The AirTAC AirTAC SDA63X40H Compact Cylinder | 63mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø63mm bore and 40mm 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 SDA63X40H is a double-acting single-rod compact cylinder engineered for tight axial spaces. A riveted assembly of the barrel, rear cover, piston, and rod minimizes mounting depth compared to conventional round-body units. At 0.5 MPa, it generates 1558.6 N of push force and 1401.5 N of pull force. This specific SKU features a fluororubber (FKM) seal for heightened oil resistance and elevated temperature durability.
Built with a hard-anodized 63 mm bore and a 20 mm piston rod, the unit operates at speeds between 30 and 500 mm/s. End-stopping relies on a fixed NBR bumper that decelerates the piston near stroke completion rather than an adjustable air cushion. Because this configuration lacks the -S magnet option, it cannot directly host magnetic position switches.
| Model | AirTAC SDA63X40H Compact Cylinder | 63mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø63 mm |
| Stroke | 40 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. |
| ×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).
Provides compact 1558.6 N ejection force inside tight mold platens where axial length is restricted, benefiting from the FKM seal in high-heat ambient environments.
Pushes heavy cardboard flaps prior to strapping, using the 20 mm rod to sustain repetitive impact without deflecting the short riveted body.
Secures heavy cast iron blocks during machining, delivering 1401.5 N pull force at 0.5 MPa while the fixed NBR bumper absorbs the stroke end impact.
Selecting this 63 mm bore provides a safe working load of roughly 935 N, assuming a conservative 60 percent utilization of the 1558.6 N push force available at 0.5 MPa. If your vertical lift requirement is around 79.4 kg, this model provides a 2:1 safety margin. If you need to step down, the SDA50 delivers 981.7 N of push at 0.5 MPa; conversely, stepping up to the SDA80 yields 2513.3 N. To hold a load vertically without live pressure, an external rod lock or pilot-operated check valve is required, as the piston drifts on air loss. When ordering, confirm the 40 mm stroke, PT1/4 port, female M10x1.5 rod thread, and FKM seal.
Quick checklist
This double-acting cylinder outputs 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 is 318 kgf at 1.0 MPa. Operating pressure spans 0.15-1.0 MPa, with a proof pressure of 1.5 MPa and a speed range of 30-500 mm/s.
No, the piston drifts when air is lost or the valve is centered. The fixed NBR bumper only decelerates the piston near the stroke end and does not function as a locking brake. To maintain a vertical load safely, you must add an external rod lock or a pilot-operated check valve.
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