The AirTAC AirTAC SDA50X140BH Compact Cylinder | 50mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø50mm bore and 140mm 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 SDA50X140BH is a double-acting, single-rod compact cylinder engineered with a 50mm bore and a 140mm stroke. Because 140mm exceeds the 130mm maximum standard stroke for this bore size, this unit is provided as a non-standard, made-to-order configuration. It generates a robust 981.7 N of push force and 824.7 N of pull force at 0.5 MPa. The riveted body design drastically reduces axial mounting depth compared to conventional round-body units, saving valuable machine footprint in tight assemblies.
This specific SKU includes the -B option, meaning it features a male-thread piston rod end (M18x1.5) for secure mechanical load coupling, rather than the default female thread. It also carries the -H seal option, utilizing fluororubber (FKM) seals for enhanced resistance to higher temperatures and oily environments. The bore is hard-anodized for longevity, and end-stopping is handled by a fixed NBR bumper that decelerates the piston near stroke end. Note that this SKU lacks the -S magnet and therefore cannot support magnetic sensing.
| Model | AirTAC SDA50X140BH Compact Cylinder | 50mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø50 mm |
| Stroke | 140 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. |
| ×140 | 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 push-off arm on a palletizing cell, utilizing the male M18x1.5 rod end for a rigid coupling that handles the 50 kg vertical lift margin safely during layer transfer.
Acts as a secondary ejector in an injection molding line, where the FKM seals withstand ambient heat and oily residues while fitting into a shallow mold-mounting envelope.
Powers a diverter gate on a high-speed parcel conveyor, relying on the 140mm extended reach to redirect heavy totes without requiring a long, protruding round-body cylinder.
When sizing this model, evaluate your force requirements carefully. Stepping down to the SDA40 yields 628.3 N of push at 0.5 MPa, whereas stepping up to the SDA63 provides 1558.6 N. The SDA50X140BH offers a theoretical safe working load of roughly 589 N (about 60% of its 981.7 N capacity at 0.5 MPa), making it suitable for a vertical lift of approximately 50 kg with a 2:1 safety margin. Be aware that a plain compact cylinder does not hold its load if air pressure is lost or the valve is centered; the piston will drift, and the fixed bumper only decelerates it near the end of travel. For suspended or vertical loads, incorporate an external rod lock or a pilot-operated check valve. To order, confirm the 50mm bore, 140mm non-standard stroke, PT1/4 port, male M18x1.5 rod thread, FKM seals, and the absence of a sensor magnet.
Quick checklist
This 50mm bore double-acting cylinder delivers 981.7 N push and 824.7 N pull at 0.5 MPa, and 1374.4 N push at 0.7 MPa. The theoretical maximum push force is 200 kgf at 1.0 MPa. It operates on filtered air at 0.15-1.0 MPa, with a proof pressure of 1.5 MPa, and supports a speed range of 30-500 mm/s.
No, this specific SKU does not include the -S magnet option, so it cannot trigger AirTAC reed or electronic switches. If your application requires position sensing, you must select the -S variant. Additionally, because this unit uses a fixed NBR bumper rather than an adjustable air cushion, you should slow the approach speed or add an external shock absorber for high-energy loads.
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