Airtac SCD Standard Cylinder SCD63X40TC
The AirTAC Airtac SCD Standard Cylinder SCD63X40TC 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, 40mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Rod (both ends)Ø20 mm
- Stroke40 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD63X40TC
The SCD63X40TC is a double-acting, double-rod pneumatic cylinder that outputs an identical 1402 N of force in both directions at 0.5 MPa, thanks to its balanced piston area. This 40 mm stroke model is fitted with a TC centre trunnion mount, allowing the cylinder body to pivot and accommodate angular movement during short, repetitive transfer strokes.
Both ends of the cylinder feature a 20 mm diameter rod, providing symmetrical guidance and enabling tooling or sensing flags to be attached on the rear side. The body length A(SCD) is 210 mm, and the adjustable air cushion at each end is 28 mm long, giving smooth deceleration for light, fast-cycling tasks.
Airtac SCD Standard Cylinder SCD63X40TC Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD63X40TC |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 40 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.
Theoretical Output Force (Ø63mm, double rod)
| 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.
Model Code: Airtac SCD Standard Cylinder SCD63X40TC
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 63 | Bore size in mm. |
| ×40 | 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.
Where the Airtac SCD Standard Cylinder SCD63X40TC Is Used
Two-Sided Component Transfer
The through-rod design lets you mount identical grippers or tooling on both ends, doubling throughput by picking and placing a part with each stroke direction.
Balanced Push-Pull Station
With equal force in both directions (1402 N at 0.5 MPa), this cylinder is perfect for symmetrical clamping or pressing operations where return force must match the advance force.
Anti-Rotation Linear Guide
The dual 20 mm rods provide better resistance to rotation than a single-rod cylinder, making the SCD63X40TC suitable for simple linear guides where a dedicated slide is not required.
Is the Airtac SCD Standard Cylinder SCD63X40TC the Right Cylinder?
This 63 mm bore SCD suits applications needing around 1400 N of balanced force. If your load requires less thrust, stepping down to the 50 mm bore (825 N at 0.5 MPa) saves space and air consumption; for heavier tooling, the 80 mm bore provides 2268 N. The TC trunnion mount (F-SC63TC) is ideal when the cylinder must swing through an arc, but ensure the pivot axis is correctly aligned to avoid binding.
For replacement, match the 63 mm bore, 40 mm stroke, PT port thread, and TC mounting exactly. If you need position sensing, specify the -S magnet option to use CMSG/DMSG sensors. Should the application involve significant side loads, consider an externally guided unit instead of relying solely on the double-rod's inherent guidance.
Double-rod checklist
- ✓ Need equal force / speed both directions?
- ✓ Rear rod for tooling, stopper or sensor flag?
- ✓ Better rod guidance / anti-rotation?
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Keep BOTH rod ends clear of side load and interference.
- check Adjust end cushion screws for smooth stops.
- check Use SCD mounting accessory (FA / LB / TC / TCM1).
- check Installation by qualified personnel per AirTAC docs.
Airtac SCD Standard Cylinder SCD63X40TC FAQ
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it produces 1402 N, at 0.7 MPa it delivers 1962 N, and at the maximum operating pressure of 0.9 MPa the force reaches 2523 N.
Choose the SCD when you need equal force and speed in both directions, or when you want to use the rear rod extension for mounting a sensor flag, stopper, or secondary tooling. The dual rods also provide better bearing support and inherent anti-rotation compared to a standard single-rod cylinder.
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