The AirTAC Airtac SCD Standard Cylinder SCD160X400 is a genuine double-acting DOUBLE-ROD air cylinder: the Ø40mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø160mm bore, 400mm stroke, PT3/4 ports and adjustable end cushioning.
The SCD160X400 is a heavy-duty double-rod pneumatic cylinder that produces an identical 9425 N of thrust in both directions at 0.5 MPa, thanks to its through-rod design where a 40 mm rod extends from both end caps. This symmetry eliminates force differentials, making it ideal for large transfer shuttles, lifting beams, and tooling fixtures that require balanced motion and the ability to mount actuators or sensors on the rear rod.
With a 400 mm stroke and a body length A(SCD) of 352 mm, this tie-rod cylinder provides a robust platform for industrial automation. The adjustable air cushion at each end, with a 29 mm cushion length, decelerates high-inertia loads smoothly, while the PT3/4 ports and M36x2 rod threads ensure solid connections for demanding pneumatic circuits.
| Model | Airtac SCD Standard Cylinder SCD160X400 |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø160 mm |
| Rod diameter | Ø40 mm (both ends) |
| Stroke | 400 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT3/4 |
| Rod thread | M36×2 |
| 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 – 500 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.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 9425 N | 9425 N |
| 0.7 MPa | 13195 N | 13195 N |
| Max (@1.0 MPa) | 1922 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). |
|---|---|
| 160 | Bore size in mm. |
| ×400 | 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 equal push/pull force of 9425 N at 0.5 MPa drives a heavy pallet or component shuttle with identical speed and power in both directions, simplifying flow control and preventing load shift.
A 40 mm rod on each end allows simultaneous operation of two clamping or forming tools from a single cylinder body, ensuring perfect mechanical synchronization without complex linkages.
The rear rod extension provides a convenient mounting point for a DMSG sensor flag to confirm full retraction, while the front rod ejects a finished part from a large stamping die.
For applications needing more force, the SCD200X400 steps up to 15080 N at 0.5 MPa. If your task requires force in only one direction, a single-rod SC160 cylinder offers a higher push force of 11780 N at the same pressure and may reduce cost. For this 400 mm stroke, ensure the dual 40 mm rods are externally guided if significant side loads are present, as the long unsupported length can introduce bending moments that the internal bushings are not designed to handle alone.
To replace an existing SCD160X400, match the 160 mm bore, 400 mm stroke, PT3/4 port thread, and any mounting accessories like an FA front flange or TC centre trunnion. If your original unit has a magnet for sensors, specify the -S suffix.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it outputs 9425 N, at 0.7 MPa it outputs 13194 N, and at the maximum operating pressure of 0.9 MPa it delivers 16964 N in both directions.
Choose the SCD160 when you need identical force and speed in both directions, or when you require a rear rod extension to mount cams, sensors, or additional tooling. A single-rod SC160 provides a higher push force (11780 N at 0.5 MPa) if your application only requires power in one direction.
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