The AirTAC AirTAC SDA63X70BH 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 SDA63X70BH is a double-acting, single-rod compact cylinder engineered to deliver a robust 1558.6 N push force at 0.5 MPa. Utilizing a short riveted body assembly, it drastically reduces axial mounting depth compared to round-body alternatives, making it highly effective for machinery where spatial footprint is restricted. This specific configuration includes a male M18x1.5 piston rod end for secure mechanical coupling and an FKM fluororubber seal option for enhanced thermal and oil resistance.
The unit operates at speeds between 30-500 mm/s and relies on a fixed NBR bumper at each end to decelerate the stroke. Because this bumper is not an adjustable air cushion, operators managing high kinetic energy should incorporate an external shock absorber or decelerate the approach speed. The 63 mm bore features a PT1/4 port and a 20 mm rod diameter, providing a calculated safe working load of roughly 935 N, which translates to a vertical lift capacity of about 79.4 kg with a 2:1 safety margin.
| Model | AirTAC SDA63X70BH 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 on mid-sized plastic injection molding machines, utilizing the 1558.6 N extend force to reliably strip finished parts from deep cavities.
Folds heavy corrugated cardboard flaps on automated packaging lines, where the compact riveted body minimizes frame intrusion and the FKM seals withstand lubricated shop air.
Pushes sheet metal blanks into alignment dies prior to stamping, taking advantage of the 20 mm rod diameter to handle side-load-free positioning within tight machine cells.
When sizing this actuator, consider stepping down to the SDA50, which yields 981.7 N of push at 0.5 MPa, or moving up to the SDA80, which provides 2513.3 N at the same pressure. To finalize your order, verify the 63 mm bore, 70 mm stroke, PT1/4 port, male M18x1.5 rod thread, and the FKM seal requirement. Note that this SKU lacks a piston magnet, so position sensing is unavailable unless you specify the -S option.
It is critical to understand that a standard compact cylinder cannot maintain its position or hold a load if air pressure is lost or the directional valve is centered. The piston will drift, and the fixed rubber bumper only functions to soften the impact near the stroke end rather than acting as a braking mechanism. If your application demands static load holding, you must integrate an external rod lock or utilize a pilot-operated check valve.
Quick checklist
This 63 mm bore double-acting cylinder generates 1558.6 N push and 1401.5 N pull at 0.5 MPa. At 0.7 MPa, the push increases to 2182.1 N. The theoretical maximum push force is 318 kgf at the 1.0 MPa operating pressure limit.
No, the piston will drift if air is lost or the valve is centered. The fixed NBR bumper only decelerates the piston near the stroke endpoints and does not function as a lock. For vertical load holding, an external rod lock or pilot-operated check valve is required.
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