The AirTAC Airtac SCD Standard Cylinder SCD50X100SH is a genuine double-acting DOUBLE-ROD air cylinder: the Ø20mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø50mm bore, 100mm stroke, PT1/4 ports and adjustable end cushioning.
The SCD50X100SH is a double-acting, double-rod pneumatic cylinder delivering identical force in both directions—825 N at 0.5 MPa—thanks to its through-rod design. The 20 mm rod protrudes from both ends, making it ideal for applications where tooling, a limit switch flag, or a stopper must be mounted on the rear rod, or where symmetric force and speed are critical.
This specific model includes a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors and is fitted with Viton (FKM) seals (-H), raising the operating temperature range to 0–150 °C for demanding hot environments. The body length A(SCD) is 207 mm, and the adjustable pneumatic cushion at each end decelerates the 100 mm stroke smoothly.
| Model | Airtac SCD Standard Cylinder SCD50X100SH |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø50 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 100 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 21 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SCD (double-rod) datasheet. Because the rod runs through both caps, the effective area is (bore² − rod²) in both directions. Confirm against the product label before installation. Thread options: PT (standard) / G.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 825 N | 825 N |
| 0.7 MPa | 1155 N | 1155 N |
| Max (@1.0 MPa) | 168 kgf | |
Push and pull are EQUAL on a double-rod cylinder — both chambers lose the rod area, so effective area = (bore² − rod²) each way. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 50 | Bore size in mm. |
| ×100 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod), SCJ (adjustable stroke), SCT (multi-position). SCD mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Operates a tool or clamp from both ends of the cylinder simultaneously, with equal 1484 N of force at 0.9 MPa, ensuring perfectly synchronized motion without complex linkages.
The built-in magnet and Viton seals allow reliable end-of-stroke detection with CMSG/DMSG sensors in ovens, autoclaves, or foundry equipment where ambient temperatures reach 150°C.
The dual 20 mm rod design provides inherent anti-rotation stability, making it suitable for pushing or ejecting parts where a single-rod cylinder's piston might twist and misalign.
Choose the SCD50 when you need balanced push-pull force around 825 N at 0.5 MPa. If you need more force, step up to the SCD63, which provides 1402 N each way. For less force in a lighter package, the SCD40 delivers 528 N. If your application only requires actuation from one side, the single-rod SC series is a simpler, more cost-effective alternative. The double-rod design offers better guidance than a single rod, but it is not a substitute for a guided cylinder under significant side loads.
For a direct replacement, match the 50 mm bore, 100 mm stroke, PT port thread, basic mounting, and the -S magnet and -H Viton seal options. This ensures full mechanical and functional interchangeability with an existing AirTAC SCD50X100SH unit.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it produces 825 N, at 0.7 MPa it's 1154 N, and at the maximum operating pressure of 0.9 MPa, the force is 1484 N in both directions.
You would choose the SCD when you need to mount tooling or sensors on both ends of the rod, require perfectly equal force and speed in both directions, or need the better rod guidance and anti-rotation properties that a through-rod provides. The SC single-rod cylinder has unequal push/pull force and a rod on only one end.
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