GVA Chongqing Gearbox
Chongqing GVA series double input, single stage reduction gears connect two engines to a single propeller shaft. The gears are available with a horizontal offset between the input shafts and output shaft to allow two (diesel) engines to be connected. Adjustable propellers are used to achieve forward and reverse functions.
GVA series gearbox ratio range is 2-6. There are 8 specifications for B type and C type (enhanced type), a total of 16 models.
| Gearbox Model | Input Speed (rpm) | Nominal Ratio | Power Factor (kW/rpm) |
| GVA1000B | 300-1800 | 2-6 | 0.96-3.10 |
| GVA1000C | 1.29-4.10 | ||
| GVA1120B | 300-1800 | 2-6 | 1.36-4.26 |
| GVA1120C | 1.67-5.70 | ||
| GVA1250B | 300-1800 | 2-6 | 1.75-5.70 |
| GVA1250C | 2.42-7.60 | ||
| GVA1400B | 250-1350 | 2-6 | 2.60-8.30 |
| GVA1400C | 3.10-11.00 | ||
| GVA1500B | 250-1350 | 2-6 | 3.20-9.90 |
| GVA1500C | 4.20-13.20 | ||
| GVA1700B | 250-1350 | 2-6 | 4.50-14.30 |
| GVA1700C | 5.90-18.80 | ||
| GVA1875B | 200-1050 | 2-6 | 5.40-19.50 |
| GVA1875C | 8.20-26.00 | ||
| GVA2050B | 188-900 | 2.5-6 | 8.00-21.00 |
| GVA2050C | 10.70-27.00 |