There are mainly two types of coffee grinders on the market: with flat burrs and with conical burrs. We can’t simply say who is good and who is bad when it comes to conical or flat grinding.
Most professional coffee drinkers feel that flat burrs give a more consistent grind, which results in a cleaner cup. Conical burrs, on the other hand, yield more fines and produce a cup with more body feel.
Conical Burrs Vs. Flat Burrs |
Performance Comparison |
Conical Burrs |
Flat Burrs |
Grind Consistency |
|
Win |
Grinder Waste |
Win |
|
Price |
Win |
|
Noise |
Win |
|
Heat |
Win |
|
Properties of ceramic coffee burr
Our burrs for coffee grinders are made of high purity alumina (95%/99%/99.5%), an advanced ceramic that will never rust, providing long-lasting performance.
Mechanical Property |
Ceramic Material |
99.5%
Al2O3 |
99%
Al2O3 |
95%
Al2O3 |
Density (g/cm3) |
≥3.90 |
≥3.85 |
≥3.65 |
Water absorption (%) |
0 |
0 |
0 |
Hardness (HV) |
1700 |
1700 |
1500 |
Flexural strength (Mpa) |
≥379 |
≥338 |
≥320 |
Compressive strength ( Mpa) |
≥2240 |
≥2240 |
≥2000 |
Fracture toughness (Mpam1/2) |
4-5 |
4-5 |
3-4 |
Our strengths
1. The burr can be customized in different sizes, suitable for different design styles of grinders.
2. With sufficient stock for all standard types, and with flexible delivery.
3. Stable quality, consistent product specifications for each batch.
4. We have a variety of coffee grinder burrs, conical and flat, manual and electric, which can meet your different application scenarios.