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| Brand | Retsch |
|---|---|
| Origin | Germany |
| Model | PM 400 |
| Instrument Type | Planetary Ball Mill |
| Sample Suitability | Hard, brittle, fibrous, soft to extremely hard materials |
| Feed Size | < 10 mm |
| Final Particle Size | < 0.1 µm (colloidal grinding) |
| Batch Volume | up to 4 × 220 mL or 8 × 20 mL |
| Grinding Platforms | 4 (standard), optional 2-platform configuration for mechanical alloying |
| Sun Wheel Diameter | 300 mm |
| Sun Wheel Speed | 30–400 rpm |
| Speed Ratio Options | 1:−2, 1:−2.5, 1:−3 |
| Drive Power | 1.5 kW |
| Net Weight | ~290 kg |
| Dimensions (W×H×D) | 836 × 1220 (1900) × 780 mm |
| Protection Class | IP 30 |
| Sound Pressure Level | LpAeq < 85 dB(A) |
| Compliance | CE certified |
| Grinding Jar Materials | Hardened steel, stainless steel, tungsten carbide, agate, sintered corundum, zirconium oxide |
| Jar Volumes | 12–500 mL |
| Programmable Parameters | 10 stored methods |
| Interface | RS 232 / RS 485 |
| Energy Input Measurement | Yes |
| Cooling | Automatic grinding chamber ventilation system |
| Brand | LY |
|---|---|
| Origin | Beijing, China |
| Model | WD-9419A |
| Frequency Range | 30–70 Hz |
| Acceleration Time | ≤2 s |
| Deceleration Time | ≤2 s |
| Sample Capacity | 32×2 mL / 24×2 mL / 48×2 mL / 64×2 mL / 96×2 mL / 24×5 mL / 8×15 mL / 4×25 mL / 2×50 mL |
| Grinding Ball Diameter | 0.1–30 mm |
| Grinding Media Materials | Stainless Steel, Chrome Steel, Zirconia, Tungsten Carbide, Quartz Sand |
| Adapter Materials | PTFE, Alloy Steel, High-Strength Aluminum Alloy |
| Final Particle Size | ~5 µm |
| Cooling Mode | Optional Cryogenic or Ambient-Temperature Operation |
| Power Supply | AC 100–120 V / 200–240 V, 50/60 Hz |
| Dimensions (W×D×H) | 460 × 410 × 520 mm |
| Weight | 52 kg |
| Noise Level | <55 dB(A) |
| Safety Features | Emergency Stop Button, Lid Interlock, Overload Protection |
| Brand | JU CHUANG ENVIRONMENTAL |
|---|---|
| Origin | Shandong, China |
| Model | JC-QMJ-5 |
| Instrument Type | Roller Ball Mill |
| Sample Applicability | Hard Materials |
| Feed Size | ≤10 mm |
| Final Particle Size | 1–100 µm |
| Batch Capacity | 5 L |
| Drive System | Variable-Frequency Motor with Rubber Roller Transmission |
| Speed Range | 60–570 rpm |
| Power | 370 W / 220 V / 50 Hz |
| Timer Range | 0–999 min |
| Dimensions (L×W×H) | 730 × 415 × 260 mm |
| Net Weight | ~32 kg |
| Grinding Jar Compatibility | 0.5–5 L |
| Jar & Media Materials | Stainless Steel, Alumina, Zirconia, Agate, Polyurethane, Nylon, Tungsten Carbide |
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