The AirTAC Airtac SCD Standard Cylinder SCD50X375S 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, 375mm stroke, PT1/4 ports and adjustable end cushioning.
The SCD50X375S is a 50 mm bore, 375 mm stroke double-rod pneumatic cylinder with a built-in magnet for direct mounting of CMSG/DMSG/EMSG sensors. Its through-rod design provides an identical effective piston area on both sides, yielding a balanced 825 N of force in each direction at 0.5 MPa. The 20 mm diameter rod extends from both ends, offering a convenient rear attachment point for a stroke sensor flag, a mechanical stop, or secondary tooling.
With a body length A(SCD) of 207 mm and a cushion length of 21 mm at each end, this cylinder is built for symmetric, repeatable motion. The adjustable air cushion decelerates the piston smoothly in both directions, but it does not lock the load. If the application requires the rod to hold position without live air pressure, an external rod brake or pilot-operated check valve must be added to the circuit.
| Model | Airtac SCD Standard Cylinder SCD50X375S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø50 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 375 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. |
| ×375 | 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 force and speed in both directions make it ideal for a linear shuttle table that moves a pallet between two stations, using the rear rod for a counterbalance or limit switch flag.
Actuate a clamping mechanism from either end. The through-rod allows a release handle or manual override to be mounted on the rear cap side, simplifying fixture design.
The dual-rod support provides better resistance to rotation than a single-rod cylinder. Use the rear rod extension to mount a guide block, creating a simple, cost-effective non-rotating pusher.
This 50 mm bore SCD is the mid-range workhorse, stepping up from the SCD40 (528 N at 0.5 MPa) and below the SCD63 (1402 N at 0.5 MPa). Choose the SCD50X375S when you need equal push-pull force for a two-sided operation and the convenience of magnetic piston sensing. If your task only requires force from one end, a single-rod SC50 cylinder would be a more economical choice. For a 375 mm stroke, be mindful of the unsupported rod length when fully extended; if the load applies any side force, pair this cylinder with an external guide rail or switch to a guided cylinder to prevent rod bending and premature seal wear.
As a direct replacement, match the 50 mm bore, 375 mm stroke, PT port thread, basic mounting, and the -S magnet option. This SCD model uses the standard TPU seal and PT threads, and its mounting accessories are limited to the FA front flange, LB foot mount, or TC centre trunnion from the F-SC50 series.
Double-rod checklist
Because the piston rod passes through both end caps, the push and pull forces are identical. At 0.5 MPa it provides 825 N, at 0.7 MPa it provides 1154 N, and at the maximum operating pressure of 0.9 MPa it delivers 1484 N in both directions.
Choose the SCD when you need perfectly equal force and speed in both directions, or when you need to mount tooling, a sensor flag, or a mechanical stop on the rear rod. The through-rod also provides better guidance and anti-rotation support for the piston rod compared to a single-rod design, though it is not a replacement for a fully guided cylinder under heavy 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.