Airtac SC100 Standard Cylinder SC125X400STCL
The AirTAC Airtac SC100 Standard Cylinder SC125X400STCL is a genuine double-acting standard air cylinder with a Ø125mm bore and 400mm stroke, PT1/2 air ports and adjustable end cushioning. It is used for push, pull, lift and clamp motion in industrial automation.
- BoreØ125 mm
- Stroke400 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 28 mm
About the Airtac SC100 Standard Cylinder SC125X400STCL
The AirTAC SC125X400STC is a heavy-duty double-acting tie-rod cylinder delivering 6136 N of push force at 0.5 MPa (11045 N at the 0.9 MPa maximum operating pressure). Its 32 mm diameter piston rod and 28 mm adjustable air cushion are engineered for smooth deceleration of large inertial loads, making this 400 mm stroke unit a workhorse for demanding linear automation.
This model is factory-equipped with a built-in magnet (-S) for direct mounting of CMSG/DMSG/EMSG sensors, and the centre trunnion mount (-TC) with the included TCM1 bracket (F-SC125TC) allows the cylinder to pivot freely under load. The ISO 6430 class body length A is 203 mm, giving a total extended length of approximately 603 mm.
Airtac SC100 Standard Cylinder SC125X400STCL Technical Specifications
| Model | Airtac SC100 Standard Cylinder SC125X400STCL |
|---|---|
| Series | SC big-bore tie-rod cylinder (ISO 6430 class) |
| Bore size | Ø125 mm |
| Stroke | 400 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 SC100 Standard Cylinder SC125X400STCL
| SC | Standard tie-rod cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×400 | 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 SC100 Standard Cylinder SC125X400STCL Is Used
Heavy Pallet Transfer
The 6136 N push force at 0.5 MPa easily shifts loaded pallets in material handling lines, with the trunnion mount absorbing misalignment during transfer.
Clamping & Forming Presses
Delivers up to 11045 N at 0.9 MPa for secure part clamping or light forming operations, with magnetic sensors confirming full extension and retraction.
Pivoting Conveyor Gates
The centre trunnion mount allows the cylinder body to swing, making it ideal for actuating diverter gates on high-throughput conveyor systems.
Is the Airtac SC100 Standard Cylinder SC125X400STCL the Right Cylinder?
Choose the SC125 when your application needs between 6136 N and 11045 N of push force. If you can accept a smaller envelope, stepping down to the SC100 bore reduces push force to 3927 N at 0.5 MPa, while stepping up to the SC160 bore increases it to 10053 N. For this 400 mm stroke, ensure the rod is not subjected to direct side loading; use an external guide rail or a guided cylinder if bending moments are present.
To replace an existing cylinder, match five points exactly: 125 mm bore, 400 mm stroke, PT port thread, centre trunnion (TC) mounting with the TCM1 bracket, and the built-in magnet (-S) for sensor compatibility. This SC series is a tie-rod design 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 SC100 Standard Cylinder SC125X400STCL FAQ
At the standard 0.5 MPa operating pressure, push force is 6136 N and pull force is 5734 N. At the maximum operating pressure of 0.9 MPa, push force reaches 11045 N. The theoretical maximum at 1.0 MPa is 1251 kgf.
No. The SC125 is a double-acting cylinder and will drift or drop if pressure is exhausted or the directional valve is centered. For load holding without live pressure, you must add a pilot-operated check valve or an external rod brake.
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