The AirTAC Airtac SCD Standard Cylinder SCD40X350STC is a genuine double-acting DOUBLE-ROD air cylinder: the Ø16mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø40mm bore, 350mm stroke, PT1/4 ports and adjustable end cushioning.
The SCD40X350STC is a double-acting, double-rod pneumatic cylinder that delivers identical force in both directions, producing 528 N at 0.5 MPa and up to 950 N at 0.9 MPa. With a 16 mm rod passing through both end caps, it ensures symmetric piston area and consistent speed, making it ideal for applications where a tool or sensor flag must be mounted on the rear rod end.
This model includes a built-in magnet (-S) for direct mounting of CMSG/DMSG sensors and a centre trunnion (TC) mount for pivoting motion, supplied with the TCM1 bracket. Its 350 mm stroke is well within the 1200 mm maximum for the 40 mm bore, and the adjustable air cushion (21 mm) provides smooth deceleration at both ends of its travel.
| Model | Airtac SCD Standard Cylinder SCD40X350STC |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø40 mm |
| Rod diameter | Ø16 mm (both ends) |
| Stroke | 350 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M12×1.25 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 21 mm |
| Max stroke | Up to 1200 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 | 528 N | 528 N |
| 0.7 MPa | 739 N | 739 N |
| Max (@1.0 MPa) | 108 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). |
|---|---|
| 40 | Bore size in mm. |
| ×350 | 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 through-rod design allows a workpiece to be pushed or pulled from either end, simplifying shuttle table designs where the load must move between two stations with equal force.
With the built-in magnet and a rear rod extension, a CMSG sensor can be mounted on the back end to detect piston position without interfering with the primary tooling on the front rod.
Provides a clamping force of 528 N at 0.5 MPa from both rod ends, enabling a single cylinder to actuate two opposing clamp arms simultaneously in a compact fixture.
Choose the SCD40X350STC when your mechanism requires equal push and pull thrust and a rear rod extension for dual-sided tooling or stroke confirmation. If 528 N at 0.5 MPa is insufficient, stepping up to the SCD50 bore provides 825 N under the same pressure. For applications with significant side loading, a guided cylinder is recommended, as the double-rod design improves guidance but does not replace a dedicated external guide. This cylinder is a direct replacement for another AirTAC SCD40 of the same stroke, port thread, TC mount, and magnet option.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. It produces 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at the maximum operating pressure of 0.9 MPa.
Choose the SCD when you need equal force and speed in both directions, or require a rear rod extension for mounting a sensor flag, stopper, or secondary tooling. The through-rod also provides better bearing support against side loads than a single-rod cylinder, though it is not a substitute for a fully guided unit.
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.