The SRF Series Solid Output Shaft Combined Helical Worm Gearbox is designed for industrial applications requiring extremely high reduction ratios, high torque output, and stable low-speed operation. By combining an inline helical gearbox with a helical worm gearbox, the unit achieves significantly larger reduction ratios than standard worm gear units while maintaining compact dimensions and smooth transmission performance. The solid output shaft design provides reliable power transmission and easy integration into industrial machinery. It is widely used in heavy-duty conveying systems, lifting equipment, mixing machinery, and bulk material handling applications. Output torque ranges up to 35,000 Nm, while input power capacities range from 0.18 kW to 160 kW depending on configuration.
| Item | Specification |
| Gear Type | Combined Helical + Helical Worm |
| Mounting Type | Foot Mounted / Flange Mounted |
| Input Type | IEC Motor Input / Shaft Input |
| Output Shaft Type | Solid Output Shaft |
| Housing Material | High-Strength Cast Iron |
| Gear Material | Alloy Steel / Bronze Worm Wheel |
| Gear Surface Hardness | HRC58–62 |
| Transmission Efficiency | Up to 92% |
| Ratio Range | 100 – 20,000+ |
| Output Torque | 500 – 35,000 Nm |
| Motor Power | 0.18 – 160 kW |
| Lubrication | Oil Bath Lubrication |
| Protection Class | IP55 (Optional IP65) |
| Ambient Temperature | -20°C to +40°C |
| Model | Ratio Range | Output Torque (Nm) | Motor Power (kW) |
| SRF37 | 100 – 500 | 800 | 0.18 – 3 |
| SRF47 | 150 – 800 | 1,500 | 0.37 – 5.5 |
| SRF57 | 200 – 1500 | 3,000 | 0.55 – 11 |
| SRF67 | 300 – 3000 | 6,500 | 1.1 – 22 |
| SRF77 | 500 – 5000 | 12,000 | 2.2 – 45 |
| SRF87 | 800 – 10,000 | 22,000 | 4 – 90 |
| SRF97 | 1000 – 20,000+ | 35,000 | 7.5 – 160 |
