
The AirTAC Airtac SCD Standard Cylinder SCD50X1405S 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, 1405mm stroke, PT1/4 ports and adjustable end cushioning.
This SCD50X1405S is a double-acting, double-rod pneumatic cylinder with a 50 mm bore and a non-standard 1405 mm stroke. Because the 20 mm piston rod passes through both end caps, the effective pressure area is identical on both sides, producing an equal 825 N of force in push and pull at 0.5 MPa. The through-rod design inherently resists rotation and allows you to mount tooling, a rear stroke-adjustment stop, or a sensor flag on the back end, making it a natural fit for long-stroke transfer and dual-sided actuation tasks.
At 0.9 MPa, the output climbs to 1484 N in either direction, driven through PT1/4 ports. The cylinder body length A(SCD) is 207 mm, and the adjustable air cushion at each end is 21 mm long to decelerate the piston smoothly. The built-in magnet, denoted by the -S suffix, lets you clamp CMSG, DMSG, or EMSG reed or solid-state sensors directly onto the tie-rod barrel for non-contact end-of-stroke detection along this extended reach.
| Model | Airtac SCD Standard Cylinder SCD50X1405S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø50 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 1405 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. |
| ×1405 | 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 push-pull force and rear rod extension allow a single cylinder to drive a shuttle table between two stations, with tooling or a stop mounted on both ends for balanced, synchronized motion.
The through-rod and dual-piston-rod bearings provide superior guidance for a 1405 mm push stroke, keeping a pusher plate aligned without a separate anti-rotation guide in light axial-load applications.
With the -S magnet, a DMSG sensor on the rear rod end can signal a full retract confirmation, while the front rod does the work, enabling compact, two-position feedback without adding a separate sensor bracket.
The SCD50X1405S suits applications needing balanced, bidirectional force across a very long working distance. If 825 N is insufficient, stepping up to a 63 mm bore SCD provides 1402 N at the same 0.5 MPa pressure. For this 1405 mm stroke, which exceeds the standard maximum, careful attention to rod support is critical; an unsupported 20 mm rod at full extension is vulnerable to bending under side loads. Consider adding an external linear guide or switching to a guided cylinder if the load is not perfectly axial. A direct replacement must match the 50 mm bore, 1405 mm stroke, PT1/4 ports, basic mounting, and the integrated magnet for sensor compatibility.
Double-rod checklist
The forces are equal in both directions because the rod area is subtracted from both sides of the piston. At 0.5 MPa, it outputs 825 N; at 0.7 MPa, 1154 N; and at the maximum operating pressure of 0.9 MPa, it reaches 1484 N.
Choose the SCD when you need identical force and speed in both directions, or when you need to attach tooling, a stop, or a sensor target to the rear rod. The through-rod design also provides better bearing support and inherent anti-rotation compared to a single-rod cylinder, which is beneficial on a long 1405 mm stroke.
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