Reference models
| SDA | 50 x 50 | – | S | B |
| Series code | Cylinder inner diameter x | Magnet code | Thread of piston rod | |
| SDA: Basic type | traveling distance | Nil: without | Nil: inner thread | |
| SDAD: double-axial type | S: with | B: Outer thread | ||
| SDAJ: Double shaft adjustable type | N: No thread | |||
| SSA: Preshrink | ||||
| STA: Pre-extend | ||||
| SDAT: Multi position | ||||
| SDAW: Double shaft repeated move multi position |
