The AirTAC AirTAC SDA20X25H Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 25mm stroke, M5×0.8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA20X25H is a double-acting, single-rod compact cylinder engineered for tight machinery footprints. Its riveted assembly significantly reduces axial mounting depth compared to round-body units, yielding a push force of 157.1 N at 0.5 MPa. This specific H-suffix variant utilizes a fluororubber (FKM) seal to deliver enhanced thermal and oil resistance over the standard NBR components.
The unit features an 8 mm piston rod and an M5x0.8 air port. End-stroke deceleration relies on a fixed NBR bumper rather than an adjustable air cushion, meaning external shock absorbers are recommended for high-energy approaches. Without a piston magnet, this base SKU cannot host position sensors.
| Model | AirTAC SDA20X25H Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 25 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod end thread | M4×0.7 female / M6×1.0 male (B) |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed NBR bumper (both ends) |
| Max standard stroke | Up to 90 mm |
Specifications follow the official AirTAC SDA compact-cylinder datasheet. Confirm against the product label before installation. Port thread: PT (standard). Rod: female thread (blank) / male thread (B).
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 20 | Bore size in mm. |
| ×25 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| B | Male-thread piston rod (omit = female-thread rod). |
Thread: PT standard. Related SDA-family variants: SSA (single-acting push), STA (single-acting pull), SDAD (double rod), SDAJ (adjustable stroke), SDAT (duplex), SDAW (duplex-end).
Actuates the tooling head on a printed circuit board routing machine, where the short 25 mm stroke and compact body depth fit neatly within dense electronics assembly cells.
Provides the 157.1 N clamping pressure required to close heated platens on pharmaceutical blister packaging lines, with the FKM seal surviving elevated ambient temperatures.
Drives a precision dosing valve for chemical dispensing, utilizing the 8 mm rod to meter fluids accurately while the fluororubber seals resist aggressive media.
This 20 mm bore generates 157.1 N of push force at 0.5 MPa, offering a safe working load of roughly 94 N (about 60 percent of capacity) and a vertical lift capability near 8 kg with a 2:1 safety margin. If your application requires less force, the SDA16 provides 100.5 N; stepping up to the SDA25 yields 245.4 N. To hold a load securely during air loss or valve centering, you must add an external rod lock or pilot-operated check valve, as the piston will drift. When ordering, confirm the 25 mm stroke, M5x0.8 port, female M4x0.7 rod thread, and the FKM seal option.
Quick checklist
At 0.5 MPa, the push force is 157.1 N and the pull force is 131.9 N. At 0.7 MPa, the push force is 219.9 N. The theoretical maximum push force is 32 kgf at 1.0 MPa. The operating pressure range is 0.15-1.0 MPa, with a proof pressure of 1.5 MPa.
No, this specific SKU lacks the internal piston magnet, so it cannot host reed or electronic switches. You would need the SDA20X25HS variant for position sensing. Additionally, end-stop deceleration is handled by a fixed NBR bumper, not an adjustable air cushion.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.