The AirTAC Airtac SCD Standard Cylinder SCD250X500 is a genuine double-acting DOUBLE-ROD air cylinder: the Ø50mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø250mm bore, 500mm stroke, PT1" ports and adjustable end cushioning.
The SCD250X500 is a heavy-duty double-rod pneumatic cylinder that outputs an identical 23562 N of thrust in both directions at 0.5 MPa, rising to 42412 N at the maximum operating pressure of 0.9 MPa. Its 50 mm diameter rod passes completely through both end caps, providing a rear rod extension that is ideal for mounting external stroke sensors, cams, or a secondary tool plate without adding offset load.
This tie-rod cylinder body measures 435 mm (A dimension) and includes an adjustable air cushion with a 40 mm length on each end to decelerate large inertial loads smoothly. The 1-inch PT ports supply ample flow for the 250 mm bore, and the rod features an M42x2 knuckle thread. As an ISO 6430 class cylinder, it is built for demanding industrial tasks where symmetric force and a through-rod are non-negotiable.
| Model | Airtac SCD Standard Cylinder SCD250X500 |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø250 mm |
| Rod diameter | Ø50 mm (both ends) |
| Stroke | 500 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1" |
| Rod thread | M42×2 |
| 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, 40 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 | 23562 N | 23562 N |
| 0.7 MPa | 32987 N | 32987 N |
| Max (@1.0 MPa) | 4805 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). |
|---|---|
| 250 | Bore size in mm. |
| ×500 | 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 force and speed in both directions, combined with the 500 mm stroke, makes this cylinder ideal for driving heavy shuttle tables or transfer carts that must move pallets or fixtures back and forth with identical timing and thrust.
With a rear rod available for a second forming tool or a stripper plate, this 250 mm bore cylinder can perform complex bending, clinching, or press-fit operations from both sides of a workpiece in a single actuation.
The exposed rear rod provides a rigid, guided mounting point for external position sensors, limit switches, or mechanical cam profiles, enabling precise end-of-stroke signaling without interfering with the front tooling.
Select the SCD250X500 when your application demands equal push and pull force of 23562 N at 0.5 MPa from both ends of the cylinder. If your load requires slightly less force, stepping down to the 200 mm bore SCD200 series provides 15080 N at the same pressure. For applications needing only a single working direction, the standard SC single-rod series is a more economical choice. A direct replacement must match the 250 mm bore, 500 mm stroke, PT port thread, basic mounting, and the double-rod configuration.
At a 500 mm stroke, the long unsupported rod sections on both ends are susceptible to bending under side loads. For any task where the rod tips experience radial force, install an external linear guide or switch to a guided cylinder to protect the rod bearings and ensure reliable operation.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it produces 23562 N, at 0.7 MPa it produces 32987 N, and at the maximum operating pressure of 0.9 MPa it delivers 42412 N in both directions.
Choose the SCD250X500 when you need a rear rod extension for mounting sensors, stops, or secondary tooling, or when your process requires perfectly symmetric force and speed in both directions. A single-rod SC cylinder has a higher push force due to the full piston area, but its pull force is significantly lower. If you only need force in one direction, the SC series is a more cost-effective option.
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.