The AirTAC Airtac SCD Standard Cylinder SCD250X75S 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, 75mm stroke, PT1" ports and adjustable end cushioning.
The SCD250X75S is a heavy-duty double-rod pneumatic cylinder delivering a formidable 23562 N of thrust in both directions at 0.5 MPa, thanks to its dual 50 mm rods that equalize the effective piston area on each side. This symmetry eliminates force differentials, making it ideal for large fixtures that demand identical push and pull power, such as heavy transfer beams or dual-sided clamping systems.
With a 75 mm stroke, the cylinder body length A(SCD) is 435 mm, and it features a generous 40 mm adjustable air cushion to decelerate the high-inertia loads typical of this bore class. The integrated magnet allows direct mounting of CMSG, DMSG, or EMSG sensors for precise end-of-stroke detection without external brackets.
| Model | Airtac SCD Standard Cylinder SCD250X75S |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø250 mm |
| Rod diameter | Ø50 mm (both ends) |
| Stroke | 75 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. |
| ×75 | 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.
Applies equal force from both rods in large platen presses, ensuring uniform pressure distribution across the entire workpiece without mechanical linkage.
Drives a heavy shuttle table back and forth with identical thrust, using the rear rod for a counterbalance or secondary tooling mount.
The twin 50 mm rods provide inherent anti-rotation for wide tooling plates, eliminating the need for an external guide rail in short-stroke applications.
Select the SCD250 when your application requires balanced, high-force actuation from both ends. If a single-rod solution is acceptable, the SC250 provides a higher push force but unequal pull. For this 75 mm stroke, rod bending is not a primary concern, but for strokes over 300 mm, always check column strength. A direct replacement must match the 250 mm bore, 75 mm stroke, PT ports, basic mount, and the -S magnet option.
Double-rod checklist
The push and pull forces are identical at 23562 N at 0.5 MPa, 32987 N at 0.7 MPa, and 42412 N at the maximum operating pressure of 0.9 MPa. This is because the rod area is subtracted from the piston area on both sides of the double-rod design.
Choose the SCD250 when you need perfectly symmetrical force and speed in both directions, or when you need to mount tooling, a stopper, or a sensor flag on the rear rod. The SC250 single-rod version will provide a higher push force but a significantly lower pull force due to the single rod's area.
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.