Airtac SCD Standard Cylinder SCD100X250SH
The AirTAC Airtac SCD Standard Cylinder SCD100X250SH 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. Ø100mm bore, 250mm stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ100 mm
- Rod (both ends)Ø25 mm
- Stroke250 mm
- Port sizePT1/2
- Rod configDouble rod (through)
- CushionAdjustable, 29 mm
About the Airtac SCD Standard Cylinder SCD100X250SH
The SCD100X250SH is a double-acting, double-rod pneumatic cylinder delivering identical push and pull thrust in both directions. At a standard 0.5 MPa supply, it produces 3681 N of force each way, rising to 6626 N at the maximum operating pressure of 0.9 MPa. This model is fitted with a built-in magnet (-S) for direct mounting of CMSG/DMSG sensors and uses high-temperature Viton (FKM) seals, extending the operating range from the standard -20–70°C up to 0–150°C for demanding hot environments.
With a 100 mm bore and a 250 mm stroke, the through-rod design provides a Ø25 mm hard-chrome piston rod protruding from both end caps. This symmetric construction naturally resists rod rotation and allows tooling or sensor flags to be mounted on the rear rod end. The adjustable air cushion on each end (29 mm length) decelerates the piston smoothly, while the PT1/2 port threads and tie-rod body (A length 263 mm) maintain compatibility with the standard SCD mounting ecosystem.
Airtac SCD Standard Cylinder SCD100X250SH Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD100X250SH |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø100 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 250 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/2 |
| 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, 29 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 (Ø100mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | 5154 N |
| Max (@1.0 MPa) | 751 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 SCD100X250SH
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 100 | Bore size in mm. |
| ×250 | 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 SCD100X250SH Is Used
Bi-Directional Transfer Shuttles
The equal 3681 N push/pull force and through-rod design make this cylinder perfect for shuttle tables that move a fixture between two stations, with tooling or a stop mounted on the rear rod.
High-Temperature Actuation
With Viton seals rated for 0–150°C, this SCD100X250SH variant is specifically suited for actuating dampers, doors, or clamps inside ovens, autoclaves, or foundry equipment where standard seals would fail.
Dual-Sided Position Sensing
The built-in magnet allows CMSG/DMSG sensors to be mounted on the barrel for end-of-stroke detection, while the rear rod extension can trigger a secondary mechanical limit switch for a redundant safety check.
Is the Airtac SCD Standard Cylinder SCD100X250SH the Right Cylinder?
This 100 mm bore model is a strong mid-range performer; if your application needs more force, stepping up to the 125 mm bore provides 5734 N at 0.5 MPa, while the 80 mm bore offers a more compact 2268 N alternative. The double-rod design is ideal when you need equal force and speed in both directions, but if your task only requires a single working end, the standard SC single-rod cylinder is a lighter and more economical choice. For a drop-in replacement, match the 100 mm bore, 250 mm stroke, PT port thread, basic mounting, and the -S magnet option.
At this 250 mm stroke, the twin-rod support provides better guidance than a single-rod cylinder, but it is not a substitute for a fully guided unit under significant side loads. For long-stroke pushing with lateral forces, consider adding an external linear guide or selecting a guided cylinder to protect the rod bearings from premature wear.
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 SCD100X250SH FAQ
Because it is a double-rod cylinder, the effective piston area is identical on both sides. The force is 3681 N at 0.5 MPa, 5153 N at 0.7 MPa, and reaches 6626 N at the maximum operating pressure of 0.9 MPa, in both directions.
Choose the SCD when you need perfectly equal speed and force for both extend and retract strokes, or when you need a rear rod extension to mount tooling, a brake, or a sensor flag. The through-rod also provides better inherent alignment and anti-rotation than a single-rod design, though it cannot replace a fully guided cylinder under heavy side loads.
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