The AirTAC Airtac SCD Standard Cylinder SCD125X600S 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, 600mm stroke, PT1/2 ports and adjustable end cushioning.
This SCD125X600S double-rod cylinder provides a balanced 5734 N of force in both directions at 0.5 MPa, rising to 10321 N at 0.9 MPa, because the 32 mm rod passes through both end caps and subtracts the same area from each side. The 600 mm stroke operates within the standard range for this ISO 6430 class tie-rod cylinder, and the built-in magnet lets you clamp CMSG or DMSG sensors directly onto the barrel for precise end-of-stroke or mid-stroke position feedback.
With a 28 mm adjustable air cushion at each end, the piston decelerates smoothly even under the substantial moving mass typical of a 125 mm bore. The PT1/2 ports and M27x2 knuckle threads on both rod ends make it straightforward to attach tooling, brackets, or stroke adjustment stops on either side of the machine.
| Model | Airtac SCD Standard Cylinder SCD125X600S |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Rod diameter | Ø32 mm (both ends) |
| Stroke | 600 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. |
| ×600 | 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 the double-rod design moves a shuttle table or transfer cart with identical speed and power in both directions, simplifying flow controls and tuning.
With the built-in magnet and a rear rod, you can mount CMSG/DMSG sensors on the back side of the cylinder to detect position without interfering with the primary tooling on the front rod.
The twin-rod guidance inherently resists rotation, making this cylinder a solid choice for pushing components into a press or fixture where rod twist would cause misalignment.
Choose the SCD125 when you need symmetric thrust around 5.7 kN at standard plant pressure. If your load is lighter, the SCD100 delivers 3681 N at 0.5 MPa and saves space; for heavier work, the SCD160 steps up to 9425 N. Because the rod extends from both ends, this cylinder is not a direct substitute for a single-rod SC—only pick the SCD when you genuinely need a rear rod for tooling, a sensor flag, or balanced bearing loading. At a 600 mm stroke, make sure the long unsupported rod sections are not exposed to significant side load; add an external linear guide or switch to a guided cylinder if the application imposes lateral forces. For a drop-in replacement, match bore, stroke, PT port thread, basic mounting, and the -S magnet option.
Double-rod checklist
Because the 32 mm rod passes through both ends, the effective piston area is identical for extension and retraction. The force is 5734 N at 0.5 MPa, 8028 N at 0.7 MPa, and 10321 N at the maximum operating pressure of 0.9 MPa. At the theoretical 1.0 MPa, it reaches 1169 kgf.
Only if your application specifically needs a rod on both ends. The SCD has a longer overall body length and provides equal force in both directions, unlike the SC where pull force is lower. The rear rod can carry a second tool, a stop, or a sensor cam, but it also requires clearance behind the cylinder. If you only need a single working end, the SC series is a more compact and cost-effective choice.
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.