Airtac AIRTAC SC125-160 Standard Cylinder SC125X680S
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X680S is a genuine double-acting standard air cylinder with a Ø125mm bore and 680mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke680 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X680S
The AirTAC SC125X680S is a double-acting single-rod tie-rod cylinder delivering 6136 N push force at 0.5 MPa and up to 11045 N at the max operating pressure of 0.9 MPa. Its 680 mm stroke is well within the 1500 mm maximum standard stroke for the 125 mm bore, and the 32 mm piston rod provides robust linear guidance for medium-to-heavy pneumatic tasks.
This model includes a built-in magnet (-S suffix), allowing CMSG, DMSG, or EMSG reed and solid-state sensors to clamp directly onto the barrel for contactless position sensing. The adjustable air cushion (28 mm length) decelerates the piston smoothly at both ends, protecting end caps and reducing noise in high-cycle applications.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X680S Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X680S |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 680 mm |
| 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 SC series datasheet. Operating pressure 0.15–1.0 MPa, proof pressure 1.5 MPa, temperature −20 to +70 °C. Confirm against the product label before installation. Thread options: PT (standard) / G.
Theoretical Output Force (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (approx.) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac AIRTAC SC125-160 Standard Cylinder SC125X680S
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×680 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related variants: SCD (double rod), SCJ (adjustable stroke), SCT (multi-position). Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Where the Airtac AIRTAC SC125-160 Standard Cylinder SC125X680S Is Used
Pallet Transfer & Stops
The 680 mm stroke and 6136 N push force at 0.5 MPa reliably transfer heavy pallets or operate robust end-stops in conveyor systems, with the built-in magnet enabling precise mid-stroke and end-of-stroke sensor feedback.
Heavy Press-Fit Assembly
Delivers up to 11045 N of push force at 0.9 MPa for pressing bearings, bushings, or pins into housings. The adjustable cushion absorbs the high inertial shock of heavy tooling at the end of the 680 mm stroke.
Large Gate & Damper Actuation
Operates heavy slide gates or dampers in bulk material handling. The tie-rod construction allows field maintenance, and the -S magnet provides open/closed position confirmation via clamp-on sensors.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X680S the Right Cylinder?
Select the SC125 when the SC100's 3927 N push at 0.5 MPa is marginal—stepping up to the 125 mm bore provides a 56% force increase. For strokes of 300 mm or more, such as this 680 mm unit, evaluate side loads carefully; an unsupported 32 mm rod at full extension is vulnerable to bending. Use an external linear guide or rod-alignment coupler to protect the rod bearing and seals from radial forces.
For replacement, match five points: 125 mm bore, 680 mm stroke, PT port thread, the built-in magnet (-S), and the basic mounting configuration. This tie-rod cylinder is shorter than an ISO 15552 profile and is not a dimensional drop-in for that standard—it replaces another AirTAC SC125 of the same configuration.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X680S FAQ
At 0.7 MPa operating pressure, the theoretical push force is 8590 N and the pull force on the retract stroke is 5734 N. These values assume a static condition; for dynamic applications, factor in a load ratio of 50-70%.
No, the SC series is a tie-rod cylinder that is physically shorter than an ISO 15552 profile cylinder and does not share its mounting dimensions. It is a direct replacement only for another AirTAC SC125 tie-rod cylinder with matching bore, stroke, PT ports, and magnet option.
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