Airtac SCD Standard Cylinder SCD63X502S
The AirTAC Airtac SCD Standard Cylinder SCD63X502S 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, 502mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Rod (both ends)Ø20 mm
- Stroke502 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD63X502S
The SCD63X502S is a double-acting, double-rod pneumatic cylinder delivering identical force in both directions—2523 N of thrust at 0.9 MPa. With a 20 mm rod passing through both end caps, it provides symmetric actuation and better bearing support than a single-rod design, making it ideal for applications where tooling or sensors are mounted on the rear rod. This specific model includes a built-in magnet, allowing CMSG/DMSG/EMSG sensors to be clamped directly onto the tie-rod barrel for non-contact position sensing.
At 502 mm, this stroke exceeds the standard maximum of 1500 mm for the 63 bore, marking it as a non-standard, made-to-order configuration. The body length A(SCD) is 210 mm, and the adjustable air cushion on each end cap is 28 mm, providing smooth deceleration. The cylinder operates on filtered air from 0.15 to 1.0 MPa and uses PT1/4 ports. Its through-rod construction is a robust choice for dual-sided tooling plates or transfer mechanisms where equal speed and force are critical.
Airtac SCD Standard Cylinder SCD63X502S Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD63X502S |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 502 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 SCD63X502S
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 63 | Bore size in mm. |
| ×502 | 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 SCD63X502S Is Used
Dual-Sided Transfer Shuttles
The through-rod design lets you mount a workpiece carrier on the front rod and a counterbalance or secondary tool on the rear, creating a perfectly balanced shuttle for pick-and-place systems.
Stroke-End Sensing with Magnet
The built-in magnet (-S option) works with CMSG/DMSG sensors clamped to the barrel, providing reliable end-of-stroke detection for the rear rod without needing external flag brackets.
Non-Rotating Pusher Stations
The dual-rod support inherently resists rotation better than a single rod, making this 63 bore unit a solid choice for pushing or ejecting parts where maintaining orientation is important.
Is the Airtac SCD Standard Cylinder SCD63X502S the Right Cylinder?
Choose the SCD63 when your application needs roughly 1400 N of force at 0.5 MPa in both directions. If you require more force, stepping up to the SCD80 provides 2268 N at the same pressure; for less force, the SCD50 delivers 825 N. Because this is a double-rod cylinder, it is the correct choice only when you need the rod to protrude from both ends for dual tooling or rear-mounted flags. If you only need single-sided actuation, the single-rod SC63 series is a more compact and cost-effective alternative. For a long 502 mm stroke, be mindful of rod bending under side loads; a self-aligning rod coupler or an external guide system is recommended to protect the rod bearings. This cylinder is a direct replacement for an existing AirTAC SCD63X502S, matching bore, stroke, PT thread, basic mounting, and the integrated magnet sensor option.
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 SCD63X502S FAQ
Because it is a double-rod cylinder, the push and pull forces are equal. The effective piston area is calculated by subtracting the 20 mm rod area from the 63 mm bore area. This gives a force of 1402 N at 0.5 MPa, 1962 N at 0.7 MPa, and 2523 N at the maximum operating pressure of 0.9 MPa.
Choose the SCD when your design requires the piston rod to extend from both ends of the cylinder body. Common reasons include mounting a tool on one end and a sensor flag or cam on the other, needing perfectly equal force and speed in both directions, or using the dual-rod support to improve resistance to side loads and rotation compared to a single-rod cylinder.
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