FF Series Helical Gearbox with Flange Mounted Solid Shaft Output
FF series helical gearbox is one type of flange mounted solid shaft output F series helical gear reducer. FF series helical gearboxes are made of rigid cast iron housing, and the gear is made of high-quality steel. The surface is subjected to high-frequency heat treatment and precision machining to ensure the parallelism of the shaft and the accuracy of positioning. It has the advantages of high precision, high efficiency, large transmission torque, and high reliability. It is widely used in many low-speed drive mechanical equipment and is very suitable for use in the case of limited installation space.
| Product name: | FF series solid shaft helical gearbox |
| Model: | FF37/47/57/67/77/87/97/107/127/157 |
| Mounting ways: | Foot mounted, flange mounted or shaft mounted |
| Input ways: | Motor input, AM (IEC) flange input, and shaft input |
| Output way: | Solid shaft output, hollow shaft output, output with large flange, output with small flange |
| Efficiency: | 96% for basic two-stage, 94% for three-stage |
| Housing material: | HT250 high-strength cast iron |
| Gear material: | 20CrMnTi |
| Surface hardness of gears: | HRC58-62 |
| Input/Output shaft: | 40Cr steel |
| Heat treatment: | Carburizing and quenching |
| Bearing: | C&U or another brand |
| Oil seal: | NAK or another brand |
| Lubricating oil: | Gear oil |
| Packing: | Plywood case |
| Input power and permissible torque chart | ||||||||||
| Size | 37 | 47 | 57 | 67 | 77 | 87 | 97 | 107 | 127 | 157 |
| Structure | F FA FF FAF FAZ | |||||||||
| Input power(kW) | 0.18-3.0 | 0.18-3.0 | 0.18-5.5 | 0.18-5.5 | 0.37-11 | 0.75-22 | 1.1-30 | 2.2-45 | 7.5-90 | 11-200 |
| Ralio | 3.81-128.51 | 5.06-189.39 | 5.18-199.70 | 4.21-228.99 | 4.30-281.71 | 4.12-270.68 | 4.68-280.76 | 6.20-254.76 | 4.63-172.17 | 11.92-267.43 |
| Permissibletorque(N.M) | 200 | 400 | 600 | 820 | 1500 | 3000 | 4300 | 7840 | 12000 | 18000 |
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Input Configurations | Direct motor coupled |
With IEC B5/B14 motor flange | |
With IEC B5/B14 motor mounted | |
With solid input shaft | |
Output Configurations | Solid output shaft |
Solid output shaft with flange | |
Hollow output shaft | |
Hollow output shaft and flange | |
Variants of the Parallel Shaft Helical Gear Unit Series F / FF / FA / FAF | Foot- or flange-mounted |
B5 or B14 flange-mounted | |
Solid shaft or hollow shaft | |
Hollow shaft with key connection, shrink disk, splined hollow shaft, or Torque Arm |




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Luotuo Industrial Area, Zhenhai District, Ningbo City, China
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