Japan, Seishin
Seishin SV Series Air-Knocker

Made in Japan
Manufacturer: Seishin
Model: SV Series: SV-30, SV-40, SV-60, SV-80
Air knocker SV type operation principle

- At rest, the piston is in close contact with the pipe by the return spring.
- When compressed air is supplied, air is stored in the accumulator.
- The valve for exhausting the supply of compressed air is opened, and the air stored in the pressure accumulating chamber extrudes the piston at once by way of the pipe
- When the air in the accumulator chamber runs out, the return spring returns the piston to its initial position
Part drawing of Air knocker SV type and part names

- Head Flange
- Bolt with Hexagonal Hole
- Washer
- O ring for Head Flange
- Bebel valve
- Throat pipe
- Piton
- Point Bush
- Return Spring
- Spring Washer
- Hard Lock Nut
- Washer
- Main Body
- Base Bolt
- Base Plate
Specification

| Specification | Model | SV-30 | SV-40 | SV-60 | SV-80 |
| Pressure (MPa) | 0.2~0.6 | 0.2~0.6 | 0.2~0.6 | 0.2~0.6 | |
| Air consumption (l/time) | 0.023 | 0.06 | 0.129 | 0.277 | |
| Impact Power (Ns) | 0.7~1.2 | 2.4~4.1 | 6.2~10.7 | 16.2~27.9 | |
| Body Weight (kg) | 1.0 | 2.9 | 7.6 | 7.9 | |
| Total Weight (kg) | 1 | 2.9 | 7.8 | 11.5 | |
| Body Material | Alminium Casting | Alminium Casting | Alminium Casting | Alminium Casting | |
| Dimension | øA | 65 | 90 | 120 | 139 |
| B | 32 | 40 | 38 | 54 | |
| øC | 70 | 95 | 140 | 150 | |
| D | 10 | 16 | 16 | 18 | |
| E | 4 | 4 | 4 | 4 | |
| øF | 9 | 11 | 15 | 17 | |
| G | 1/8 | 1/4 | 1/4 | 3/8 | |
| H | 128 | 178 | 218 | 264 | |
| øL P.C.D | 55 | 70 | 110 | 120 | |
| S | 6 | 12 | 12 | 14 | |
| T | 40 | 90 | 100 | 10 | |
| øY | 27.2 | 34.0 | 76.3 | 76.3 | |
| R | 1/4 | 1/4 | 1/4 | 3/8 |
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