Airtac SCD Standard Cylinder SCD80X170
The AirTAC Airtac SCD Standard Cylinder SCD80X170 is a genuine double-acting DOUBLE-ROD air cylinder: the Ø25mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø80mm bore, 170mm stroke, PT3/8 ports and adjustable end cushioning.
- BoreØ80 mm
- Rod (both ends)Ø25 mm
- Stroke170 mm
- Port sizePT3/8
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD80X170
The SCD80X170 is a double-acting, double-rod pneumatic cylinder that outputs identical force in both directions because the 25 mm rod occupies both pressure chambers. At a common 0.5 MPa line pressure, it generates 2268 N of thrust whether extending or retracting, making actuator sizing symmetrical and predictable. The through-rod design also provides better bearing support than a single-rod cylinder, helping to resist minor side loads and rotation during the 170 mm stroke.
This tie-rod cylinder uses a 28 mm adjustable air cushion at each end to decelerate the piston quietly, and the body length A dimension is 257 mm. The standard PT3/8 ports supply filtered air, and the M20x1.5 rod thread on both ends lets you mount tooling, flags, or stops on either side. It operates from 0.15 to 1.0 MPa and is rated for speeds of 30-800 mm/s.
Airtac SCD Standard Cylinder SCD80X170 Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD80X170 |
|---|---|
| Series | SCD double-rod tie-rod cylinder |
| Bore size | Ø80 mm |
| Rod diameter | Ø25 mm (both ends) |
| Stroke | 170 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT3/8 |
| Rod thread | M20×1.5 |
| 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 (Ø80mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | 3175 N |
| Max (@1.0 MPa) | 463 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 SCD80X170
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 80 | Bore size in mm. |
| ×170 | 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 SCD80X170 Is Used
Bidirectional Shuttle Tables
The equal force and speed in both directions make the SCD80X170 ideal for shifting a transfer plate or tooling carriage back and forth with identical cycle characteristics.
Dual-Sided Actuation
Use the rear rod extension to operate a secondary mechanism, such as a stripper plate or a limit switch cam, synchronized perfectly with the primary working stroke.
Non-Rotating Pushers
The dual-rod support naturally resists piston rotation, allowing the SCD80X170 to push components along a guided path without adding an external anti-rotate bracket.
Is the Airtac SCD Standard Cylinder SCD80X170 the Right Cylinder?
Choose the SCD80X170 when you need equal push-pull force and a rod accessible from both ends. If your load requires less thrust, the 63 mm bore SCD63 provides 1402 N at 0.5 MPa, saving space and air consumption. For higher force, step up to the 100 mm bore SCD100 at 3681 N. If you only need a single working end, the SC single-rod series is lighter and more compact.
To replace an existing SCD80X170, match the 80 mm bore, 170 mm stroke, PT3/8 port thread, and the basic mounting configuration. If a built-in magnet is needed for sensors, specify the -S suffix. For strokes over 300 mm in this bore, be aware that the unsupported rod mass increases; consider an external guide rail to prevent rod bending under side load.
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 SCD80X170 FAQ
Because it is a double-rod cylinder, the push and pull forces are identical. At 0.5 MPa it produces 2268 N, at 0.7 MPa it is 3175 N, and at the maximum operating pressure of 0.9 MPa it reaches 4082 N.
Pick the SCD when you need equal force and speed in both directions, or when you require a rear rod end for mounting sensors, cams, or secondary tooling. The through-rod also improves guiding accuracy and reduces piston rotation compared to a standard single-rod SC cylinder.
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