Airtac SGC Standard Cylinder SGC125X185STC
The AirTAC Airtac SGC Standard Cylinder SGC125X185STC is a genuine double acting ISO 15552 (orig. ISO 6431) tie-rod air cylinder with a Ø125mm bore and 185mm 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
- Stroke185 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- CushionAdjustable, 40 mm
About the Airtac SGC Standard Cylinder SGC125X185STC
Delivering 6136 N of push force at 0.5 MPa, this double-acting 125 mm bore cylinder brings serious thrust to large-scale automation. The SGC125X185STC features a 185 mm stroke and utilizes a robust tie-rod construction, where four steel rods clamp the aluminum barrel to the covers for high structural rigidity. A two-way piston seal maintains an internal oil reservoir to ensure long-lasting lubrication and seal life.
Because it adheres to the ISO 15552 mounting interface, this model drops seamlessly into existing large-bore fixtures and shares standardized accessory dimensions. Equipped with a built-in piston magnet (-S), it supports CMSG, DMSG, and EMSG position switches. In practical terms, you should plan for about 3682 N of real work at 0.5 MPa, which equates to lifting roughly 313 kg vertically with a 2:1 safety margin. The unit uses a G1/2 air port and a M27x2.0 rod thread.
Airtac SGC Standard Cylinder SGC125X185STC Technical Specifications
| Model | Airtac SGC Standard Cylinder SGC125X185STC |
|---|---|
| Series | SGC ISO 15552 tie-rod cylinder |
| Bore size | Ø125 mm |
| Stroke | 185 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 SGC125X185STC
| SGC | ISO 15552 tie-rod cylinder (double-acting type). |
|---|---|
| 125 | Bore size in mm (125 / 160 / 200 / 250). |
| ×185 | 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 SGC125X185STC Is Used
Press Fit Assembly
Drives bearings or bushings into heavy machinery housings, utilizing the 6136 N push force at 0.5 MPa to seat components reliably without hydraulic fluid.
Pallet Stopper Gate
Acts as a robust 185 mm stroke blocking gate on high-throughput conveyor lines, absorbing the impact of incoming pallets while the TC trunnion mount handles pivot stresses.
Plastic Mold Extraction
Pushes large molded plastic parts out of injection machinery tooling, where the 125 mm bore provides the immediate breakaway force needed to overcome mold release friction.
Is the Airtac SGC Standard Cylinder SGC125X185STC the Right Cylinder?
When sizing this 125 mm bore option, verify your actual load requirements against the 6136 N push rating at 0.5 MPa. If your application demands less force, stepping down is not possible within the SGC large-bore range as 125 mm is the smallest available size; however, if you need substantially more power, the 160 mm bore offers 10053 N of push force at the same pressure. This specific SKU includes the TC trunnion mount, allowing pivoting central mounting that pairs perfectly with the ISO 15552 interface. The included -S magnet enables electronic or reed sensor tracking along the stroke.
Keep in mind that a standard double-acting cylinder relies entirely on continuous air pressure to maintain its position; if air is lost or the valve is centered, the piston will drift, and the adjustable 40 mm air cushions only decelerate the rod near stroke ends rather than locking the load. For vertical or suspended loads that must be held securely during pressure loss, integrate an external pilot-operated check valve or a dedicated rod lock.
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 SGC125X185STC FAQ
At 0.5 MPa it provides 6136 N push and 5734 N pull; at 0.7 MPa it delivers 8590 N push and 8028 N pull, with a theoretical maximum of 1251 kgf at 1.0 MPa. It has a 125 mm bore, 185 mm stroke, G1/2 port, M27x2.0 rod thread, and operates at speeds of 30-500 mm/s.
Yes, the tie-rod construction conforms strictly to ISO 15552 mounting interface dimensions, allowing you to use standard foot, flange, clevis, or trunnion accessories. This specific TC-mounted model also includes a built-in magnet (-S), making it fully compatible with CMSG, DMSG, and EMSG position switches.
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