Dry Grinder
A dry grinder is a precision-engineered pulverizing system designed for mechanical reduction of bulk materials (coal, grains, spices, plastics) into controlled particle sizes (50–500 µm) through high-impact grinding. Equipped with hardened steel blades or tungsten carbide grinding chambers, it achieves particle uniformity via adjustable rotor speeds (1,000–20,000 RPM) and integrated sieving mechanisms.
Multi-Material Compatibility: Processes materials with moisture content ≤8% and hardness ≤6 Mohs.
Variable-Speed Drive: 3-phase motors (2.2–15 kW) with VFD control for torque optimization.
Thermal Management: Air-cooled bearings and temperature sensors (range: -10°C to 150°C) prevent overheating during continuous operation.
Technical specification
| Model | FG-180 | FG-250 | FG-320 | FG-400 | FG-500 | FG-600 |
|---|---|---|---|---|---|---|
| Voltage | 220V/380V | 380V | 380V | 380V | 380V | 380V |
| Capacity (kg/h) | 40-120 | 50-200 | 100-300 | 300-800 | 400-1000 | 500-1500 |
| Speed (rpm) | 4,200 | 4,500 | 4,200 | 3,400 | 3,600 | 2,800 |
| Fineness (mesh) | 60-150 | 10-150 | 10-150 | 10-150 | 10-120 | 10-120 |
| Power (kW) | 2.2 | 5.5 | 7.5 | 12 | 15 | 22 |
| Weight (kg) | 90 | 200 | 250 | 440 | 500 | 680 |
| Dimension (mm) | 700×480×1000 | 750×600×1350 | 1100×700×1250 | 1200×950×1300 | 1300×1000×1380 | 1400×1350×1500 |
Video
Maintenance Protocol
Intervals assume 8-hour daily operation and ambient temperatures ≤40°C. Adjustments required for high-moisture (>8%) or corrosive materials.
Weekly
Inspect blade sharpness (replace if edge radius exceeds 0.1 mm) and purge residual material.
Lubricate bearings with NSF H1-grade grease; calibrate motor amperage to ±5% of rated load.
Monthly
Conduct vibration analysis (max. 4.5 mm/s RMS) to detect rotor imbalance.
Annually
Replace wear parts (sieves, gaskets) and pressure-test seals at 1.3x operating PSI.
Common Failures & Solutions
| Issue | Root Cause | Resolution |
|---|---|---|
| Overheating | Clogged air vents | Clean filters; reduce feed rate |
| Irregular particle size | Worn blades/sieves | Replace blades (every 300–500 hrs) and recalibrate sieve tension |
| Excessive noise | Bearing degradation | Apply high-temperature grease; check alignment |
Component Replacement Intervals
Grinding Hammers: Replace every 800–1500 operational hours, depending on material abrasiveness (e.g., tungsten carbide blades for minerals >5 Mohs).
Sieves/Screens: Replace mesh grids (stainless steel 304) every 400–600 hours or when aperture deformation exceeds ±10% of nominal size.
Bearings: Lubricate weekly; replace spindle bearings after 2,000 hours or if vibration exceeds 4.5 mm/s.
Authentic feedback
Customer voices that share their experience
Taylor S.
Amazing machine
The Today Machine dry pulverizer has revolutionized the way we process our materials. It’s efficient, reliable, and produces consistent results every time. We’ve been able to improve our production process and reduce our costs, thanks to this amazing machine.
Blake A.
Hands down the best
I’ve used several pulverizers over the years, but the Today Machine dry grinder is hands down the best I’ve ever used. It operates with remarkable efficiency and yields reliable outcomes consistently without fail. I’ve been able to increase my production while reducing my operating costs thanks to this machine.
Robin M.
Built to last
The Today Machine pulverizing machine is a real workhorse. It’s built to last and can handle even the toughest materials with ease. This exceptional machine has enabled us to revolutionize our production process and achieve unprecedented levels of output.