Airtac SCD Standard Cylinder SCD80X350STC
The AirTAC Airtac SCD Standard Cylinder SCD80X350STC 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, 350mm stroke, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Rod (both ends)Ø25 mm
- Stroke350 mm
- Port sizePT3/8
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD80X350STC
The SCD80X350STC is a double-acting, double-rod pneumatic cylinder that outputs identical force in both directions—2268 N at 0.5 MPa, rising to 4082 N at the maximum operating pressure of 0.9 MPa. Its 25 mm diameter rod passes through both end caps, providing a rear extension for mounting a sensor flag, stopper, or secondary tooling while naturally resisting rotation better than a single-rod design.
This 350 mm stroke model includes a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors and is configured with a centre trunnion (TC) mount, supplied with the TCM1 bracket (F-SC80TC), allowing the cylinder body to pivot. The tie-rod construction uses a PT3/8 port and features an adjustable air cushion with a 28 mm cushion length to decelerate the piston smoothly at both ends of its travel.
Airtac SCD Standard Cylinder SCD80X350STC Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD80X350STC |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 350 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.
Theoretical Output Force (Ø80mm, double rod)
| 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.
Model Code: Airtac SCD Standard Cylinder SCD80X350STC
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 80 | Bore size in mm. |
| ×350 | 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.
Where the Airtac SCD Standard Cylinder SCD80X350STC Is Used
Two-Sided Transfer Shuttles
The through-rod design lets you attach identical tooling to both ends, moving parts between two parallel conveyor lines with perfectly synchronized push and pull strokes.
Rear-Mounted Stroke Sensing
With the built-in magnet and a rear rod extension, you can mount a CMSG sensor on the back end to detect piston position without interfering with the front tooling or workpiece.
Balanced Clamping Stations
The equal 2268 N force in both directions and the centre trunnion mount make this cylinder ideal for a pivoting clamp that must apply and release with the same controlled pressure.
Is the Airtac SCD Standard Cylinder SCD80X350STC the Right Cylinder?
Choose the SCD80 bore when your application needs around 2268 N of balanced force at standard plant air. If you require less force, the SCD63 bore provides 1402 N at 0.5 MPa in a lighter body; for heavier work, the SCD100 delivers 3681 N. The 350 mm stroke is well within the 1500 mm maximum for this bore, but with a long unsupported rod, you should verify that side loads are minimal or add an external guide rail to prevent rod bending.
This double-rod unit is the right choice when you need a rear rod end for work or sensing. If you only need force from one end, a single-rod SC80 cylinder is a simpler, lower-cost alternative. To replace an existing SCD80X350STC, match the 80 mm bore, 350 mm stroke, PT3/8 port thread, centre trunnion (TC) mounting, and the built-in magnet option exactly.
Double-rod checklist
- ✓ Need equal force / speed both directions?
- ✓ Rear rod for tooling, stopper or sensor flag?
- ✓ Better rod guidance / anti-rotation?
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Keep BOTH rod ends clear of side load and interference.
- check Adjust end cushion screws for smooth stops.
- check Use SCD mounting accessory (FA / LB / TC / TCM1).
- check Installation by qualified personnel per AirTAC docs.
Airtac SCD Standard Cylinder SCD80X350STC FAQ
Because the piston rod extends from both ends, the effective pressure area is identical for push and pull. The force is 2268 N at 0.5 MPa, 3175 N at 0.7 MPa, and 4082 N at the maximum operating pressure of 0.9 MPa.
Choose the SCD80 when you need a rear rod end to perform work, carry a sensor flag, or mount a mechanical stop. It also provides better rod guidance and anti-rotation than a single-rod cylinder, though it is not a substitute for a fully guided unit under high side loads.
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