The AirTAC AirTAC SDA50X140B 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 SDA50X140B is a double-acting, single-rod compact cylinder engineered to deliver 981.7 N of push force and 824.7 N of pull force at 0.5 MPa. Because the 140 mm stroke exceeds the 130 mm standard limit for this 50 mm bore, this specific configuration is manufactured as a non-standard, made-to-order unit. The riveted body design drastically reduces axial mounting depth compared to conventional round-body cylinders, saving valuable machine footprint.
This unit features a male M18x1.5 piston rod thread for robust load coupling. End-stop deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning high-speed approaches may require external shock absorbers. Note that this SKU lacks a piston magnet, so position sensing is not supported without the -S option.
| Model | AirTAC SDA50X140B 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).
Pushes medium-weight cartons off a sorting line using the 981.7 N extend force, with the short riveted body fitting neatly within tight transfer conveyor side-frames.
Raises a hinged pallet gate for hand truck access, lifting approximately 50 kg vertically with a 2:1 safety margin over its 140 mm travel distance.
Ejects formed blister packs from a sealing die, utilizing the male M18x1.5 rod end to thread directly into the custom ejection plate.
When sizing this actuator, evaluate your force requirements against adjacent bores: stepping down to the SDA40 yields 628.3 N of push at 0.5 MPa, while stepping up to the SDA63 provides 1558.6 N. For the current 50 mm bore, the theoretical safe working load is approximately 589 N (about 60% of the 981.7 N figure at 0.5 MPa), translating to a vertical lift capacity of roughly 50 kg with a 2:1 safety margin.
Confirm your ordering essentials carefully: this variant specifies a 50 mm bore, a non-standard 140 mm stroke, PT1/4 ports, a male M18x1.5 rod thread (denoted by B), and no sensor magnet. Remember that a plain compact cylinder drifts when air pressure is lost or the valve is centered; the fixed bumper only decelerates the stroke end and does not function as a locking brake. If your application must hold a load vertically without live pressure, integrate an external rod lock or a pilot-operated check valve.
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 force is 200 kgf at 1.0 MPa. It operates on filtered air between 0.15 and 1.0 MPa, with a proof pressure of 1.5 MPa, and supports speeds from 30 to 500 mm/s.
No, this specific SKU does not include a piston magnet, so it cannot trigger AirTAC reed or electronic switches. To add position sensing, you would need to specify the -S option. Additionally, because the 140 mm stroke exceeds the 130 mm standard maximum, it is produced as a made-to-order item.
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