The AirTAC AirTAC SDA63X70H Compact Cylinder | 63mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø63mm bore and 70mm 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 SDA63X70H is a double-acting single-rod compact cylinder engineered for tight axial spaces. It delivers a robust 1558.6 N push and 1401.5 N pull at 0.5 MPa. The short riveted body significantly reduces overall mounting depth compared to round-body units, making it highly effective for shrinking machine footprints without sacrificing actuation power. This specific SKU features an H-designation fluororubber (FKM) seal for enhanced thermal and oil resistance.
Built with a hard-anodized 63 mm bore and a 20 mm piston rod, it operates at speeds of 30-500 mm/s via PT1/4 ports. The stroke end is decelerated by a fixed NBR bumper rather than an adjustable air cushion. Note that this configuration lacks a piston magnet (-S), so it cannot directly host magnetic switches; the standard female M10x1.5 rod end thread handles load coupling.
| Model | AirTAC SDA63X70H Compact Cylinder | 63mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø63 mm |
| Stroke | 70 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 | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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. |
|---|---|
| 63 | Bore size in mm. |
| ×70 | 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).
Drives ejection pins in plastic injection molding machines where high 1558.6 N force is needed to strip parts, and the FKM seal withstands ambient heat radiating from the mold plates.
Lifts intermediate pallet layers in packaging lines, utilizing the 70 mm stroke to raise loads up to 79.4 kg safely while fitting within narrow vertical lift columns.
Secures heavy cast iron blocks inside CNC machining centers, taking advantage of the compact riveted body to minimize interference with the cutting tool path.
When sizing this actuator, compare its output against adjacent bores. Stepping down, the SDA50 provides 981.7 N of push at 0.5 MPa, while stepping up to the SDA80 yields 2513.3 N. This SDA63X70H strikes a strong middle ground, offering a safe working load of roughly 935 N (about 60% of its 0.5 MPa capacity) and a vertical lift capability near 79.4 kg with a 2:1 safety margin. To order, confirm the 63 mm bore, 70 mm stroke, PT1/4 port, female rod thread, and the FKM seal option.
Remember that a standard compact cylinder drifts when air pressure is lost or the valve is centered. The fixed NBR bumper only absorbs impact near the stroke end and does not function as a locking brake. If your application must hold a load vertically without live pressure, you must integrate an external rod lock or a pilot-operated check valve into the pneumatic circuit.
Quick checklist
At 0.5 MPa, this 63 mm bore cylinder provides 1558.6 N of push and 1401.5 N of pull. At 0.7 MPa, push increases to 2182.1 N. The theoretical maximum push is 318 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 operating speed spans 30-500 mm/s.
No, this specific SKU does not include a piston magnet, so it cannot host reed or electronic switches. You would need the -S variant for sensing capabilities. Additionally, end-of-stroke deceleration relies on a fixed NBR bumper, which is not an adjustable air cushion, so external shock absorbers may be required for high-energy loads.
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