The AirTAC Airtac SCD Standard Cylinder SCD125X175S is a genuine double-acting DOUBLE-ROD air cylinder: the Ø32mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø125mm bore, 175mm stroke, PT1/2 ports and adjustable end cushioning.
The SCD125X175S delivers identical thrust in both directions, generating 5734 N push and 5734 N pull at 0.5 MPa thanks to its symmetrical double-rod design. The 32 mm rod passes through both end caps, providing a rear connection point for stroke sensors or secondary tooling while inherently resisting rotation better than a single-rod layout. At the full 0.9 MPa operating pressure, output climbs to 10321 N each way.
This 175 mm stroke model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG reed and solid-state sensors to clamp directly onto the tie-rod barrel for clean, non-contact position sensing. The adjustable air cushion at each end, with a 28 mm cushion length, decelerates the piston smoothly. As a genuine AirTAC ISO 6430 class cylinder, it is built for reliable service in demanding pneumatic circuits.
| Model | Airtac SCD Standard Cylinder SCD125X175S |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Rod diameter | Ø32 mm (both ends) |
| Stroke | 175 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/2 |
| Rod thread | M27×2 |
| 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, 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 | 5734 N | 5734 N |
| 0.7 MPa | 8027 N | 8027 N |
| Max (@1.0 MPa) | 1169 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). |
|---|---|
| 125 | Bore size in mm. |
| ×175 | 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 a single cylinder to push a pallet or workpiece off a conveyor in one stroke and retract a stop pin on the opposite side simultaneously, simplifying the pneumatic circuit.
With the built-in magnet and a rear rod, you can mount a CMSG sensor on the back end to detect the retracted position without any interference from the primary tooling attached to the front rod.
The dual-rod support provides better guidance than a single-rod cylinder, making this model suitable for light pushing or ejecting tasks where the tooling must not twist, reducing wear on the rod bearing.
Choose this 125 mm bore when your application needs roughly 5734 N of balanced force at standard plant pressure. If you can work with less thrust, stepping down to the SCD100 bore saves space and air while still providing 3681 N at 0.5 MPa. For applications requiring a pivoting mount, specify the TC centre trunnion option instead of this basic configuration.
This double-rod unit is the correct choice over a single-rod SC when you need a rear rod extension for mounting a limit switch dog, a mechanical stop, or a secondary tool. However, if the load applies significant side force, a through-rod alone is not a substitute for a properly guided cylinder with external rails. To replace an existing unit, match the 125 mm bore, 175 mm stroke, PT port thread, basic mounting style, and the -S magnet option exactly.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are equal. At 0.5 MPa it outputs 5734 N, at 0.7 MPa it outputs 8028 N, and at the maximum operating pressure of 0.9 MPa it reaches 10321 N in both directions. The theoretical force at 1.0 MPa is 1169 kgf.
Select the SCD when you need identical force and speed in both directions or require a rear rod extension. The rear rod can carry a sensor flag, a mechanical stop, or secondary tooling. The through-rod design also provides better support and inherent anti-rotation compared to a single-rod SC cylinder of the same bore.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models usually ship in 3-4 days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.