Airtac SCD Standard Cylinder SCD63X75SLB
The AirTAC Airtac SCD Standard Cylinder SCD63X75SLB 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, 75mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Rod (both ends)Ø20 mm
- Stroke75 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD63X75SLB
The SCD63X75SLB is a double-acting, double-rod pneumatic cylinder delivering identical push and pull force of 1402 N at 0.5 MPa, thanks to its through-rod design that subtracts the 20 mm rod area from both sides. This 75 mm stroke unit comes factory-equipped with a built-in magnet (S) for direct mounting of CMSG/DMSG sensors and LB foot mounts (F-SC63LB) for secure surface installation.
With a body length A of 210 mm and an adjustable air cushion of 28 mm at each end, it decelerates the piston smoothly in both directions. The equal force output and rear rod extension make it ideal for fixtures requiring simultaneous two-sided tooling or a rear-mounted position flag, all within the standard stroke range for the 63 mm bore.
Airtac SCD Standard Cylinder SCD63X75SLB Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD63X75SLB |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 75 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 SCD63X75SLB
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 63 | 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.
Where the Airtac SCD Standard Cylinder SCD63X75SLB Is Used
Two-Sided Actuation
The through-rod provides a mounting point on both ends, enabling a single cylinder to operate two mechanisms in perfect synchronization with equal force and speed.
Shuttle Transfer
Ideal for transferring parts between two parallel conveyors. The rear rod can carry a counterbalance or a second pusher, doubling throughput with one actuator.
Rear Stroke Sensing
The built-in magnet allows CMSG/DMSG sensors to be placed on the barrel, while the rear rod provides a convenient hard point for an external sensor flag or cam to monitor end-of-stroke.
Is the Airtac SCD Standard Cylinder SCD63X75SLB the Right Cylinder?
Choose the SCD63 bore when your application needs around 1400 N of balanced force in both directions. If you require roughly 825 N, step down to the SCD50; for about 2268 N, move up to the SCD80. This double-rod design is the correct choice over a single-rod SC when you need a rear rod extension for a secondary tool, a sensor flag, or better resistance to rod rotation, but it is not a substitute for a guided cylinder under significant side loads.
For a drop-in replacement, match the 63 mm bore, 75 mm stroke, PT port thread, LB foot mounting, and the integrated magnet (S). Any alternative must replicate this exact configuration to ensure mechanical and sensor compatibility.
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 SCD63X75SLB FAQ
The push and pull forces are identical because the piston rod extends through both end caps. At 0.5 MPa it produces 1402 N, at 0.7 MPa it is 1962 N, and at the maximum operating pressure of 0.9 MPa it reaches 2523 N.
You would select the SCD when you need a rear rod extension for mounting tooling, a stopper, or a sensor flag, or when you require perfectly equal force and speed in both directions. The dual-rod support also provides better guidance and anti-rotation properties than a single-rod cylinder.
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