The AirTAC Airtac SCD Standard Cylinder SCD80X30 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, 30mm stroke, PT3/8 ports and adjustable end cushioning.
The SCD80X30 is a double-acting, double-rod pneumatic cylinder delivering identical force in both directions—2268 N at 0.5 MPa—because the 25 mm rod passes through both end caps. This through-rod architecture is ideal for short-stroke, two-sided tasks where a rear rod extension can carry a sensor flag or secondary tooling.
With a 30 mm stroke and a compact body length A of 257 mm, this cylinder fits into tight automation cells. The adjustable air cushion (28 mm) decelerates the piston smoothly at both ends, and the PT3/8 ports supply ample flow for the 30-800 mm/s speed range.
| Model | Airtac SCD Standard Cylinder SCD80X30 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 30 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. |
| ×30 | 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 rod extending from both ends allows simultaneous push or pull on two separate mechanisms, such as dual grippers or opposed clamps, with perfectly matched force.
The rear rod extension provides a convenient mounting point for a sensor flag or cam, enabling end-of-stroke detection without interfering with the primary tooling on the front rod.
The dual-rod support offers better resistance to rotation than a single-rod cylinder, making it suitable for short-stroke pushing or ejecting where the tooling must not twist.
Choose the SCD80X30 when you need balanced push-pull force from both ends of the piston rod. If 2268 N at 0.5 MPa is more thrust than required, stepping down to a 63 mm bore (SCD63) reduces force to 1402 N at the same pressure. For applications needing force in only one direction, a single-rod SC series cylinder is a simpler, lower-cost alternative.
For drop-in replacement, match bore (80 mm), stroke (30 mm), PT3/8 port thread, and SCD mounting style. This basic model uses no magnet; if you need barrel-mounted sensors, order the -S variant. The short stroke keeps the rod well-supported, but for any side load, an external guide rail is still recommended.
Double-rod checklist
The push and pull force is identical because it is a double-rod cylinder. At 0.5 MPa it produces 2268 N, at 0.7 MPa it is 3175 N, and at the maximum operating pressure of 0.9 MPa it reaches 4082 N.
Choose the SCD when you need equal force and speed in both directions, a rear rod extension for mounting sensors or tooling, or better inherent resistance to rod rotation. The single-rod SC is a better fit if you only need force applied from one end and want a more compact, lower-cost solution.
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