The AirTAC AirTAC SDA20X35H Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 35mm 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 SDA20X35H is a double-acting single-rod compact cylinder engineered for tight axial spaces. A riveted assembly unifies the barrel, rear cover, piston, and rod, yielding a minimal footprint compared to round-body units. Equipped with a fluororubber (FKM) seal, this 20mm bore variant provides 157.1 N of push force and 131.9 N of pull force at 0.5 MPa.
This specific model features an 8mm piston rod and an M5x0.8 air port. It relies on a fixed NBR bumper at each end to decelerate the stroke, rather than an adjustable air cushion. Because this SKU lacks the -S option, it has no piston magnet and cannot host magnetic switches.
| Model | AirTAC SDA20X35H Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 35 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. |
| ×35 | 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).
Pushes a fixture against a routing bit with 157.1 N of force at 0.5 MPa, where the FKM seal resists heat from high-speed cutting dust.
Closes a short 35mm stroke to press a heated platen, utilizing the compact riveted body to fit within narrow sealing machinery.
Actuates a precision pinch valve for viscous fluids, benefiting from the 8mm rod and fixed NBR bumpers to maintain a consistent stroke endpoint.
When sizing this actuator, stepping down to the SDA16 yields 100.5 N of push at 0.5 MPa, while stepping up to the SDA25 provides 245.4 N. The computed safe working load for this 20mm bore is approximately 94 N (about 60% of the 157.1 N figure), translating to a vertical lift capacity of roughly 8 kg with a 2:1 safety margin. To order, confirm the 20mm bore, 35mm stroke, M5x0.8 port, female M4x0.7 rod thread, and FKM seal. Note that a plain cylinder drifts when air is lost or the valve is centered; the fixed bumper only decelerates near stroke end and acts as neither a lock nor a brake. To hold a load without live pressure, integrate an external rod lock or pilot-operated check valve.
Quick checklist
This 20mm bore double-acting cylinder generates 157.1 N push and 131.9 N pull at 0.5 MPa, and 219.9 N push at 0.7 MPa. The theoretical maximum push force is 32 kgf at 1.0 MPa. Operating pressure ranges from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa.
No, this specific SKU lacks the -S piston magnet, so it cannot host reed or electronic switches. It also uses a fixed NBR bumper to decelerate at stroke ends rather than an adjustable air cushion, so external shock absorbers may be needed for high-speed approaches.
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.