Airtac SCD Standard Cylinder SCD63X175STC
The AirTAC Airtac SCD Standard Cylinder SCD63X175STC 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, 175mm stroke, PT1/4 ports and adjustable end cushioning.
- BoreØ63 mm
- Rod (both ends)Ø20 mm
- Stroke175 mm
- Port sizePT1/4
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD63X175STC
The SCD63X175STC delivers identical 1402 N of force in both directions at 0.5 MPa, thanks to its double-rod design where the 20 mm rod passes through both end caps. This symmetry eliminates force differentials, making it ideal for applications requiring consistent speed and thrust in each stroke, such as dual-sided tooling or linked transfer mechanisms.
This 63 mm bore model features a 175 mm stroke with an adjustable air cushion of 28 mm at each end to decelerate the piston smoothly. The built-in magnet (S suffix) allows direct mounting of CMSG/DMSG sensors on the tie-rod barrel, while the TC centre trunnion mount, supplied with the TCM1 bracket, enables the cylinder to pivot freely under swinging loads.
Airtac SCD Standard Cylinder SCD63X175STC Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD63X175STC |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø63 mm |
| Rod diameter | Ø20 mm (both ends) |
| Stroke | 175 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 SCD63X175STC
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 63 | Bore size in mm. |
| ×175 | 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 SCD63X175STC Is Used
Two-Sided Actuation
The through-rod provides a mounting point on both ends, allowing a single SCD63X175STC to operate two fixtures simultaneously with perfectly synchronized 1402 N thrust in each direction.
Pivoting Transfer Shuttle
With the TC centre trunnion mount, this cylinder can swing to accommodate the arc of a transfer arm, moving parts between two conveyor lines with equal force and speed on the extend and retract strokes.
Rear-Position Sensing
The built-in magnet allows CMSG reed switches to be mounted on the rear barrel, detecting the retracted position of the rear rod. This is useful for confirming the home position of a secondary tool or counterbalance.
Is the Airtac SCD Standard Cylinder SCD63X175STC the Right Cylinder?
Choose the SCD63 bore when the 1402 N force at 0.5 MPa matches your load; step up to the SCD80 for 2268 N or down to the SCD50 for 825 N if your force requirements change. This double-rod unit is the right choice when you need a rear rod extension for a stopper bolt, sensor flag, or secondary tooling, but if your application involves significant side loads, a guided cylinder is necessary—the through-rod improves guidance but is not a substitute for external linear bearings.
For direct replacement, match the 63 mm bore, 175 mm stroke, PT port thread, and ensure the replacement also carries the -S magnet and TC centre trunnion mounting. The F-SC63TC trunnion bracket is included with this model. For strokes of 175 mm, rod bending is generally not a concern under axial loads, but always align the load to prevent binding.
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 SCD63X175STC FAQ
Because the 20 mm rod occupies both sides of the piston, the push and pull forces are equal. At 0.5 MPa you get 1402 N, at 0.7 MPa you get 1962 N, and at the maximum operating pressure of 0.9 MPa the force is 2523 N in both directions.
Choose the SCD when you need a rear rod extension to mount a sensor flag, stopper, or secondary tool, or when you require perfectly equal force and speed in both directions. The through-rod also provides better support for the piston, reducing uneven bushing wear compared to a single-rod cylinder in high-cycle applications.
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