
The AirTAC Airtac STA Single Acting Compact Guided Cylinder STA32X20B is a genuine single-acting COMPACT cylinder (single acting, pull type) with a Ø32mm bore and 20mm stroke. Air pulles the rod and an internal spring returns it, so one solenoid line drives the motion — ideal for short-stroke clamping and ejection in tight spaces.
The AirTAC STA32X20B is a compact single-acting pull-type cylinder where air retracts the rod and an internal spring extends it out. It yields 290.1 N of net pull at 0.5 MPa, reaching 428.3 N at 0.7 MPa. The short riveted body saves axial mounting depth where a round-body unit will not fit.
This specific SKU features a male M10x1.25 piston rod thread on a 12 mm rod. It uses a fixed NBR bumper to decelerate the stroke end rather than an adjustable cushion. With no piston magnet, it cannot accept reed or electronic switches.
| Model | Airtac STA Single Acting Compact Guided Cylinder STA32X20B |
|---|---|
| Series | STA compact single-acting cylinder |
| Bore size | Ø32 mm |
| Stroke | 20 mm |
| Acting type | Single acting, pull type |
| Port size | PT1/8 |
| Rod end thread | M6×1.0 female / M10×1.25 male (B) |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 500 mm/s |
| Cushion | Fixed NBR bumper |
| Max standard stroke | Up to 30 mm |
Specifications follow the official AirTAC SDA-family datasheet. Single-acting types start at 0.2 MPa (the spring must be overcome). Confirm against the product label before installation.
| Pressure | Pull force (net) |
|---|---|
| 0.5 MPa | 290 N |
| 0.7 MPa | 428 N |
These are NET output forces — the return-spring force is already deducted. Single-acting pull only; the spring performs the opposite stroke. Size with a safety margin.
| STA | Compact single acting, pull type cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×20 | Stroke length in mm (single-acting max 30 mm). |
| S | Built-in magnet for magnetic-switch sensing (omit = none). |
| B | Male-thread piston rod (omit = female thread). |
Thread: PT standard. SSA pushes out / spring returns; STA pulls in / spring extends. Related: SDA (double acting), SDAD (double rod), SDAJ (adjustable stroke).
Uses the 290.1 N net pull to draw a diverter gate inward against belt vibration, letting the spring push it back open when air drops.
Pulls a hold-down arm out of the way during box indexing, then relies on the internal spring to snap the arm back for flap folding.
Withdraws a 12 mm locating pin from a fixture using the male M10x1.25 thread, returning to the extended rest position upon air release.
Size both ways against this 32 mm bore: the STA25 provides 177.7 N net pull at 0.5 MPa, while the STA40 offers 445.1 N. This STA32X20B yields a safe working load of roughly 174 N, about 60 percent of its 290.1 N rating, allowing a vertical lift of 14.8 kg with a 2:1 margin.
The 20 mm stroke sits safely under the 30 mm ceiling. Because the spring extends the rod on air loss, it will not hold a mid-stroke load without live pressure. Confirm the PT1/8 port, the male M10x1.25 rod thread, and that operating pressure is 0.2-1.0 MPa.
Quick checklist
It delivers 290.1 N net pull at 0.5 MPa and 428.3 N at 0.7 MPa. Operating pressure is 0.2-1.0 MPa, requiring at least 0.2 MPa to overcome the internal return spring.
No. This specific SKU lacks the -S option, meaning it has no piston magnet and cannot accept reed or electronic switches. You must select the STA32X20BS variant for sensing capabilities.
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