The AirTAC AirTAC SDA50X40H Compact Cylinder | 50mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø50mm bore and 40mm stroke, PT1/4 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA50X40H is a double-acting single-rod compact cylinder engineered for tight axial spaces, delivering 981.7 N of push force and 824.7 N of pull force at 0.5 MPa. This specific SKU utilizes a fluororubber (FKM) seal variant, providing enhanced resistance to higher temperatures and oily environments compared to the standard NBR seals. Its short riveted body integrates the barrel, rear cover, piston, and rod to drastically reduce mounting depth versus traditional round-body units.
This 50 mm bore model features a 20 mm piston rod and PT1/4 air ports. End-stop deceleration is handled by a fixed NBR bumper at each end, which absorbs impact energy but is not a field-adjustable air cushion. Because this configuration lacks the -S magnet option, it cannot directly host AirTAC reed or electronic switches; sensing requires the -S variant.
| Model | AirTAC SDA50X40H Compact Cylinder | 50mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø50 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod end thread | M10×1.5 female / M18×1.5 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 120 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 | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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. |
|---|---|
| 50 | Bore size in mm. |
| ×40 | 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).
Drives the mechanical flap folders on corrugated box palletizing lines, where the 981.7 N push force securely tucks heavy cardboard flaps prior to strapping.
Actuates a routing gate on a high-speed beverage conveyor, leveraging the 40 mm stroke and short body depth to fit between tightly spaced transfer belts.
Provides a secondary ejection push on a plastic injection molding machine, utilizing the FKM seals to withstand ambient heat and oil mist near the mold halves.
When sizing this actuator, evaluate your force margins carefully. Stepping down to the SDA40 reduces the 0.5 MPa push output to 628.3 N, while stepping up to the SDA63 increases it to 1558.6 N. For the SDA50X40H, the 981.7 N push at 0.5 MPa translates to a safe working load of roughly 589 N (about 60 percent capacity) and a vertical lift capability of approximately 50 kg with a 2:1 safety margin. Confirm your ordering essentials: 50 mm bore, 40 mm stroke, PT1/4 port, female M10x1.5 rod thread, and FKM seals.
Keep in mind that a standard compact cylinder like this drifts when air pressure is lost or the control valve is centered. The fixed bumpers only decelerate the piston near the stroke extremes and do not function as a locking brake. If your application must hold a vertical load without live pressure, incorporate an external rod lock or a pilot-operated check valve into the pneumatic circuit.
Quick checklist
This 50 mm bore double-acting cylinder generates 981.7 N push and 824.7 N pull at 0.5 MPa, increasing to 1374.4 N push and 1154.5 N pull at 0.7 MPa. The theoretical maximum push is 200 kgf at 1.0 MPa. It operates between 0.15 and 1.0 MPa, with a proof pressure of 1.5 MPa, and runs at speeds from 30 to 500 mm/s.
No, this model uses fixed NBR bumpers to decelerate the piston at stroke ends, which are not field-adjustable air cushions; for high kinetic energy loads, add an external shock absorber. Additionally, this specific SKU lacks the -S piston magnet, so it cannot support reed or electronic switches without changing to the -S variant.
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