Industrial Automation
China Gearbox NVI Series for Large Tonnage Injection Molding Machines - Top Suppliers & Factory Solutions
Model Representation
Products Parameters
① The rated torque values listed below are calculated using a coefficient of 1. When calculating maximum usable horsepower, please consider a safety factor of 1.7. See Appendix 1 for details.
② Weight may vary depending on the reducer ratio and configuration.
③ The oil quantity may vary depending on the ratio, gear oil viscosity, and other factors. Add the appropriate amount of oil based on the actual oil level gauge. For oil grades, see Appendix 2.
| Size | Ratio (i) | Torque Mn (Nm) ① | A (mm) | B (mm) | C (mm) | D (mm) | E (mm) | Weight (KG) ② | Oil (L) ③ |
|---|---|---|---|---|---|---|---|---|---|
| 160 | 8 | 5590 | 655 | 385 | 180 | 266 | 320 | 160 | 18 |
| 10 | 6520 | ||||||||
| 12.5 | 6600 | ||||||||
| 14 | 6750 | ||||||||
| 16 | 6800 | ||||||||
| 180 | 10 | 9300 | 732 | 432 | 200 | 296 | 360 | 230 | 26 |
| 12.5 | 9500 | ||||||||
| 14 | 9700 | ||||||||
| 16 | 9800 | ||||||||
| 18 | 9850 | ||||||||
| 200 | 10 | 13200 | 810 | 485 | 225 | 330 | 400 | 362 | 45 |
| 12.5 | 13240 | ||||||||
| 16 | 13300 | ||||||||
| 18 | 13380 | ||||||||
| 20 | 13500 | ||||||||
| 225 | 10 | 17600 | 907 | 545 | 250 | 360 | 450 | 665 | 66 |
| 12.5 | 18200 | ||||||||
| 16 | 18300 | ||||||||
| 18 | 18350 | ||||||||
| 20 | 18280 | ||||||||
| 250 | 16 | 33600 | 1020 | 570 | 310 | 410 | 600 | 960 | 70 |
| 20 | 34100 | ||||||||
| 300 | 16 | 45400 | 1160 | 685 | 350 | 450 | 670 | 1200 | 105 |
| 17 | 46800 | ||||||||
| 20 | 47400 | ||||||||
| 22 | 46800 | ||||||||
| 360 | 25 | 74500 | 1448 | 867 | 400 | 570 | 710 | 2200 | 160 |
| 31.5 | 76900 |
| Appendix 1: Load Service Factor (SF) | ||||||||||||
| Daily running time | 4 hours | 8 hours | 16 hours | 24 hours | ||||||||
| Operations per hour | <10 | 100-200 | >200 | <10 | 100-200 | >200 | <10 | 100-200 | >200 | <10 | 100-200 | >200 |
| Ⅰ | 0.7 | 0.8 | 1 | 0.9 | 1 | 1.1 | 1 | 1.1 | 1.2 | 1.2 | 1.3 | 1.5 |
| Ⅱ | 1 | 1.1 | 1.3 | 1.1 | 1.2 | 1.3 | 1.2 | 1.4 | 1.5 | 1.4 | 1.5 | 1.6 |
| Ⅲ | 1.3 | 1.4 | 1.5 | 1.4 | 1.5 | 1.6 | 1.5 | 1.6 | 1.7 | 1.6 | 1.7 | 1.8 |
| Ⅰ：Even load | ||||||||||||
| Ⅱ：Uneven load, medium masses | ||||||||||||
| Ⅲ：Uneven load, greater masses | ||||||||||||
| The load Service factor fB refers to the various operating conditions of the gear; such as type of load, running time, operation frequency, output speed etc., and is therefore imperative when choosing the gear size. Based on our experience, a load factor fB=1.7 at 24-hour operation must be considered when choosing the gear. | ||||||||||||
| Appendix 2: Recommended Oil Types | |||||
| Type of lubricant | Application | OIL | AMBIENT TEMPERATURE | ||
| Mineral oil | Reduction gearboxes | ISOVG220EP | -15°C ~ +15°C | ||
| ISOVG320EP | -10°C ~ +40°C | ||||
| Corresponding Lubricants | |||||
| Type | Brand-name | Type | Brand-name | ||
| MELLANAOILBLASIA | IPAGIP | MOBILGEAR600XPOMALAEP | MOBILSHELL | ||
Cooling Method: Built in and external
Built-in Cooling
Use a copper plate with better thermal conductivity to separate the oil cavity inside the reducer, and add a cover for the cooling water circulation pipeline externally to pass cooling water to better reduce the temperature rise of the reducer during operation.
| Applicable models | 160 | 180 | 200 | 225 |
External Cooling
The motor pump and plate heat exchanger can reduce the amount of oil in the internal oil chamber, reduce the temperature rise, and reduce the weight of the reducer itself.
| Applicable models | 250 | 300 | 360 |
Main Features
In terms of energy conservation, the reducer employs precision helical gear meshing and high transmission efficiency (over 95%), significantly reducing energy loss during power transmission. Compared to conventional hydraulic motors, it helps reduce the overall energy consumption of injection molding machines by 20%-30%. With long-term use, it substantially cuts electricity costs for enterprises, aligning with the current industrial trend of energy efficiency and consumption reduction.
The NVI gearbox reducer delivers precise transmission ratios and high torque output. Equipped with an intelligent control system, it ensures accurate and controllable mold opening/closing and injection actions, minimizing process deviations. Its rapid response capability shortens the injection cycle, improving production efficiency by 10%-15%. This enables enterprises to produce more qualified products within the same timeframe, enhancing their competitiveness.
Mounting Arrangement
Shaft Assembly Code
The design process of gearbox
From Prototype to Application
Product Application
Frequently Asked Questions (FAQ)
The NVI gearbox reducer utilizes precision helical gear meshing with a transmission efficiency exceeding 95%. This reduces the overall energy consumption of injection molding machines by 20% to 30% compared to traditional hydraulic motors.
The rated torque values are based on a nominal coefficient of 1. For sizing calculations under continuous 24-hour industrial operation, a safety factor (Load Service Factor fB) of 1.7 must be applied as outlined in Appendix 1.
Built-in cooling uses high-conductivity copper plates and internal water circulation channels for model sizes 160 to 225. External cooling uses an integrated motor pump and plate heat exchanger for larger model sizes (250, 300, and 360) to minimize oil volume and total reducer weight.
For ambient temperatures between -15°C and +15°C, ISOVG220EP mineral oil is recommended. For operating temperatures between -10°C and +40°C, ISOVG320EP is recommended. Approved lubricant brands include IP AGIP (MELLANA OIL BLASIA) and MOBIL / SHELL (MOBILGEAR 600 XP / OMALA EP).
With precise transmission ratios, high torque output, and fast servo response, it ensures accurate mold opening/closing and injection movements, reducing process cycle times and increasing overall production output by 10% to 15%.
Yes. As demonstrated in application cases (such as Chen Hsong IMM retrofits), these gearboxes are engineered with versatile mounting arrangements and modular shaft codes to easily replace conventional hydraulic drive systems.