The AirTAC AirTAC SDA40X40H Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 40mm stroke, PT1/8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA40X40H is a double-acting single-rod compact cylinder engineered with a 40 mm bore and 40 mm stroke. It generates 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. This specific H-variant utilizes fluororubber (FKM) seals, providing enhanced resistance to higher temperatures and oily environments compared to the standard NBR configuration.
Designed to minimize axial mounting depth, its short riveted body integrates the barrel, rear cover, and piston into a highly space-efficient package. The unit features a hard-anodized bore and relies on a fixed NBR bumper at each end to decelerate the stroke end, rather than an adjustable air cushion. Operating at speeds between 30 and 500 mm/s, this model lacks a piston magnet and therefore cannot support magnetic sensing.
| Model | AirTAC SDA40X40H Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 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 | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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. |
|---|---|
| 40 | 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 aluminum housings inside machining centers. The FKM seals withstand exposure to synthetic cutting fluids, while the compact depth fits neatly within tight fixture envelopes.
Diverts corrugated cartons on a packaging line. Delivering 628.3 N of extend force at 0.5 MPa, it easily knocks heavy boxes onto a downstream conveyor belt.
Acts as a localized stripper arm inside a tight mold frame. The 16 mm piston rod and M8x1.25 female thread provide a robust coupling point for the ejection plate.
When sizing this actuator, evaluate your force requirements carefully. Stepping down to the SDA32 yields 402.1 N of push at 0.5 MPa, while stepping up to the SDA50 provides 981.7 N. For the current 40 mm bore, the safe working load is approximately 377 N (about 60% of the 628.3 N output at 0.5 MPa), which translates to a vertical lift capacity of roughly 32 kg with a 2:1 safety margin. Keep in mind that a standard cylinder does not hold its position if air pressure drops or the valve is centered; the piston will drift, and the fixed bumper only decelerates near the stroke end. To secure a suspended load, integrate an external rod lock or a pilot-operated check valve. To order, confirm the 40 mm bore, 40 mm stroke, PT1/8 port, female rod-end thread (M8x1.25), and the FKM seal option.
Quick checklist
This double-acting single-rod cylinder provides 628.3 N push and 527.8 N pull at 0.5 MPa, and 879.6 N push and 738.9 N pull at 0.7 MPa. The theoretical maximum push force is 128 kgf at 1.0 MPa. Operating pressure ranges from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa.
No, this specific SKU does not include a piston magnet, so it cannot support reed or electronic switches. You would need to specify the -S option to add a magnet for sensing. Additionally, end-of-stroke deceleration is handled by a fixed NBR bumper, not an adjustable air cushion.
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