The AirTAC AirTAC SDA63X20SH Compact Cylinder | 63mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø63mm bore and 20mm 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 SDA63X20SH is a double-acting, single-rod compact cylinder engineered for tight axial spaces. It generates 1558.6 N of push force and 1401.5 N of pull force at 0.5 MPa. The riveted unibody design merges the barrel, rear cover, piston, and rod to drastically reduce mounting depth compared to traditional round-body actuators. This specific configuration includes a built-in piston magnet (-S) for position sensing and fluororubber (-H) seals for enhanced thermal and oil resistance.
Equipped with a 20mm stroke, this model utilizes a 20mm piston rod and PT1/4 air ports. Instead of an adjustable air cushion, the cylinder relies on fixed NBR bumpers at both ends to decelerate the stroke limits. Magnetic switch grooves encircle the body, allowing you to easily mount AirTAC reed or electronic switches for precise end-of-stroke detection without adding external bulk.
| Model | AirTAC SDA63X20SH Compact Cylinder | 63mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø63 mm |
| Stroke | 20 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. |
| ×20 | 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).
Ideal for cramped injection molding machines where the short 20mm stroke and FKM seals withstand elevated ambient heat while ejecting plastic parts.
Provides the 1558.6 N push force required to fold heavy corrugated carton flaps on high-speed packaging lines within a minimal footprint.
Secures light stamping dies in tight machinery frames, utilizing the 20mm stroke to lock components securely before the press cycles.
When sizing this actuator, evaluate your force margins carefully. At 0.5 MPa, the SDA63X20SH provides 1558.6 N of push force, offering a safe working load of roughly 935 N (about 60% capacity) or a vertical lift capability of approximately 79.4 kg with a 2:1 safety factor. If your application requires less force, the smaller SDA50 bore provides 981.7 N at 0.5 MPa; stepping up to the SDA80 yields 2513.3 N for heavier demands.
This model does not hold its position if air pressure drops or the valve is centered, as the piston will drift and the fixed bumper only decelerates near the end of travel. For suspended loads, integrate an external rod lock or a pilot-operated check valve. To order, confirm the 63mm bore, 20mm stroke, PT1/4 porting, female M10x1.5 rod thread, the -S magnet requirement, and the -H FKM seal option.
Quick checklist
This double-acting cylinder delivers 1558.6 N push and 1401.5 N pull at 0.5 MPa. At 0.7 MPa, push increases to 2182.1 N. The theoretical maximum push force is 318 kgf at the 1.0 MPa pressure limit.
No adjustable air cushion is available; it uses fixed NBR bumpers to decelerate at stroke ends, so for high-speed cycles you should add an external shock absorber. Additionally, it cannot hold a load on air loss without an external rod lock or pilot-operated check valve.
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