The AirTAC Airtac SCD Standard Cylinder SCD63X150STC is a genuine double-acting DOUBLE-ROD air cylinder: the Ø20mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø63mm bore, 150mm stroke, PT1/4 ports and adjustable end cushioning.
The SCD63X150STC is a double-acting, double-rod pneumatic cylinder that provides identical thrust in both directions—1402 N at 0.5 MPa and up to 2523 N at the maximum 0.9 MPa operating pressure. Because the 20 mm piston rod extends from both end caps, the effective pressure area is balanced, making this actuator ideal for applications where a tool or sensor flag must be mounted on the rear rod, or where symmetrical force and speed are critical.
This model is configured with a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors, and a centre trunnion (TC) mount that ships with the TCM1 bracket (order code F-SC63TC). The trunnion allows the cylinder body to pivot, accommodating swinging loads. With a 150 mm stroke, it operates well within the 1500 mm maximum standard stroke for the 63 bore, and its adjustable air cushion (28 mm length) decelerates the piston smoothly at each end of travel.
| Model | Airtac SCD Standard Cylinder SCD63X150STC |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 150 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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, 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 | 1402 N | 1402 N |
| 0.7 MPa | 1962 N | 1962 N |
| Max (@1.0 MPa) | 286 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). |
|---|---|
| 63 | Bore size in mm. |
| ×150 | 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 1402 N at 0.5 MPa ensures a transfer shuttle moves with identical speed and power in both directions, preventing product shifting during rapid reciprocating motion.
With the built-in magnet and a rear rod extension, a DMSG sensor can be mounted on the back barrel to confirm full retraction, a setup impossible with a single-rod cylinder.
Mount a pusher on the front rod and a stripper plate on the rear rod. The through-rod design keeps both tools perfectly aligned and actuated by a single, balanced cylinder.
Choose the SCD63 bore when your application needs around 1400 N of balanced force at standard plant pressure. If you require more thrust, stepping up to the SCD80 bore provides 2268 N at the same 0.5 MPa. For purely linear, single-sided push tasks, the single-rod SC63 is a more economical choice, but it cannot provide the rear rod access or perfectly symmetrical force of this double-rod unit. For direct replacement, match the 63 mm bore, 150 mm stroke, PT port thread, centre trunnion (TC) mounting, and the integrated magnet (-S) to ensure full mechanical and sensing compatibility.
Double-rod checklist
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it outputs 1402 N, at 0.7 MPa it outputs 1962 N, and at the maximum operating pressure of 0.9 MPa it reaches 2523 N.
Choose an SCD when you need a rear rod extension for mounting tooling, a cam, or a sensor flag, or when your process demands perfectly equal force and speed in both directions. The through-rod also provides better support for the piston, reducing uneven bushing wear in high-cycle applications, though it is not a substitute for an externally guided cylinder under heavy side loads.
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