The AirTAC Airtac SCD Standard Cylinder SCD200X150S is a genuine double-acting DOUBLE-ROD air cylinder: the Ø40mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø200mm bore, 150mm stroke, PT3/4 ports and adjustable end cushioning.
The SCD200X150S is a heavy-duty double-rod pneumatic cylinder engineered for applications demanding perfectly symmetrical force in both directions. With a 200 mm bore and a 40 mm through-rod extending from both end caps, it produces an equal 15080 N of push and pull force at 0.5 MPa, rising to 27143 N at the maximum operating pressure of 0.9 MPa. The adjustable air cushion at each end, with a 33 mm cushion length, decelerates the large piston mass smoothly, protecting the end caps during high-cycle operation.
This model includes a factory-installed magnet ('-S' suffix), allowing direct mounting of CMSG, DMSG, or EMSG reed and solid-state sensors on the barrel for contactless position feedback. The double-rod design provides inherent anti-rotation and can carry tooling or a limit-switch dog on the rear rod. The body length (A dimension) is 362 mm, and the standard PT 3/4 port supplies ample flow for the 30-500 mm/s speed range typical of this ISO 6430 class cylinder.
| Model | Airtac SCD Standard Cylinder SCD200X150S |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø200 mm |
| Rod diameter | Ø40 mm (both ends) |
| Stroke | 150 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT3/4 |
| Rod thread | M36×2 |
| 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 | Adjustable, 33 mm |
| Max stroke | Up to 1500 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 | 15080 N | 15080 N |
| 0.7 MPa | 21111 N | 21111 N |
| Max (@1.0 MPa) | 3075 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). |
|---|---|
| 200 | Bore size in mm. |
| ×150 | 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 15080 N force in both directions makes this cylinder ideal for welding jigs or assembly fixtures where two opposing clamps must be actuated simultaneously from a single air supply.
Use the through-rod to mount a back-stop on the rear while the front rod applies 27 kN of straightening force. The double-rod bearing support handles the reaction forces better than a single-rod design.
The built-in magnet allows sensors to be placed on the barrel for mid-stroke positioning, while the rear rod extension can carry a mechanical flag for a hard-wired end-of-stroke limit switch on a transfer shuttle.
Select the SCD200X150S when you need balanced, high-force actuation from both ends of the cylinder. If your force requirement is lower, stepping down to the SCD160 bore reduces the output to 9425 N at 0.5 MPa, saving space and air consumption. For applications where force is only needed in one direction, a single-rod SC200 cylinder would provide a higher push force (15708 N at 0.5 MPa) due to the full piston area, but with a lower pull force. This double-rod unit is a direct replacement only for another AirTAC SCD200 cylinder matching the 150 mm stroke, PT 3/4 ports, basic mounting, and the -S magnet option. At this 150 mm stroke, the dual-rod support provides excellent guidance, but for significant side loads, an external linear guide or a dedicated guided cylinder is still required to prevent rod bending.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it outputs 15080 N, at 0.7 MPa it outputs 21111 N, and at the maximum operating pressure of 0.9 MPa it reaches 27143 N in both directions.
Choose the SCD200 when you need perfectly equal force and speed in both directions, or when you need to mount tooling, a stopper, or a sensor flag on the rear rod extension. The through-rod also provides better guidance and bending resistance than a single-rod cylinder, though it is not a substitute for an external guide under high side loads.
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