Airtac SCD Standard Cylinder SCD125X800S
The AirTAC Airtac SCD Standard Cylinder SCD125X800S is a genuine double-acting DOUBLE-ROD air cylinder: the Ø32mm piston rod extends from BOTH end caps, giving equal effective area — and therefore equal force — in push and pull. Ø125mm bore, 800mm stroke, PT1/2 ports and adjustable end cushioning.
- BoreØ125 mm
- Rod (both ends)Ø32 mm
- Stroke800 mm
- Port sizePT1/2
- Rod configDouble rod (through)
- CushionAdjustable, 28 mm
About the Airtac SCD Standard Cylinder SCD125X800S
This SCD125X800S double-rod pneumatic cylinder delivers an identical 5734 N of force in both the extend and retract strokes at 0.5 MPa, thanks to its through-rod design that subtracts the same 32 mm rod area from each piston side. The 800 mm stroke is well within the 1500 mm maximum standard stroke for this 125 mm bore, and the adjustable air cushion (28 mm length) decelerates the piston smoothly at both ends of travel.
A built-in magnet band on the piston allows CMSG, DMSG, or EMSG solid-state sensors to clamp directly onto the tie-rod barrel for non-contact position sensing, making it ready for sequence control without external flags. The cylinder body length A is 291 mm, and the M27x2 rod thread on both ends lets you mount tooling, stripper plates, or a rear stroke-adjustment stop with equal convenience.
Airtac SCD Standard Cylinder SCD125X800S Technical Specifications
| Model | Airtac SCD Standard Cylinder SCD125X800S |
|---|---|
| Series | SCD double-rod tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Rod diameter | Ø32 mm (both ends) |
| Stroke | 800 mm |
| Rod configuration | Double rod — rod through both caps |
| Acting type | Double acting |
| Port size | PT1/2 |
| Rod thread | M27×2 |
| 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 – 500 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 (Ø125mm, double rod)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 5734 N | 5734 N |
| 0.7 MPa | 8027 N | 8027 N |
| Max (@1.0 MPa) | 1169 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 SCD125X800S
| SCD | Double-rod tie-rod cylinder series (rod out both ends). |
|---|---|
| 125 | Bore size in mm. |
| ×800 | 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 SCD125X800S Is Used
Two-Sided Transfer Shuttle
The equal force and speed in both directions make this cylinder ideal for shuttling a workpiece pallet between two stations, where the rear rod can carry a counterbalance mass to smooth motion.
Symmetric Clamping & Straightening
Apply identical clamping pressure from both sides of a weldment or assembly jig. The through-rod provides inherent anti-rotation, helping keep jaw alignment true under load.
Rear-Mounted Stroke Sensing
With the built-in -S magnet, you can mount a DMSG sensor on the rear end cap to confirm full retraction, a clean solution when the front rod area is crowded with tooling.
Is the Airtac SCD Standard Cylinder SCD125X800S the Right Cylinder?
Step up to the SCD160 (9425 N at 0.5 MPa) if your dual-sided tooling exceeds the 5734 N force this 125 mm bore provides; step down to the SCD100 (3681 N) for a lighter, more compact assembly. If you only need force from one end, the single-rod SC125X800 cuts cost and overall length. For strokes of 800 mm, the long unsupported rod on both ends can amplify side-load deflection—consider an external linear guide or switch to a guided cylinder if the tooling applies any off-axis force. To replace an existing unit, match the 125 mm bore, 800 mm stroke, PT port thread, basic mounting style, and the -S magnet 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 SCD125X800S FAQ
Because it is a double-rod cylinder, the effective piston area is identical on both sides. The force is 5734 N at 0.5 MPa, 8028 N at 0.7 MPa, and 10321 N at the maximum operating pressure of 0.9 MPa. Both directions produce the same output.
Choose the SCD when you need identical force and speed in both directions, or when you need to mount tooling, a stop, or a sensor target on the rear rod. The through-rod also provides better guidance and resistance to rotation than a single-rod cylinder, though it is not a substitute for an external guide under heavy side loads.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SCD Double-Rod Cylinders
Request a Quote for Airtac SCD Standard Cylinder SCD125X800S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.