The AirTAC AirTAC SDA40X75H Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 75mm 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 SDA40X75H is a double-acting single-rod compact cylinder engineered for tight axial spaces. A riveted assembly unites the barrel, rear cover, and piston to minimize mounting depth, delivering a robust 628.3 N push force at 0.5 MPa. This specific SKU includes an H-designation fluororubber (FKM) seal for enhanced thermal and oil resistance, operating within a standard -20 to +70 C range.
It features a 16 mm piston rod and utilizes a PT1/8 port. End-stopping relies on a fixed NBR bumper that decelerates the piston near stroke completion; this is a non-adjustable bumper rather than an air cushion, so high-energy cycles may require external shock absorption. Because this base configuration lacks the S magnet option, it cannot host magnetic reed or electronic switches.
| Model | AirTAC SDA40X75H Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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. |
| ×75 | 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 engine blocks during machining operations, utilizing the 628.3 N extend force to hold components firmly against cutting vibrations.
Drives mechanical arms to tuck corrugated box flaps prior to sealing, where the 75 mm stroke and space-saving riveted body fit neatly within compact packaging frames.
Actuates routing gates on high-speed logistics lines, pushing diverted parcels with a safe working load of 377 N without extending into adjacent walk aisles.
When sizing this actuator, 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 40 mm bore, a safe working load is approximately 377 N (60% of the 0.5 MPa rating), translating to a vertical lift capacity of about 32 kg with a 2:1 safety margin. Ensure your ordering essentials cover the 40 mm bore, 75 mm stroke, PT1/8 port, female M8x1.25 rod thread, and the FKM seal option.
Remember that a standard compact cylinder drifts when air pressure is lost or the valve is centered, as the fixed bumper only decelerates near the stroke end and acts as neither a lock nor a brake. If your application must hold a load without live pressure, incorporate an external rod lock or a pilot-operated check valve.
Quick checklist
This 40 mm bore double-acting cylinder generates 628.3 N push and 527.8 N pull at 0.5 MPa, increasing to 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, with an operating pressure range of 0.15-1.0 MPa.
No, this specific SKU lacks the S piston magnet and cannot host reed or electronic switches. Additionally, it uses a fixed NBR bumper for end deceleration rather than an adjustable air cushion, so high-speed applications should incorporate external shock absorbers.
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