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You could see the anotations between three of them before making a selection.



When building a high performance coffee grinder, burr geometry and material coating directly determine grinding consistency, heat generation, service life and final cup flavor. Our 64 mm 12th flat burr uses the same core geometry for all three variants — Original SUS420J2, TiN Gold coating, and TiCN Gray Black coating — giving users flexible choices for home hobby, heavy use home and commercial cafe environments.

Here provide clear, step-by-step instructions covering safety precautions, disassembly, cleaning, replacement, and reassembly. The user specified "44.6mm" which matches the conical burr size found in many Breville grinders



While specific steps can vary slightly by model (e.g., Barista Express, Pro, Dual Boiler), the process for replacing the 44.6mm conical burr set (the upper and lower burrs) is generally the same for most Breville espresso machines.



Important: Before starting, unplug the machine. You will likely need a flathead screwdriver, a Phillips head screwdriver, and a 9mm or 10mm wrench (or socket).

Are you ready to elevate your coffee game? Dive into "A Comprehensive Guide to Coffee Grinder Flat Burrs" to discover why flat burrs might be the secret to achieving that perfect brew. Whether you're a curious beginner or a seasoned barista, this guide will unravel the mysteries of precision grinding, consistent flavor, and enhanced aroma, taking your coffee experience to new heights. Make every cup unforgettable with insights that will delight your taste buds!

Flat burrs are favored for their uniform particle size and ability to fully release the layered flavors of coffee, making them widely used in commercial and high-end home coffee equipment. Flat burrs of different sizes (75mm, 80mm, 83mm, 90mm, 98mm) vary significantly in core indicators such as grinding efficiency, capacity, and stability, catering to scenarios ranging from small and medium-sized cafes to large-scale industrial production. Here is a detailed breakdown.

The diameter of flat burrs in coffee grinders directly determines grinding efficiency, particle uniformity, and application scenarios — smaller burrs are more suitable for small-batch, precision-controlled grinding, while larger burrs tend to handle high-load, large-scale operations. The "shear grinding" characteristic of flat burrs exhibits differentiated advantages across different sizes: small-sized burrs focus on fineness, while large-sized burrs prioritize stability and productivity. Below is a detailed analysis of five mainstream sizes: 40mm, 54mm, 60mm, 64mm, and 65mm.