Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X25-20S
The AirTAC Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X25-20S is a genuine double acting, adjustable stroke ISO 15552 (orig. ISO 6431) tie-rod air cylinder with a Ø125mm bore and 25mm 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
- Stroke25 mm
- Port sizeG1/2
- Acting typeDouble acting, adjustable stroke
- Rod threadM27×2.0
- CushionAdjustable, 40 mm
About the Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X25-20S
Delivering 6136 N of push force at 0.5 MPa, this large-bore ISO 15552 tie-rod cylinder integrates a built-in magnet for position sensing. The four steel tie rods clamp the aluminium barrel securely to the covers, while the G1/2 port manages the air supply. It handles a safe working load of roughly 3682 N, which translates to lifting about 313 kg vertically with a 2:1 margin.
The external adjuster allows you to shorten the extend stroke on-site by up to 20 mm, giving a usable extend range of 5 to 25 mm without changing the cylinder itself. You can fit CMSG, DMSG or EMSG sensors directly to the -S magnet body. For high-temperature environments up to 150 C, Viton H seals are available instead of the standard TPU.
Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X25-20S Technical Specifications
| Model | Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X25-20S |
|---|---|
| Series | SGC ISO 15552 tie-rod cylinder |
| Bore size | Ø125 mm |
| Stroke | 25 mm |
| Acting type | Double acting, adjustable stroke |
| 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 SGCJ125~160 Adjustable Cylinder SGCJ125X25-20S
| SGCJ | ISO 15552 tie-rod cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (125 / 160 / 200 / 250). |
| ×25 | 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 SGCJ125~160 Adjustable Cylinder SGCJ125X25-20S Is Used
Short-Stroke Clamping
Uses the 5 to 25 mm adjustable extend window to dial in exact clamping pressure on aluminium castings without swapping fixtures.
Press Fit Positioning
Relies on the 6136 N push force and the external stop screw to set precise bottoming depth for bearing insertion tasks.
Transfer Line Stops
Leverages the G1/2 port and ISO 15552 interface to drop into existing conveyor frames as an adjustable product arrestor.
Is the Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X25-20S the Right Cylinder?
This 125 mm bore sits at the lower edge of the SGCJ range, offering 6136 N push at 0.5 MPa, whereas the 160 mm bore provides 10053 N. The adjustable stroke is ideal when you need to fine-tune the end position across multiple shared spares. Mounting options include FA, LB, TC, FTC, TCM1 and TCM2 brackets. The -S suffix means a piston magnet is present for CMSG/DMSG/EMSG switches. Because the stroke is short, side-load stress is minimal, but always guide the load rigidly on longer strokes.
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 SGCJ125~160 Adjustable Cylinder SGCJ125X25-20S FAQ
This 125 mm bore cylinder has a G1/2 port and generates 6136 N push and 5734 N pull at 0.5 MPa, 8590 N push and 8028 N pull at 0.7 MPa, with a theoretical max of 1251 kgf at 1.0 MPa.
The nominal 25 mm stroke is the maximum extend length. The external adjuster lets you shorten the extend stroke on-site by up to 20 mm, yielding a usable range of 5 to 25 mm. The retract end is fixed, and the cushion only decelerates the piston; it does not hold the load without live air.
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