The AirTAC AirTAC SDA50X40SBH 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 SDA50X40SBH is a double-acting single-rod compact cylinder engineered for tight axial spaces, delivering a robust 981.7 N push force at 0.5 MPa. Its short riveted body merges the barrel, rear cover, piston, and rod to drastically reduce mounting depth compared to conventional round-body units. The -H designation indicates fluororubber (FKM) seals for enhanced thermal and oil resistance.
This specific configuration includes a built-in piston magnet (-S) for direct mounting of AirTAC reed or electronic switches along the body grooves. It also features a male-thread piston rod (-B) sized at M18x1.5 for secure mechanical load coupling. End-stopping relies on a fixed NBR bumper rather than an adjustable air cushion, meaning external shock absorbers should be added for high-energy cycles.
| Model | AirTAC SDA50X40SBH 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).
Secures heavy cast iron engine blocks during machining operations, utilizing the 981.7 N extend force to maintain rigid positioning against cutting vibration.
Indexes empty wooden pallets into an automated packaging line, where the short 40mm stroke and space-saving riveted body fit neatly within the conveyor frame.
Actuates a 50 kg material handling gate, requiring the male M18x1.5 rod end for a robust mechanical linkage and FKM seals to withstand occasional lubricant exposure.
Selecting this 50mm bore provides a theoretical safe working load of roughly 589 N (about 60% of the 981.7 N figure at 0.5 MPa), which translates to a vertical lift capacity of approximately 50 kg with a 2:1 safety margin. If your application requires less force, stepping down to the SDA40 yields 628.3 N at 0.5 MPa; conversely, scaling up to the SDA63 provides 1558.6 N. When ordering, confirm the 50mm bore, 40mm stroke, PT1/4 port, male M18x1.5 rod thread, magnet, and FKM seal.
Keep in mind that a standard compact cylinder cannot hold a load if air pressure drops or the valve is centered, as the piston will drift and the fixed bumper only decelerates near the stroke end. To maintain vertical position without live pressure, you must integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
Quick checklist
This 50mm bore double-acting cylinder generates a push force of 981.7 N and a pull force of 824.7 N at 0.5 MPa. At 0.7 MPa, the push increases to 1374.4 N. The theoretical maximum push is 200 kgf at the maximum operating pressure of 1.0 MPa.
It uses a fixed NBR bumper at each end to decelerate the piston, which is not an adjustable air cushion. If operating at high speeds, add an external shock absorber. Additionally, it does not hold position on air loss; use an external rod lock or pilot-operated check valve for load holding.
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