The AirTAC Airtac SDA Compact Cylinders SDA50X30SG is a genuine double-acting COMPACT (thin) air cylinder with a Ø50mm bore and 30mm 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 SDA50X30SG is a double-acting compact cylinder with G1/4 BSPP parallel ports that seal on a bonded face washer rather than the thread itself. Its 50 mm bore delivers 981.7 N of push at 0.5 MPa, and the riveted thin body keeps axial depth far below what a round-body cylinder of the same bore would need, freeing space inside machine frames and slide assemblies. The SG build pairs the built-in magnet (S) for AirTAC reed or electronic switches with a male-threaded M18x1.5 rod end (B) for direct nut-style coupling to tooling. A 20 mm rod drives the load; keep it free of side load because the short compact body offers no lateral guidance. At each end a fixed NBR bumper softens the stop, and a standard 30 mm stroke stays well inside this bore's 120 mm limit.
| Model | Airtac SDA Compact Cylinders SDA50X30SG |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø50 mm |
| Stroke | 30 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. |
| ×30 | 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).
The 981.7 N push at 0.5 MPa from the 50 mm bore is enough to fold and seat the top flaps of corrugated cases on a packaging line, while the 30 mm stroke matches the flap travel exactly.
On a warehouse palletiser layer plate, the short riveted body fits where a full-length cylinder cannot, and the G1/4 BSPP ports connect straight to an EU-spec valve manifold with bonded-washer fittings.
The male M18x1.5 rod end threads directly into a locating pin holder for insertion of bearing sleeves into housings, with switch positions set along the body grooves using the S magnet and an electronic sensor.
Step down to the SDA32 (402.1 N push at 0.5 MPa) if your fixture needs less muscle, or step up to the SDA63 (1558.6 N) when the 50 mm class is marginal. Before ordering, verify your manifold and fittings accept G1/4 BSPP - this made-to-order parallel thread differs from the standard PT tapered version, so match it to your regional plumbing standard and existing hardware. Ordering essentials: 50 mm bore, 30 mm stroke, G1/4 ports, magnet code S, male rod thread M18x1.5. Note that this cylinder will not hold position when air pressure is lost - the piston drifts, and the bumper is not a brake; add an external rod lock or pilot-operated check valve if holding is required.
Quick checklist
At 0.5 MPa the 50 mm bore gives 981.7 N push (extend) and 824.7 N pull (retract). At 0.7 MPa push rises to 1374.4 N. Maximum push is 200 kgf at 1.0 MPa. The G1/4 BSPP ports, 20 mm rod, male M18x1.5 rod end, and 30-500 mm/s speed range are fixed by the 50 mm platform; standard strokes for this bore run up to 120 mm.
The trailing G in SDA50X30SG specifies G1/4 BSPP parallel ports, a made-to-order alternative to the standard PT tapered thread. BSPP ports seal on a bonded face washer, so they suit OEM plumbing built to the EU/Asia G-standard - check your fittings before ordering. For position feedback, the S magnet in the piston works with AirTAC magnetic switches, either reed or electronic, mounted in the grooves around the body.
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