Features: Precision planetary gear structure, strong and durable.
Uses: For quick bolt installation and removal.
Features: Precision planetary gear structure, strong and durable.
Uses: For quick bolt installation and removal.
Torque multipliers are widely used for quick installation and disassembly of bolts, without power and gas source. It is very convenient to use on site. You can output a large torque accurately, with a small torque input. It is widely used in petrochemical industry, railway construction and bridge construction.


| Model | ΦA | ΦB | ΦC | ΦD | H | H1 | H2 | H3 | H4 | H5 | H6 | L | L1 | L2 | RA | RB | RC | S |
| KET-FDB-20Z | 50 | 68 | 82 | 34 | 147 | 22 | 56.5 | 15 | 25 | 14 | 30 | 105 | 65 | 37 | 33 | 5 | 10 | 1″ |
| KET-FDB-35Z | 53 | 77 | 98 | 34 | 163 | 22 | 69 | 15 | 25 | 16 | 36 | 120 | 55 | 43 | 36 | 5 | 10 | 1″ |
| KET-FDB-55Z | 52 | 80 | 115 | 50 | 199 | 26 | 86.5 | 13 | 38 | 16 | 40 | 137 | 87 | 43.5 | 45 | 8 | 15 | 1.5″ |
| KET-FDB-75Z | 64 | 92 | 127 | 50 | 215 | 26 | 97 | 12 | 38 | 20 | 44 | 146 | 91 | 45 | 48 | 25 | 15 | 1.5″ |
| KET-FDB-100Z | 78 | 106 | 141 | 50 | 238 | 28 | 90 | 12 | 40 | 22 | 50 | 164 | 102 | 50.5 | 53 | 10 | 15 | 1.5″ |
| Model | Bolt Diameter | Nut Across Flat | Input Square | Output Square | Torque | Torque Ratio | Transmission Ratio | Weight(kg) |
| KET-FDB-10 | M20-30 | S30-46 | 1/2" | 1" | 1000 | 1:5 | 1:5.5 | 2.4 |
| KET-FDB-20 | M22-35 | S32-55 | 1/2" | 1" | 2000 | 1:13.6 | 1:16 | 3.5 |
| KET-FDB-35 | M30-45 | S46-70 | 1/2" | 1" | 3500 | 1:17.5 | 1:20.25 | 5.0 |
| KET-FDB-55 | M42-60 | S55-80 | 1/2" | 1 1/2" | 5500 | 1:20.5 | 1:25.4 | 8.7 |
| KET-FDB-75 | M52-72 | S65-90 | 1/2" | 1 1/2" | 7500 | 1:23.7 | 1:29.33 | 11.7 |
| KET-FDB-100 | M52-72 | S80-105 | 1/2" | 1 1/2" | 10000 | 1:30.5 | 1:37.71 | 15.2 |
| KET-FDB-150 | M60-85 | S80-120 | 1/2" | 2 1/2" | 15000 | 1:50 | 1:70.19 | 24.1 |
| KET-FDB-200 | M72-100 | S105-145 | 1/2" | 2 1/2" | 20000 | 1:72 | 1:101.62 | 27.8 |
| Model | Bolt Diameter | Nut Across Flat | Input Square | Output Square | Torque(Nm) | Torque Ratio | Transmission Ratio | Weight(kg) |
| KET-FDB-20 | M20-30 | S30-46 | 1/2" | 1" | 2000 | 1:13.5 | 1:18.3 | 2.3 |
| KET-FDB-35 | M22-35 | S32-55 | 1/2" | 1" | 3500 | 1:16 | 1:20.25 | 4.0 |
| KET-FDB-55 | M30-45 | S46-70 | 1/2" | 1" | 5500 | 1:19.3 | 1:25.4 | 6.5 |
| KET-FDB-75 | M42-60 | S55-80 | 1/2" | 1 1/2" | 7500 | 1:22.7 | 1:29.33 | 8.3 |