The AirTAC AirTAC SDA63X55H Compact Cylinder | 63mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø63mm bore and 55mm 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 SDA63X55H is a double-acting, single-rod compact cylinder engineered with a 63 mm bore and a 55 mm stroke. Its riveted assembly minimizes axial mounting depth, providing a highly space-efficient footprint where a conventional round-body unit would be too bulky. This specific SKU utilizes a fluororubber (FKM) seal for enhanced thermal and oil resistance, operating within the standard -20 to +70 C range while delivering a robust 1558.6 N push force at 0.5 MPa.
The bore features a hard-anodized inner wall paired with a two-way piston seal for low-friction cycling at speeds between 30 and 500 mm/s. End-of-travel deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning high-energy cycles may require external shock absorption. This particular configuration omits the piston magnet, so position sensing is not supported out of the box; adding the -S option would enable the use of reed or electronic switches in the body grooves.
| Model | AirTAC SDA63X55H Compact Cylinder | 63mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø63 mm |
| Stroke | 55 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. |
| ×55 | 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 the FKM seals withstand residual heat and the 1558.6 N force easily strips finished parts from the tooling.
Folds corrugated carton flaps on high-speed packaging lines, utilizing the 55 mm stroke and fixed NBR bumpers to maintain rhythm without requiring complex cushion adjustments.
Acts as a short-stroke gripper feed in progressive metal stamping presses, saving axial space while accurately advancing coil stock under a 935 N safe working load.
Selecting this 63 mm bore provides a theoretical maximum push of 318 kgf at 1.0 MPa. If you need to step down in force, the SDA50 generates 981.7 N of push at 0.5 MPa; stepping up, the SDA80 yields 2513.3 N at the same pressure. A practical safe working load for this model is roughly 935 N (about 60% of the 1558.6 N figure at 0.5 MPa), which translates to a vertical lift capacity of approximately 79.4 kg with a 2:1 safety margin. When ordering, confirm the 55 mm stroke, PT1/4 port, female M10x1.5 rod-end thread, and the FKM seal option. Keep in mind that a standard double-acting cylinder drifts when air pressure is lost or the valve is centered, so an external rod lock or pilot-operated check valve is necessary for strict load-holding applications.
Quick checklist
This double-acting cylinder generates 1558.6 N push and 1401.5 N pull at 0.5 MPa, and 2182.1 N push at 0.7 MPa. The theoretical maximum push is 318 kgf at 1.0 MPa. It operates on filtered air between 0.15 and 1.0 MPa, with a proof pressure of 1.5 MPa, and cycles at speeds of 30-500 mm/s.
No, a standard double-acting cylinder will drift if air is lost or the directional valve is centered. The fixed NBR bumper only decelerates the piston near the stroke end and does not act as a locking brake. To maintain vertical position, you must install an external rod lock or a pilot-operated check valve.
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