Buehler · Grinding & Polishing

AutoMet® 300 Pro Semi-Automatic Grinder-Polisher

12″ [305mm] Platen Grinder-Polisher for High-Volume Labs

★★★★★ 4.9 out of 5 · 116 reviews

The semi-automatic AutoMet 300 Pro grinder-polisher machine is ideal for the highest volume and most demanding environments. This robust machine, compatible with a 12″ [305mm] maximum platen, 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.

12in [305mm]Max Platen Diameter

Up to 50mmMax Specimen Diameter

2Hp [750W]Motor Power

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Buehler AutoMet 300 Pro — semi-automatic grinder-polisher

AutoMet 300 Pro Benefits

Built for the largest sample volumes, the most consistent surface quality, and easy day-to-day operation.

Largest Volume and Sample Size

Great for samples up to 50mm in diameter
Compatible with higher volume sample holders
2hp [1.5kW] motor for higher volume processing

Improved Surface Quality and Consistency

Multi-step method storage for sample consistency
Z-axis removal for a consistent grind
Automated dispensing with up to 5 Burst units for consistency, controlled from the touchscreen, so users can perform other tasks during polishing

Easy to Use

Intuitive touchscreen
Quick load sample holders
Compatible with Apex S and Magnetic platen systems for fast consumable changing
Rinse and Spin feature to clean the polishing surface and bowl

Ordering Information

Contact Censico for current pricing and lead times.

AutoMet 300 Pro

Part Number	Voltage
49-7268	170–240VAC, 50–60Hz

Technical Specifications

Full specification sheet for the Buehler AutoMet 300 Pro.

AutoMet 300 Pro
Machine Power	170–240VAC, 50/60Hz, 1 phase
Motor Power	2Hp [750W]
Platen Diameter	12in [305mm]
Platen Wheel Speed	50–400rpm 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	2.3kW, 10A @ 230VAC
Base & Head Power Usage	3.6kW, 15A @ 230VAC
Membrane Control Panel	Three 3-digit LED displays, 14 status LEDs; Units: Metric or Imperial
Touchscreen Control Panel	Full color LCD Screen; 7in [175mm] diagonal; NEMA4 (IP65) water resistant
Base Sound Rating	(1.5ft, 0.5m) distance, no load: 51.5dB @ 100rpm
Base & Head Sound Rating	64.5dB @ 100/60rpm
Weight	219lbs [99kg]
Compliance	CE; EC applicable directives

Power Head
Machine Power	0.75Hp [560W]
Speed	50–150rpm in 10rpm increments
Central Specimen Force	10–120 lbs [40–535N]
Single Specimen Force	1–20 lbs [5–90N]
Central Force Specimen Capacity	1in, 1.25in, 1.5in, 2in, 25mm, 30mm, 40mm, 50mm and large or irregular specimens
Single Force Specimen Capacity	1in, 1.25in, 1.5in, 2in, 25mm, 30mm, 40mm, 50mm
Air Supply Hose	0.25in [6mm] OD tube
Air Supply Pressure	35psi [2.4bar]
Power Usage	1.3kW, 5.65A @ 230VAC
Weight	92 lbs [42kg]
Compliance	CE; EC applicable directives

Applications & Industries Served

The AutoMet 300 Pro is used wherever labs need the highest sample throughput without sacrificing surface quality or consistency.

Typical Applications

High-volume grinding and polishing of metallographic samples
Large or irregular specimen preparation
Multi-step method-driven sample preparation workflows
Failure analysis and root-cause investigation
Demanding, round-the-clock production sample prep

Industries Served

Automotive Aerospace Academic & Research Institutions Government & Defence Labs Quality Control Laboratories Foundries & Metal Processing

Accessories & Compatible Consumables

Pair the AutoMet 300 Pro with genuine Buehler consumables for an unparalleled surface finish.

CarbiMet Grinding Paper MetaDi Diamond Suspension Fluid Apex S Platen System Magnetic Platen System Higher Volume Sample Holders

View all grinding & polishing consumables →

Downloads

Product literature for the AutoMet 300 Pro.

📄 BrochurePDF · Product overview

Related Grinding & Polishing Machines

Other grinding and polishing machines in Buehler's range.

Frequently Asked Questions

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What is the Buehler AutoMet 300 Pro used for? ▾

The AutoMet 300 Pro is a semi-automatic grinder-polisher built for the highest volume and most demanding lab environments, compatible with a 12in [305mm] maximum platen.

What sample sizes does the AutoMet 300 Pro support? ▾

It's great for samples up to 50mm in diameter and is compatible with higher volume sample holders, with central specimen force of 10-120 lbs [40-535N] and single specimen force of 1-20 lbs [5-90N].

How does the AutoMet 300 Pro maintain consistent results at high volume? ▾

Multi-step method storage keeps samples consistent, Z-axis removal ensures a consistent grind, and automated dispensing with up to 5 Burst units keeps polishing consistent while freeing users to work on other tasks.

Is the AutoMet 300 Pro easy to use? ▾

Yes. It features an intuitive touchscreen, quick-load sample holders, compatibility with Apex S and Magnetic platen systems for fast consumable changes, and a Rinse and Spin feature to clean the polishing surface and bowl.

Where can I buy a genuine Buehler AutoMet 300 Pro in India? ▾

Censico International Pvt. Ltd. is Buehler's exclusive distribution partner for the Indian Subcontinent. You can request a quote for the AutoMet 300 Pro directly through Censico, with pan-India delivery and technical support.

Ready to talk about the AutoMet 300 Pro?

Get a quote, ask a technical question, or check current stock — Censico's team responds fast.

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