Airtac AIRTAC SC125-160 Standard Cylinder SC125X25STC
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X25STC is a genuine double-acting standard air cylinder with a Ø125mm bore and 25mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke25 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X25STC
The SC125X25STC is a double-acting tie-rod cylinder delivering a substantial 6136 N push force at 0.5 MPa (11045 N at 0.9 MPa), making it ideal for short, high-force clamping or pressing operations. Its 125 mm bore houses a robust 32 mm diameter piston rod with an M27x2 male thread, and the body length A measures 203 mm.
This model includes a built-in magnet (-S suffix) for direct mounting of CMSG/DMSG/EMSG sensors, and a centre trunnion (TC) for pivoting motion. The trunnion ships with the TCM1 bracket, allowing the cylinder to swing as the load articulates. It uses standard PT ports and TPU seals rated for -20 to +70 °C.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X25STC Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X25STC |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 25 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 SC125X25STC
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×25 | 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 SC125X25STC Is Used
Heavy Clamping
Short-stroke high-force hold-down in welding fixtures, leveraging 11045 N of thrust at full pressure.
Die Cushion
Pivoting actuation in stamping presses where the trunnion mount absorbs misalignment.
Material Handling
Swinging transfer arm on a conveyor diverter, with sensor feedback confirming retraction.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X25STC the Right Cylinder?
For applications needing more force, stepping up to the SC160 bore provides 10053 N at 0.5 MPa. If a shorter body is required, the SC100 bore offers 3927 N. This 25 mm stroke is a standard offering within the 1500 mm maximum for the 125 bore. When replacing, match bore, stroke, PT port thread, TC mount, and the -S magnet option to ensure drop-in 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 SC125X25STC FAQ
At 0.5 MPa (5 bar), it pushes with 6136 N and pulls with 5734 N. At the maximum operating pressure of 0.9 MPa, the push force reaches 11045 N.
No. The AirTAC SC series is a tie-rod cylinder that is physically shorter than an ISO 15552 profile cylinder. It will only interchange with another AirTAC SC tie-rod cylinder of the same bore, stroke, port, mounting, and magnet configuration.
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