The double station roller jar mill runs two jars at once; the roller spacing is adjusted by handwheel so that jars of different diameters can be used safely and the jar is prevented from moving off track.
| Model | GMS3-2 | GMS5-2 | GMS10-2 | GMS20-2 | GMS30-2 |
| Jar Capacity | 500 ml-3 L | 500 ml-5 L | 500 ml-10 L | 500 ml-20 L | 500 ml-30 L |
| Roller Diameter × Length | φ58×(250×2) | φ58×(290×2) | φ68×(349×1) | φ78×(394×1) | φ78×(425×1) |
| Power | 0.75 kW | 0.75 kW | 1.1 kW | 1.5 kW | 2.2 kW |
| Adjusted Space By Hand | 52-210 mm | 67-280 mm | 67-230 mm | 30-320 mm | 35-360 mm |
| Diameter of Jar | φ50-φ200 | φ70-φ260 | φ60-φ280 | φ60-φ320 | φ60-φ360 |
| Layers / Stations | 1 / 2 | 1 / 2 | 1 / 2 | 1 / 2 | 1 / 2 |
| Roller Speed | 5-1000 | 5-1000 | 5-1200 | 5-720 | 5-720 |
| Roller Nos | 2 | 2 | 3 | 3 | 3 |
| Transmission Mode | Belt | Belt | Belt | Belt | Belt |
| Voltage | 220/50 | 220/50 | 220/50 | 380/50 | 380/50 |