The AirTAC Airtac SCD Standard Cylinder SCD80X200H is a genuine double-acting DOUBLE-ROD air cylinder: the Ø25mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø80mm bore, 200mm stroke, PT3/8 ports and adjustable end cushioning.
The SCD80X200H is an 80 mm bore, 200 mm stroke double-rod pneumatic cylinder fitted with high-temperature Viton (FKM) seals, rated for continuous operation from 0 to +150 °C. Because the 25 mm piston rod extends through both end caps, the effective pressure area is identical on each side, producing a balanced 2268 N of force in both directions at 0.5 MPa—ideal for hot-environment tooling that must push and pull with the same authority.
At 0.9 MPa the thrust rises to 4082 N each way, and the adjustable air cushion (28 mm length) decelerates the 25 mm through-rod smoothly at both ends of the 200 mm travel. The body length A(SCD) is 257 mm, making the overall retracted length longer than a single-rod SC of the same stroke. PT3/8 ports and an M20x1.5 rod thread complete the package, and the double-rod layout adds rear access for a sensor flag or secondary tooling without extra brackets.
| Model | Airtac SCD Standard Cylinder SCD80X200H |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 200 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT3/8 |
| Rod thread | M20×1.5 |
| 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, 28 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | 3175 N |
| Max (@1.0 MPa) | 463 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). |
|---|---|
| 80 | Bore size in mm. |
| ×200 | 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.
Viton seals permit operation up to 150 °C, making the SCD80X200H suitable for foundry or autoclave tooling where a through-rod must push a mould half while pulling a stripper plate with equal force.
The 200 mm stroke and equal 2268 N push/pull move a transfer shuttle between two stations inside an oven or dryer. The rear rod end can carry a flag for external CMSG/DMSG sensors.
Dual rod extensions provide inherent anti-rotation, aligning a pusher bar that advances and retracts glassware through a lehr. The 28 mm cushion absorbs impact without adding a mechanical brake.
Choose the SCD80 bore when your application needs roughly 2.3 kN of balanced force at standard shop air. If the load is lighter, stepping down to the SCD63 (1402 N at 0.5 MPa) saves space and air consumption; for heavier demands the SCD100 delivers 3681 N at the same pressure. This 200 mm stroke is well within the 1500 mm maximum for the 80 bore, so no special stroke surcharge applies.
A double-rod cylinder gives equal speed and force in both directions, but it is not a guided unit. If the 200 mm stroke exposes the rod to side load or bending moment, add an external linear guide or switch to a guided cylinder. For direct replacement, match the 80 mm bore, 200 mm stroke, PT3/8 ports, basic mounting, and the -H Viton seal suffix; the SCD family does not accept FB flange or CA/CB clevis mounts.
Double-rod checklist
Push and pull force are identical on a double-rod cylinder. At 0.5 MPa the SCD80X200H delivers 2268 N in both directions; at 0.7 MPa it produces 3175 N, and at the maximum operating pressure of 0.9 MPa it reaches 4082 N. The theoretical force at 1.0 MPa is 463 kgf.
Pick the SCD when you need equal force and speed in both directions, a rear rod extension to mount tooling or a sensor target, or better rod guidance than a single-rod cylinder provides. The through-rod subtracts area from both sides, so push and pull are balanced, unlike the SC where pull force is lower. However, the SCD is not a guided cylinder—side loads still require an external guide.
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