Airtac SGC Standard Cylinder SGC125X120STC
The AirTAC Airtac SGC Standard Cylinder SGC125X120STC is a genuine double acting ISO 15552 (orig. ISO 6431) tie-rod air cylinder with a Ø125mm bore and 120mm stroke, G1/2 air ports and adjustable end cushioning. Its large-bore tie-rod build delivers high thrust and drops into standardized ISO 15552 mounting on heavy automation.
- BoreØ125 mm
- Stroke120 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- CushionAdjustable, 40 mm
About the Airtac SGC Standard Cylinder SGC125X120STC
Delivering 6136 N of push force at 0.5 MPa, this double-acting large-bore cylinder brings serious thrust to automated lines. The SGC125X120STC features a 125 mm bore, a 120 mm stroke, and a built-in magnet for position sensing. Four steel tie rods clamp the aluminum barrel to the covers, ensuring high rigidity under heavy loads, while the two-way piston seal maintains an internal oil reservoir for extended service life. A G1/2 port supplies the air, and the unit operates at speeds between 30 and 500 mm/s.
Because it follows the standardized ISO 15552 mounting interface, this model drops directly into existing large-bore fixtures and trunnion accessories. For practical sizing, plan for about 3682 N of real work at 0.5 MPa, which safely lifts roughly 313 kg vertically with a 2:1 margin. The included -S magnet supports CMSG, DMSG, and EMSG switches for precise end-of-stroke detection.
Airtac SGC Standard Cylinder SGC125X120STC Technical Specifications
| Model | Airtac SGC Standard Cylinder SGC125X120STC |
|---|---|
| Series | SGC ISO 15552 tie-rod cylinder |
| Bore size | Ø125 mm |
| Stroke | 120 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2.0 |
| 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, 40 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SGC datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Thread options: PT (blank) / G. TPU seals are not available for the Ø250 bore (NBR / Viton only).
Theoretical Output Force (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SGC Standard Cylinder SGC125X120STC
| SGC | ISO 15552 tie-rod cylinder (double-acting type). |
|---|---|
| 125 | Bore size in mm (125 / 160 / 200 / 250). |
| ×120 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
SGC-family variants: SGC (double acting), SGCD (double rod), SGCJ (adjustable stroke). Mounting: LB / FA / FB / CA / CB / CR / TC / FTC / TCM1 / TCM2. Seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SGC Standard Cylinder SGC125X120STC Is Used
Pallet Diversion
Uses the 6136 N push force to deflect heavy wooden pallets onto side lanes within high-throughput packaging lines.
Stacker Elevation
Raises loaded material platforms, safely lifting components weighing up to 313 kg with a 2:1 vertical margin.
Press Ejection
Cycles the 120 mm stroke to push formed metal parts out of hydraulic presses using the TC trunnion mount.
Is the Airtac SGC Standard Cylinder SGC125X120STC the Right Cylinder?
This 125 mm bore sits at the entry point of the SGC large-bore family, offering 6136 N push and 5734 N pull at 0.5 MPa. If your application requires less force, stepping down means leaving the SGC range entirely for a smaller ISO 15552 series; if you need more power, the 160 mm bore upgrades thrust significantly to 10053 N at 0.5 MPa. The TC trunnion mount specified here allows pivoting articulation, ideal for mid-stroke loads. Keep in mind that a standard double-acting cylinder drifts when air is lost or the valve is centered, as the adjustable air cushion only decelerates the piston near the ends rather than locking it. For vertical or suspended loads that must hold position, add an external rod lock or a pilot-operated check valve.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Long-stroke side load — support the rod end
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; support long strokes at the rod end.
- check Set cushions to minimum, then release gradually.
- check Use correct mounting accessory (LB/FA/FB/CA/CB/CR/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SGC Standard Cylinder SGC125X120STC FAQ
At 0.5 MPa it provides 6136 N push and 5734 N pull. At 0.7 MPa it provides 8590 N push and 8028 N pull. The theoretical maximum force is 1251 kgf at 1.0 MPa. This 125 mm bore cylinder uses a G1/2 air port and features a 32 mm piston rod with an M27x2.0 rod-end thread.
No, the adjustable 40 mm air cushions at both ends only decelerate the piston near the stroke limits; they do not act as a brake. If air is lost or the valve is centered, the rod will drift. To maintain vertical position, you must install an external rod lock or a pilot-operated check valve.
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