Airtac SGC Standard Cylinder SGC125X20S
The AirTAC SGC Standard Cylinder SGC125X20S is a genuine double acting ISO 15552 (orig. ISO 6431) tie-rod air cylinder with a Ø125mm bore and 20mm 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
- Stroke20 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- CushionAdjustable, 40 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SGC Standard Cylinder SGC125X20S
Delivering 6136 N of push force at 0.5 MPa, this double-acting tie-rod cylinder handles heavy short-stroke clamping and ejecting. Four steel tie rods clamp the aluminum barrel to the covers for high rigidity, while the two-way piston seal maintains an internal oil reservoir for long service life.
Because this SKU includes the -S magnet, you can mount CMSG, DMSG, or EMSG reed and electronic switches directly for position sensing. The Ø125 mm bore uses a G1/2 air port and an M27x2.0 rod thread. It is dimensionally interchangeable per the ISO 15552 mounting interface, dropping easily into existing large-bore fixtures.
Airtac SGC Standard Cylinder SGC125X20S Technical Specifications
| Model | Airtac SGC Standard Cylinder SGC125X20S |
|---|---|
| Series | SGC ISO 15552 tie-rod cylinder |
| Bore size | Ø125 mm |
| Stroke | 20 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 SGC125X20S
| SGC | ISO 15552 tie-rod cylinder (double-acting type). |
|---|---|
| 125 | Bore size in mm (125 / 160 / 200 / 250). |
| ×20 | 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 SGC125X20S Is Used
Heavy-Duty Stamping Clamp
Uses the full 6136 N push at 0.5 MPa to hold thick steel plates firmly in place during a hydraulic stamping press cycle.
Injection Mold Ejector
Provides a rapid 20 mm kick to eject dense plastic parts from an injection molding tool using the 8590 N available at 0.7 MPa.
Pneumatic Rivet Squeezer
Generates concentrated force over a very short travel distance to set large structural rivets without deflection.
Is the Airtac SGC Standard Cylinder SGC125X20S the Right Cylinder?
For a 20 mm stroke, this model provides compact ejection; if you need less force, there is no smaller bore in the SGC series, so you would have to look outside the family. Stepping up to the SGC160X20S raises the 0.5 MPa push force to 10053 N for heavier duties. Since this is a short 20 mm stroke, side-load stress on the rod is minimal compared to longer travel lengths.
Note that a plain cylinder drifts when air is lost or the valve is centered, as the adjustable air cushion only decelerates the piston near the end of travel. To hold a vertical load securely, 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 SGC125X20S 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 Ø125 mm bore model uses a G1/2 air port.
Yes, the -S suffix means this cylinder has a built-in piston magnet for CMSG, DMSG, and EMSG switches. Additionally, its tie-rod construction is dimensionally interchangeable per the ISO 15552 mounting interface, allowing it to drop into standard large-bore fixtures.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Made to Order
Large-bore cylinders built to order — confirm lead time.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SGC Cylinders
Request a Quote for Airtac SGC Standard Cylinder SGC125X20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.