The AirTAC AirTAC SDA16X40S Compact Cylinder | 16mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø16mm bore and 40mm stroke, M5×0.8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA16X40S is a double-acting, single-rod compact cylinder engineered for tight machinery footprints. It generates 100.5 N of push force and 86.4 N of pull force at 0.5 MPa. Because the barrel, rear cover, piston, and rod are joined into a short riveted assembly, it saves significant axial mounting depth compared to standard round-body units. The bore is hard-anodized, and the piston relies on a two-way seal for reliable operation.
This specific configuration includes a built-in piston magnet (the S option) for position detection via AirTAC reed or electronic switches seated in the body grooves. End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion. With a 6 mm piston rod and a 40 mm stroke, it provides a safe working load of roughly 60 N (about 60% of the 0.5 MPa push figure) and can vertically lift approximately 5.1 kg with a 2:1 safety margin.
| Model | AirTAC SDA16X40S Compact Cylinder | 16mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø16 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod end thread | M3×0.5 female / M5×0.8 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 50 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 | 101 N | 86 N |
| 0.7 MPa | 141 N | — |
| Max (@1.0 MPa) | 21 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. |
|---|---|
| 16 | 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).
Actuates a low-profile routing head on an electronics assembly fixture, utilizing the 40 mm stroke to plunge a cutting tool without consuming excessive Z-axis height.
Applies 100.5 N of clamping pressure at 0.5 MPa to hold a thin plastic blister card under a heat sealing element within a constrained packaging machine frame.
Drives a micro-fluidic nozzle into position for reagent dispensing, taking advantage of the built-in magnet to trigger a solid-state sensor for precise volumetric dosing.
When sizing this actuator, evaluate your force requirements bidirectionally. Stepping down to the SDA12 reduces the push output to 56.5 N at 0.5 MPa, whereas moving up to the SDA20 increases it to 157.1 N at 0.5 MPa. If your setup must maintain a vertical load during air loss or valve centering, note that this unit will drift, as the fixed rubber bumper only decelerates the stroke end rather than locking the rod. You should incorporate an external rod lock or a pilot-operated check valve for secure holding.
To finalize your order, confirm the following essentials: 16 mm bore, 40 mm stroke, M5x0.8 port, built-in magnet for reed or electronic switches, and a female M3x0.5 rod-end thread. Avoid applying lateral side loads to the compact 6 mm rod to prevent premature seal wear.
Quick checklist
This double-acting cylinder provides 100.5 N push and 86.4 N pull at 0.5 MPa, and 140.7 N push with 121 N pull at 0.7 MPa. The theoretical maximum push is 21 kgf at 1.0 MPa. It operates between 0.15 and 1.0 MPa, withstands 1.5 MPa proof pressure, and runs at speeds from 30 to 500 mm/s across a -20 to +70 C temperature range.
It relies on a fixed NBR bumper at each end to decelerate the piston, which is not an adjustable air cushion. For high-energy cycles, you should slow the approach speed or add an external shock absorber. Furthermore, it does not hold position on its own; if air is lost, the piston drifts, so an external rod lock or pilot-operated check valve is required for load holding.
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