AirTAC STA20 Single-Acting Pull Compact Cylinder, 20 mm Bore
Every AirTAC STA20 configuration on one page: 24 stock order codes with strokes from 5 to 30 mm, magnet and male-rod versions, from $21.62. Pick a stroke and version to see the exact order code and price.
Basic (no mounting)
This combination is not a stock order code. Request a quote and we will confirm availability and price.
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the AirTAC STA20
The AirTAC STA20 is a single-acting, spring-return thin compact cylinder (pull type) with a 20 mm bore and an 8 mm piston rod. Compressed air retracts the rod and a built-in spring extends it when the air is released, so the rod rests extended; only one port takes air. Catalog output with the spring force already deducted is 108.9 N pull at 0.5 MPa and 161.7 N at 0.7 MPa. The spring stroke has no air behind it, so it must not carry a load.
All STA20 versions share M5 air ports, an M4×0.7 female rod thread (B versions have a M6×1.0 male rod end) and rubber bumpers at both ends. The cylinder runs on filtered air between 0.2 and 1.0 MPa (proof 1.5 MPa), from -20 to +70 °C, at 50 to 500 mm/s. This page lists 24 stock order codes with strokes from 5 to 30 mm; catalog standard strokes run up to 30 mm.
STA20 Technical Specifications
| Bore size | Ø20 mm |
|---|---|
| Stock strokes | 5 – 30 mm |
| Catalog standard stroke | up to 30 mm (longer on request) |
| Acting type | Single acting, spring return (pull) |
| Port size | M5 |
| Piston rod / rod thread | Ø8 mm / M4×0.7 female; M6×1.0 male (B) |
| Fluid | Air (filtered by 40 µm 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 | Rubber bumper at both ends |
Source: AirTAC Products Catalog 2026A (PDF01-P0492/P0493), SDA (STA) series ordering code and specifications.
Catalog output force (Ø20 mm)
| Pressure | Pull (spring deducted) |
|---|---|
| 0.5 MPa | 108.9 N |
| 0.7 MPa | 161.7 N |
AirTAC catalog values for the single-acting pull type: air force on the bore minus the Ø8 mm rod less the return-spring force. The spring stroke delivers no rated force.
How the STA20 Order Code Is Built
| STA20 | Series and bore (20 mm) |
|---|---|
| X100 | Stroke in mm |
| S | Built-in magnet for position sensors (blank = none) |
| B | Male threaded rod end (blank = female) |
| - | Mounting: basic only |
All AirTAC STA20 Order Codes (24)
Each order code links to its own datasheet page. Use Select to load it into the configurator above.
| Order code | Stroke (mm) | Mounting | Magnet · Rod end | Price | Select |
|---|---|---|---|---|---|
| STA20X5 | 5 mm | Basic (no mounting) | - · female rod | $21.62 | |
| STA20X5B | 5 mm | Basic (no mounting) | - · male rod (B) | $21.62 | |
| STA20X5S | 5 mm | Basic (no mounting) | S · female rod | $25.81 | |
| STA20X5SB | 5 mm | Basic (no mounting) | S · male rod (B) | $25.81 | |
| STA20X10 | 10 mm | Basic (no mounting) | - · female rod | $22.09 | |
| STA20X10B | 10 mm | Basic (no mounting) | - · male rod (B) | $22.09 | |
| STA20X10S | 10 mm | Basic (no mounting) | S · female rod | $26.48 | |
| STA20X10SB | 10 mm | Basic (no mounting) | S · male rod (B) | $26.48 | |
| STA20X15 | 15 mm | Basic (no mounting) | - · female rod | $23.02 | |
| STA20X15B | 15 mm | Basic (no mounting) | - · male rod (B) | $23.02 | |
| STA20X15S | 15 mm | Basic (no mounting) | S · female rod | $27.21 | |
| STA20X15SB | 15 mm | Basic (no mounting) | S · male rod (B) | $27.21 | |
| STA20X20 | 20 mm | Basic (no mounting) | - · female rod | $23.69 | |
| STA20X20B | 20 mm | Basic (no mounting) | - · male rod (B) | $23.69 | |
| STA20X20S | 20 mm | Basic (no mounting) | S · female rod | $27.88 | |
| STA20X20SB | 20 mm | Basic (no mounting) | S · male rod (B) | $27.88 | |
| STA20X25 | 25 mm | Basic (no mounting) | - · female rod | $24.16 | |
| STA20X25B | 25 mm | Basic (no mounting) | - · male rod (B) | $24.16 | |
| STA20X25S | 25 mm | Basic (no mounting) | S · female rod | $28.81 | |
| STA20X25SB | 25 mm | Basic (no mounting) | S · male rod (B) | $28.81 | |
| STA20X30 | 30 mm | Basic (no mounting) | - · female rod | $25.35 | |
| STA20X30B | 30 mm | Basic (no mounting) | - · male rod (B) | $25.35 | |
| STA20X30S | 30 mm | Basic (no mounting) | S · female rod | $29.53 | |
| STA20X30SB | 30 mm | Basic (no mounting) | S · male rod (B) | $29.53 |
Need a combination that is not listed? Request a quote.
Where the STA20 Is Used
Pick-and-place and transfer
About 108.9 N at 0.5 MPa suits pushers, stoppers and transfer slides.
Packaging machines
Carton pushers, gates and diverters on packaging lines.
Sensed positioning
Magnet versions report stroke ends to the PLC through cylinder sensors.
Choosing the Right STA20 Configuration
Start with the stroke. Pick the exact travel your machine needs; a longer stroke adds length, weight and air consumption without adding force. If your length is not listed, request a quote and we will confirm whether it can be built.
Every code on this page is the basic version without a mounting code: the cylinder is fixed through its own mounting holes.
Finally pick the version: S adds a magnet for position sensors; B gives a male threaded rod end instead of the standard female thread.
AirTAC STA20 FAQ
Air retracts the rod with about 108.9 N at 0.5 MPa (catalog value, spring force deducted); the internal spring extends it when the port is vented. The force does not depend on the stroke code.
No. The return stroke is driven only by the internal spring, and AirTAC specifies that single-acting cylinders must not be loaded on it. Use a double-acting model if both directions must do work.
M5 ports.
Every code on this page is the basic version without a mounting code; the cylinder is fixed through its own mounting holes.
Usually yes. Request a quote with the stroke, mounting and version and we will confirm whether it can be built, plus price and lead time.
0.2 to 1.0 MPa operating pressure (proof 1.5 MPa) and -20 to +70 °C on filtered air.
No. You can order a single STA20. Orders are processed and handed to the carrier within 3-5 business days.
Buying the STA20 from AirtacDistr
Genuine AirTAC parts
Every order code on this page is the AirTAC factory part number. Specifications follow the AirTAC Products Catalog 2026A. About us
Ready in 3-5 business days
That is our time to process the order and hand it to the carrier. No minimum order: a single piece can be ordered.
14-day returns, 1-year warranty
Return within 14 days of delivery; the buyer pays return shipping. The warranty covers defects not caused by misuse. Return policy
Engineering help
Send your application details and we will confirm the right order code, usually within 7-8 hours. Ask us
Page data checked against the live catalog on 2026-11-03.
Request a Quote for the STA20
Send the order code, quantity and destination. We confirm price, stock and lead time, usually within 7-8 hours.