The AirTAC AirTAC SDA50X40BH 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 SDA50X40BH is a double-acting, single-rod compact cylinder engineered to deliver a robust 981.7 N push force at 0.5 MPa. Its riveted body assembly significantly reduces axial mounting depth compared to traditional round-body units, saving valuable machine footprint. This specific configuration includes a male M18x1.5 piston rod thread for secure mechanical coupling and an FKM (fluororubber) seal variant for enhanced thermal and oil resistance.
Instead of an adjustable air cushion, the bore relies on a fixed NBR bumper at each end to decelerate the stroke. Because this SKU lacks the -S magnet option, it cannot support magnetic sensing. The 50 mm bore pairs with a PT1/4 port and a 20 mm rod, offering a safe working load of approximately 589 N (about 60% of the 0.5 MPa push figure) and a vertical lift capacity near 50 kg with a 2:1 safety margin.
| Model | AirTAC SDA50X40BH 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 corrugated cartons into formation on a high-speed palletizing line, utilizing the 981.7 N extend force to square heavy boxes prior to stretch wrapping.
Strikes finished plastic components from an injection molding tool, where the FKM seals withstand elevated ambient heat and occasional oil exposure.
Raises and lowers intermediate machine gates against gravity, safely handling roughly 50 kg loads with a 2:1 safety margin at 0.5 MPa.
When sizing this actuator, compare its 981.7 N push at 0.5 MPa against adjacent bores: stepping down to the SDA40 yields 628.3 N, while stepping up to the SDA63 provides 1558.6 N. To finalize your order, confirm the 50 mm bore, 40 mm stroke, PT1/4 port, male M18x1.5 rod thread (-B), and FKM seals (-H). Note that a plain SDA body does not hold its load if air pressure drops or the valve is centered; the piston will drift, and the fixed bumper only decelerates near the stroke end. For suspended or vertical loads, 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 between 0.15-1.0 MPa, handles a proof pressure of 1.5 MPa, and runs at speeds from 30-500 mm/s.
It uses a fixed NBR bumper at each end to decelerate the piston, which is not an adjustable air cushion; for high-energy cycles, add an external shock absorber. The -B code specifies a male M18x1.5 piston rod thread, and the -H code denotes FKM seals for improved heat and oil resistance.
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