Airtac AIRTAC SC125-160 Standard Cylinder SC125X1800STC
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X1800STC is a genuine double-acting standard air cylinder with a Ø125mm bore and 1800mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke1800 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X1800STC
The AirTAC SC125X1800STC is a large-bore double-acting tie-rod cylinder delivering 6136 N of push force at 0.5 MPa and up to 11045 N at the maximum operating pressure of 0.9 MPa. With a 32 mm diameter piston rod and M27x2 knuckle thread, this model is built for heavy industrial linear motion tasks requiring an extended 1800 mm stroke.
This non-standard stroke length exceeds the standard 1500 mm maximum for the 125 mm bore, making it a made-to-order configuration for applications needing extra reach. It comes equipped with a built-in magnet (S suffix) for direct mounting of CMSG/DMSG/EMSG sensors and a centre trunnion mount (TC suffix) with the TCM1 bracket for pivoting motion. The adjustable pneumatic cushion at each end is 28 mm, softening end-of-stroke impact for the high-inertia loads typical of this force class.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X1800STC Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X1800STC |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 1800 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 SC125X1800STC
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×1800 | 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 SC125X1800STC Is Used
Long-Reach Material Pusher
Pushing heavy pallets or bins off a wide conveyor or into a stretch-wrapper with an 1800 mm stroke, using the trunnion mount to pivot into position.
Agricultural Equipment Actuation
Controlling a large chute door or discharge gate on a harvester or silage trailer, where the long stroke and pivoting action provide full range of motion.
Heavy-Duty Clamping & Riveting
Applying 11045 N of clamping force in a large welding or riveting fixture, with the centre trunnion allowing the cylinder body to swing for part loading clearance.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X1800STC the Right Cylinder?
Selecting the SC125X1800STC means sizing for a 125 mm bore where the 0.5 MPa push force of 6136 N meets the load requirement. If your load is lighter, stepping down to the 100 mm bore reduces push force to 3927 N at the same pressure, saving energy and space. For higher force needs, the 160 mm bore offers 10053 N at 0.5 MPa. Given the exceptionally long 1800 mm stroke, side-load management is critical—the 32 mm rod is susceptible to bending under off-axis forces. Always use an external guide rail or rod-alignment coupler to protect the rod bearings and seals, or consider a guided cylinder for integrated support. For a direct replacement, match the 125 mm bore, 1800 mm stroke, PT port thread, centre trunnion (TC) mount, and the integrated magnet (-S) sensor compatibility.
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 SC125X1800STC FAQ
At the maximum operating pressure of 0.9 MPa, the push force is 11045 N. The theoretical force at 1.0 MPa (not for continuous operation) is 1251 kgf. The pull force on the retract stroke is lower due to the rod area, delivering 5734 N at 0.5 MPa.
No, 1800 mm is a non-standard stroke exceeding the 1500 mm standard maximum for the 125 mm bore. For such a long extension, you must guide the load externally or use a rod-alignment coupler. The cylinder's rod bearings are not designed to support significant side loads, especially at full extension.
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