The AirTAC AirTAC SDA40X35H Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 35mm 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 SDA40X35H is a double-acting, single-rod compact cylinder featuring a 40 mm bore and 35 mm stroke. It generates 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. This H-spec variant utilizes fluororubber (FKM) seals to deliver superior resistance to higher temperatures and oily environments compared to standard NBR. The hard-anodized bore and two-way piston seal ensure long service life.
A short riveted body joins the barrel, rear cover, piston, and rod, minimizing axial mounting depth where a larger round-body unit would fail to fit. End-stopping relies on a fixed NBR bumper rather than an adjustable air cushion, decelerating the piston near stroke end without acting as a locking brake. This specific SKU lacks a piston magnet, so it cannot host AirTAC reed or electronic switches; ordering the -S option is required for position sensing.
| Model | AirTAC SDA40X35H Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 35 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. |
| ×35 | 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 aluminium workpieces in CNC machining centres. The FKM seals withstand spray from way oils and coolants, while the 628.3 N push force firmly locks the part against locators.
Applies consistent downward pressure on corrugated carton flaps in high-temperature packaging lines. The compact 35 mm stroke saves vertical space above the conveyor.
Presses bronze bushings into automotive housings on an assembly line. The 16 mm rod handles the 527.8 N retract force to pull the fixture back without side-loading the short stem.
When sizing this 40 mm bore, evaluate your neighbours: stepping down to the SDA32 yields 402.1 N push at 0.5 MPa, while moving up to the SDA50 provides 981.7 N. For this H-spec unit, the safe working load is approximately 377 N (about 60% of the 628.3 N figure at 0.5 MPa), translating to a vertical lift capacity of roughly 32 kg with a 2:1 safety margin. Confirm your ordering essentials: 40 mm bore, 35 mm stroke, PT1/8 port, female M8x1.25 rod thread, FKM seals, and no magnet.
Remember that a standard compact cylinder does not hold its position if air pressure drops or the valve is centred. The piston will drift, and the fixed bumper only decelerates the end of travel rather than locking the load. If your application must maintain a vertical load without live pressure, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
At 0.5 MPa, the push force is 628.3 N and the pull force is 527.8 N. At 0.7 MPa, push is 879.6 N and pull is 738.9 N. The theoretical maximum push 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, and the speed range is 30-500 mm/s.
No, this specific SKU does not include a piston magnet, so it cannot host reed or electronic switches in the body grooves. You must order the -S option to enable position sensing. Additionally, end stopping is handled by a fixed NBR bumper, not an adjustable air cushion.
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