Airtac AIRTAC SC125-160 Standard Cylinder SC125X45
The AirTAC Airtac AIRTAC SC125-160 Standard Cylinder SC125X45 is a genuine double-acting standard air cylinder with a Ø125mm bore and 45mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke45 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac AIRTAC SC125-160 Standard Cylinder SC125X45
The SC125X45 is a double-acting pneumatic cylinder delivering a robust 6136 N push force at 0.5 MPa (11045 N at the maximum operating pressure of 0.9 MPa). Its 45 mm stroke suits short, high-force clamping, pressing, or ejecting tasks where space along the cylinder axis is limited.
This ISO 6430 class tie-rod cylinder uses a 32 mm diameter piston rod with M27×2 male knuckle threads and PT1/2 ports. The adjustable air cushion (28 mm length) decelerates the piston smoothly at end-of-stroke, reducing impact noise and wear. Body length A is 203 mm, giving a compact extended length of approximately 248 mm.
Airtac AIRTAC SC125-160 Standard Cylinder SC125X45 Technical Specifications
| Model | Airtac AIRTAC SC125-160 Standard Cylinder SC125X45 |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 45 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 SC125X45
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×45 | 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 SC125X45 Is Used
Heavy-Duty Clamping
The 6136 N force at 0.5 MPa makes the SC125X45 ideal for pneumatic clamping fixtures in welding, machining, or assembly cells where a short, powerful stroke is needed.
Die Ejection & Forming
Delivers a controlled 45 mm punch stroke for ejecting parts from dies or compact forming operations, with the adjustable cushion protecting tooling at end-of-stroke.
Pallet Stop & Gate Actuation
Use this cylinder for heavy-duty pallet stops or material-handling gates. The short stroke and high force securely position loads on conveyors without taking up excessive linear space.
Is the Airtac AIRTAC SC125-160 Standard Cylinder SC125X45 the Right Cylinder?
For applications needing more force, step up to the 160 mm bore SC160 series, which provides 10053 N push at 0.5 MPa. If a shorter stroke with lower force is acceptable, the 100 mm bore SC100 series offers 3927 N at 0.5 MPa. The 45 mm stroke is a standard length for this bore.
When replacing an existing cylinder, match five key points: 125 mm bore, 45 mm stroke, PT1/2 port thread, basic (no bracket) mounting, and the absence of a built-in magnet. The SC125 is a tie-rod cylinder and is not dimensionally interchangeable with ISO 15552 profile cylinders.
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 SC125X45 FAQ
At 0.7 MPa (7 bar) the SC125X45 produces 8590 N of push force and 5734 N of pull force. The theoretical maximum force at 1.0 MPa is 1251 kgf.
This specific model (SC125X45) does not include the -S magnet option, so standard reed or solid-state sensors cannot be used directly on the barrel. To use sensors, order the SC125X45-S variant, which includes a built-in magnet compatible with CMSG, DMSG, and EMSG switches.
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