Airtac SCD Standard Cylinder SCD80X300SH
The AirTAC Airtac SCD Standard Cylinder SCD80X300SH 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, 300mm stroke, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Rod (both ends)Ø25 mm
- Stroke300 mm
- Port sizePT3/8
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD80X300SH
The SCD80X300SH is a double-acting, double-rod pneumatic cylinder delivering identical push and pull force of 2268 N at 0.5 MPa (4082 N at the 0.9 MPa maximum operating pressure). Its 25 mm diameter rod extends from both ends, providing a balanced, non-rotating actuation platform ideal for high-temperature environments thanks to the built-in Viton (FKM) seals, which extend the operating range from 0 to +150 °C.
A built-in magnet allows direct mounting of CMSG, DMSG, or EMSG sensors along the tie-rod barrel for reliable end-of-stroke detection without external brackets. The 300 mm stroke sits well within the 1500 mm maximum standard stroke for this bore, and the adjustable air cushion (28 mm length) at each end decelerates the piston smoothly, protecting the end caps during high-cycle, high-temperature operation.
Airtac SCD Standard Cylinder SCD80X300SH Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD80X300SH |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 300 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 SCD80X300SH
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 80 | Bore size in mm. |
| ×300 | 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 SCD80X300SH Is Used
High-Temp Two-Sided Transfer
With identical force in both directions and Viton seals rated to 150 °C, this cylinder reliably powers shuttle tables and transfer mechanisms in autoclaves, drying ovens, or near heat-sealing stations.
Non-Rotating Pusher with Rear Sensing
The dual 25 mm rods prevent rotation, keeping a pusher plate aligned. The built-in magnet allows a sensor to be mounted on the rear barrel to confirm retraction, saving space behind the cylinder.
Symmetric Clamping in Hot Presses
Delivers a balanced 4082 N clamping force at 0.9 MPa from both sides, ideal for dual-sided pressing or holding fixtures in hot-molding tools where standard seals would degrade.
Is the Airtac SCD Standard Cylinder SCD80X300SH the Right Cylinder?
Choose the SCD80 bore when your application needs roughly 2268 N of balanced force at standard plant pressure. If your load is lighter, stepping down to the SCD63 bore reduces the equal push/pull force to 1402 N at 0.5 MPa, which can save space and air consumption. For applications requiring only a single working end, a standard SC single-rod cylinder is a more compact and cost-effective choice, as the rear rod on the SCD adds length and requires clearance.
For this 300 mm stroke, be mindful of potential rod bending under high side loads, especially on the unsupported rear rod. An external guide rail or switching to a guided cylinder is recommended if the load is not perfectly axial. As a direct replacement, match the 80 mm bore, 300 mm stroke, PT port thread, basic mounting, and the -S magnet option. The Viton seal variant is essential for replacements in high-temperature service.
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 SCD80X300SH FAQ
Because it is a double-rod cylinder, the effective piston area is the same on both sides. The force is 2268 N for both push and pull at 0.5 MPa, 3175 N at 0.7 MPa, and reaches 4082 N at the maximum operating pressure of 0.9 MPa.
Choose the SCD when you need a rear rod end to mount a tool, a stopper bolt, or a sensor flag, or when you require perfectly equal force and speed in both directions. The through-rod design also provides better guidance and inherent anti-rotation compared to a single-rod cylinder, though it does not replace a dedicated guided cylinder for heavy side loads.
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