
Genuine AirTAC slide cylinder, order code STWA20X75S from the STW range. The options this code selects are decoded below; series data follow the official AirTAC catalog.
The STWA20X75S is the Dia 20 plate-fixed slide cylinder with a 75 mm stroke, one step longer than the 50 mm version of the same bore. Its S suffix means the magnet comes built in, so a switch can be clamped anywhere along the body rail and read position across the full 75 mm travel. Twin rods carry the moving load between them, limiting rotation to 0.05 degrees on the Dia 20 size.
Running at 30 to 500 mm/s, the bore develops 201.1 N of theoretical force at 0.5 MPa with air filtered to 40 um. Ports are M5x0.8 and are provided in three sets, so tubing can be taken from whichever face fits the layout. Hydraulic shock absorbers at both ends slow the load into the stops, and the cylinder accepts 0.15 to 1.0 MPa over -20 to +70 C.
| Order code | STWA20X75S |
|---|---|
| Product | Slide Cylinder |
| Mounting | Plate fixed (STWA) |
| Bore | Ø20 mm |
| Stroke | 75 mm |
| Action | Double acting, twin rod |
|---|---|
| Cushion | Hydraulic shock absorber |
| Ø10 | 50.3 N at 0.5 MPa · port M5×0.8 |
| Ø16 | 122.5 N at 0.5 MPa · port M5×0.8 |
| Ø20 | 201.1 N at 0.5 MPa · port M5×0.8 |
| Ø25 | 289.8 N at 0.5 MPa · port PT1/8 |
| Ø32 | 490.1 N at 0.5 MPa · port PT1/8 |
| Fluid | Air (filtered by 40 µm element) |
| Operating pressure | 0.2-1.0 MPa (Ø10), 0.15-1.0 MPa (Ø16-32) |
| Proof pressure | 1.5 MPa (215 psi) |
| Temperature | -20 to +70 °C |
| Speed | 30-500 mm/s |
| Stroke tolerance | +1.0 / 0 mm (≤100), +1.5 / 0 mm (>100) |
| Anti-rotation | ±0.1° (Ø10), ±0.05° (Ø16, 20), ±0.03° (Ø25, 32) |
| Port | M5×0.8 (Ø10-20), PT1/8 (Ø25, 32) |
Source: AirTAC Products Catalog 2026A (PDF01-P0547..P0548), STW series specifications, theoretical force, strokes and ordering code.
Pick this code over STWA20X50S when the part must be transferred further, and over STWA20X100S when 75 mm is enough and a shorter envelope matters; all three share the 201.1 N force and M5x0.8 piping. The body-fixed STWB20X75S is the alternative if your frame clamps around the cylinder body rather than the end plate. Below 201.1 N requirements, STWA16X75S reduces the footprint at the same stroke.
Pushing parts onto a conveyor lane or gate-feeding a chute, where 75 mm of travel clears a lane edge without overshooting the next station.
Opening and closing a sliding shutter or fixture clamp on an indexing machine, with the longer stroke reaching past the fixture rim.
Sensing along a 75 mm window: the built-in magnet and rail allow the switch to be repositioned whenever the process pitch changes.
Dia 20 mm bore, 75 mm stroke, STWA plate-fixed mounting, built-in magnet. Theoretical force 201.1 N at 0.5 MPa, M5x0.8 ports, 30 to 500 mm/s speed, 0.15 to 1.0 MPa operating pressure, 1.5 MPa (215 psi) proof pressure, -20 to +70 C, anti-rotation 0.05 degrees, air filtered to 40 um.
For strokes up to 100 mm the tolerance is +1.0/0 mm, so the 75 mm dimension can run up to 76 mm. Because the S option builds the magnet in, magnetic switches slide along the rail to any position over the 75 mm travel; compatible switch selection should be confirmed from the datasheet.