VAC, 50-60Hz Request a Quote


AutoMet 250 Pro
Machine Power 100-240VAC, 50/60Hz, 1 phase
Motor Power 1Hp [750W]
Platen Diameter 8in [203mm], 10in [254mm]
Platen Wheel Speed 10-500rpm in 10rpm increments
Wheel Direction Clockwise or Counter-Clockwise
Water Supply Hose 0.25in [6mm] OD tube
Water Supply Pressure 40-100psi [25-60bar]
Base Power Usage 1.1kW, 15/4.8A @ 115/230VAC
Base & Head Power Usage 1.73kW, 15/7.5A @ 115/230VAC
Membrane Control Panel for 250 Pro Three 3-digit LED displays, 14 status LED’s; Units: Metric or Imperial
Touchscreen Control Panel for 250 Pro Full color LCD Screen; 7in [175mm] diagonal; NEMA4 (IP65) water resistant
Base Sound Rating (1.5ft, 0.5m)distance no load 59.5dB @ 100rpm
Base & Head Sound Rating 61.5dB @ 100/30rpm
Weight 170lbs [77kg]
Compliance CE; EC applicable directives
Specifications Power Head
Machine Power 0.156Hp [116W]
Speed 30-60rpm in 10rpm increments
Central Specimen Force 5-60 lbs [20-260N]
Single Specimen Force 1-10 lbs [5-45N]
Central Force Specimen Capacity 1in, 1.25in, 1.5in, 25mm, 30mm, 40mm and large or irregular specimens
Single Force Specimen Capacity 1in, 1.25in, 1.5in, 25mm, 30mm, 40mm
Air Supply Hose 0.25in [6mm] OD tube
Air Supply Pressure 35psi [2.4bar]
Power Usage 630W, 5.5/2.7A @ 115/230VAC
Weight 70 lbs [32kg]
Compliance CE; EC applicable directives
Consumables and Accessories

Automatic Polishing Suspension Dispensing System

Silicone Carbide Grinding Paper

Diamond Polishing Suspension
Polishing cloths for AutoMet 250
Related Products

8-12in [203-305mm]
Semi-Automatic Grinder-Polisher

8-10in [203-254mm]
Semi-Automatic Grinder-Polisher

8-12in [203-305mm]
Semi-Automatic Grinder-Polisher

8-12in [203-305mm]
Manual Grinder-Polisher
Product Literature
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AutoMet Sell Sheet
AutoMet Brochure English
AutoMet Brochure
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Buehler is a division of Illinois Tool Works (ITW) and is based in Lake Bluff, Illinois. Our company’s legacy comprises groundbreaking designs including the first commercially available mounting press, the first Rockwell hardness tester and we were the first to automate polishing. This same forward-looking spirit, combined with a strong understanding of lab priorities, continues to inform how we serve our customers world-wide.

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