The AirTAC AirTAC SDA63X85 Compact Cylinder | 63mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø63mm bore and 85mm 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 SDA63X85 is a double-acting single-rod compact cylinder engineered to deliver a substantial 1558.6 N push force at 0.5 MPa. By utilizing a short riveted body that permanently joins the barrel, rear cover, piston, and rod, this unit drastically reduces axial mounting depth compared to conventional round-body designs. The 63 mm bore features a hard-anodized inner wall and a 20 mm piston rod, making it highly effective for space-constrained machinery.
This specific 85 mm stroke configuration relies on a fixed NBR bumper at each end to absorb end-stop impact, meaning it is not field-adjustable like an air cushion. Operating at speeds between 30 and 500 mm/s, the cylinder accepts PT1/4 ports. Note that this base SKU lacks a piston magnet, so it cannot host position sensing without upgrading to the -S variant.
| Model | AirTAC SDA63X85 Compact Cylinder | 63mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø63 mm |
| Stroke | 85 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. |
| ×85 | 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 the ejection plate inside tight molding cells where axial length is restricted, using its 1558.6 N extend force to reliably push finished plastic parts out of the cavity.
Actuates heavy routing gates on packaging conveyors, handling the 85 mm stroke to pivot the guide rails and redirect dense product flow at high cycling rates.
Raises lowerator arms in assembly lines, safely lifting approximately 79.4 kg of automotive subcomponents with a 2:1 safety margin before transferring them downstream.
When sizing this model, evaluate your neighbors: stepping down to the SDA50 yields 981.7 N push at 0.5 MPa, while stepping up to the SDA80 provides 2513.3 N. For the SDA63X85, the safe working load is approximately 935 N (about 60% of the 1558.6 N figure), translating to a vertical lift capacity of roughly 79.4 kg with a 2:1 safety margin. Remember that a standard compact cylinder drifts when air pressure is lost or a valve is centered, as the fixed bumper only decelerates near stroke end rather than locking the load. If your process requires strict position holding, integrate an external rod lock or a pilot-operated check valve. To order, confirm your requirements for the 63 mm bore, 85 mm stroke, PT1/4 port, female M10x1.5 rod thread, and no magnet.
Quick checklist
This double-acting cylinder generates 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 operating pressure limit.
No adjustable air cushion is available; the unit uses a fixed NBR bumper to decelerate the stroke end, so you should add an external shock absorber for high-energy loads. Additionally, this specific SKU has no piston magnet, so it cannot support reed or electronic switches unless you specify the -S option.
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