Buehler · Grinding & Polishing

AutoMet® 250 Semi-Automatic Grinder-Polisher

Up to 10″ [254mm] Platen Grinder-Polisher for High Volume Labs

★★★★★ 4.9 out of 5 · 147 reviews

The semi-automatic AutoMet 250 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 features a simple to use membrane panel for consistent control over your surface finish. Combine with premium CarbiMet grinding paper and MetaDi diamond suspension fluid for an unparalleled surface finish.

Up to 10inMax Platen Diameter

1Hp [750W]Motor Power

Up to 1.5in / 40mmMax Specimen Diameter

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Buehler AutoMet 250 — semi-automatic grinder-polisher

AutoMet 250 Benefits

Built for simple operation, consistent process control, and high sample volume.

Simple Operation

Simple membrane control panel for ease of setting up your process
Easy to load sample holders
Utilize Apex S and Magnetic platen systems to change grinding discs and polishing cloths quickly
Rinse and Spin cleaning feature for the cloth and bowl

Process Flexibility and Consistency

Power head has single force mode for faster setup and central force mode for consistent removal and polishing
Automated polishing with up to 5 Burst diamond dispensing units for increased consistency and control over how much suspension is used
Flow rate controlled from the burst unit

Ideal for High Volume and Large Sample Size

Great for samples up to 1.5in / 40mm in diameter
Compatible with medium volume sample holders
1hp [0.75kW] motor for higher volume processing

Ordering Information

Contact Censico for current pricing and lead times.

AutoMet 250

Part Number	Voltage
49-7257	100–240VAC, 50–60Hz	Request a Quote →

Technical Specifications

Full specifications for the Buehler AutoMet 250 base machine and power head.

AutoMet 250
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, 9.6/4.8A @ 115/230VAC
Base & Head Power Usage	1.73kW, 15/7.5A @ 115/230VAC
Membrane Control Panel	Three 3-digit LED displays, 14 status LEDs; Units: Metric or Imperial
Base Sound Rating (1.5ft / 0.5m, no load)	59.5dB @ 100rpm
Base & Head Sound Rating	61.5dB @ 100/30rpm
Weight	170lbs [77kg]
Compliance	CE; EC applicable directives

AutoMet 250 — Power Head
Machine Power	0.156Hp [116W]
Speed	30–60rpm in 10rpm increments
Central Specimen Force	5–60lbs [20–260N]
Single Specimen Force	1–10lbs [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	70lbs [32kg]
Compliance	CE; EC applicable directives

Applications & Industries Served

The AutoMet 250 is used wherever labs need reliable, high-volume grinding and polishing with simple, consistent controls.

Typical Applications

High-volume grinding and polishing of metallographic samples
Production sample preparation environments
Failure analysis and root-cause investigation
Routine quality control sample preparation
Consistent surface finishing across large sample batches

Industries Served

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

Accessories & Compatible Consumables

Pair the AutoMet 250 with genuine Buehler consumables for an unparalleled surface finish.

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

View all grinding & polishing consumables →

Downloads

Product literature for the AutoMet 250.

📄 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 250 used for? ▾

The AutoMet 250 is a semi-automatic grinder-polisher compatible with platens up to 10in [254mm], designed for high-volume grinding and polishing of metallographic samples with a simple membrane control panel for consistent results.

What is the maximum platen size for the AutoMet 250? ▾

The AutoMet 250 supports 8in [203mm] and 10in [254mm] platens, using Apex S and Magnetic platen systems for quick changeovers between grinding discs and polishing cloths.

What sample sizes does the AutoMet 250 support? ▾

It supports samples up to 1.5in / 40mm in diameter, with central specimen force of 5-60lbs [20-260N] and single specimen force of 1-10lbs [5-45N], and is compatible with medium volume sample holders.

What's the difference between the AutoMet 250 and the EcoMet 30 Semi-Automatic? ▾

The AutoMet 250 has a larger 1Hp motor and a simple membrane control panel built for higher-volume environments and larger 10in platens, while the EcoMet 30 Semi-Automatic uses a touchscreen interface, supports platens up to 12in, and is aimed at medium-volume, dedicated-step workflows. Both are compatible with similar sample sizes.

Where can I buy a genuine Buehler AutoMet 250 in India? ▾

Censico International Pvt. Ltd. is Buehler's exclusive distribution partner for the Indian Subcontinent. You can request a quote for the AutoMet 250 directly through Censico, with pan-India delivery and technical support.

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