The AirTAC Airtac SCD Standard Cylinder SCD50X100 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 SCD50X100 double-rod pneumatic cylinder provides a balanced 825 N of thrust in both directions at 0.5 MPa, thanks to its through-rod design that equalises the effective piston area on each side. With a 20 mm rod extending from both end caps and a 100 mm stroke, it is a natural fit for tasks where identical force and speed are needed for the extend and retract portions of a cycle.
This 50 mm bore tie-rod actuator uses PT1/4 ports and features an adjustable air cushion of 21 mm at each end to decelerate the piston smoothly. Its body length A(SCD) is 207 mm, and it operates reliably on filtered air between 0.15 and 1.0 MPa across a standard temperature range of -20 to +70 °C.
| Model | Airtac SCD Standard Cylinder SCD50X100 |
|---|---|
| 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.
The equal 825 N push and pull force at 0.5 MPa makes this cylinder ideal for two-sided clamping fixtures where a workpiece is secured from opposite directions with identical pressure.
With a rod protruding from both ends, the rear rod can actuate a limit switch or hard stop, creating a compact, self-contained end-of-stroke sensing solution without extra brackets on the front tooling.
The 100 mm stroke and through-rod design provide symmetric motion for small transfer gates or diverters on packaging lines, ensuring consistent timing and force in both directions of travel.
This 50 mm bore unit sits between the smaller 40 mm (528 N at 0.5 MPa) and larger 63 mm (1402 N at 0.5 MPa) SCD models. If your application needs more force than the 50 mm can supply, stepping up to the 63 mm bore nearly doubles the available thrust. For applications that only require force from one side, a single-rod SC cylinder may be a more cost-effective choice, but the SCD is essential when you need to mount tooling or a sensor flag on the rear rod.
To replace an existing SCD50X100, match the bore, 100 mm stroke, PT port thread, basic mounting style, and the absence of a magnet. If the cylinder must hold a load when air pressure is removed, an external rod lock or pilot-operated check valve is required, as the air cushion provides deceleration only and will not prevent drift.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. The effective piston area is calculated by subtracting the 20 mm rod area from the 50 mm bore area. This results in 825 N at 0.5 MPa, 1154 N at 0.7 MPa, and 1484 N at the maximum operating pressure of 0.9 MPa.
Choose the SCD50X100 when you need equal force and speed in both directions, or when you require a second rod end for mounting a sensor cam, a rear stopper bolt, or secondary tooling. The through-rod also provides better support for the piston, reducing uneven bushing wear in applications with frequent cycling, though it is not a substitute for an externally guided cylinder under high side loads.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.