Z Series Four Rope Grab Bucket Technology Parameters:
| Model | Volume (m3) | The rate of material (t/m3) | The Max capture weight (t) | The Dia.of pulley (mm) | The Dia.Of steel rope (mm) | Grab self weight (t) | Using crane ton(t) | Remark |
| Z20-9 | 0.75 | 0.6-1.2 | 0.9 | 250 | 11～15 | 1.35 | 3 | |
| Z5 | 1 | 2.1-3 | 3.1-3 | 300 | 14～16 | 2.54 | 5 | |
| Z15 | 1.5 | 1.1-2.0 | 1.65-3 | 300 | 14～16 | 2.3 | 5 | |
| Z25 | 2.5 | 0.6-1 | 1.5-2.5 | 300 | 14～16 | 2.5 | 5 | |
| ZS30 | 3 | 1.1-2 | 3.3-6 | 350 | 18～20 | 4.7 | 10 | |
| ZS20 | 2 | 2.1-3 | 4.2-6 | 350 | 18～20 | 4.8 | 10 | Filler |
| ZK20 | 2.5 | 2.5-3 | 7.5 | 500 | 23.5 | 8.3 | 16 | |
| ZK30 | 3 | 2.1-3 | 6.3-9 | 500 | 23.5 | 7.3 | 16 | |
| ZT442 | 4 | 2.1-2.5 | 8.4-10 | 570 | 28 | 9.4 | 20 |