Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X125-40
The AirTAC Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X125-40 is a genuine double acting, adjustable stroke ISO 15552 (orig. ISO 6431) tie-rod air cylinder with a Ø125mm bore and 125mm 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
- Stroke125 mm
- Port sizeG1/2
- Acting typeDouble acting, adjustable stroke
- Rod threadM27×2.0
- CushionAdjustable, 40 mm
About the Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X125-40
Generating 6136 N of push force at 0.5 MPa, this large-bore ISO 15552 tie-rod cylinder features an external adjuster that shortens the extend stroke on-site by up to 40 mm. The nominal 125 mm stroke remains the maximum travel, yielding a usable extend range of 85 to 125 mm, while the retract end stays fixed. Four steel tie rods clamp the aluminum barrel to the covers for structural rigidity, and the G1/2 port feeds the double-acting single-rod piston.
This configuration handles a safe working load of about 3682 N, which translates to lifting roughly 313 kg vertically with a 2:1 safety margin. The two-way piston seal runs on filtered 40 um air, and standard TPU seals cover -20 to +70 C, though a Viton H option extends heat resistance up to 150 C. Note this specific SKU lacks a magnet, so it cannot accept CMSG, DMSG, or EMSG sensors without switching to an -S variant.
Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X125-40 Technical Specifications
| Model | Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X125-40 |
|---|---|
| Series | SGC ISO 15552 tie-rod cylinder |
| Bore size | Ø125 mm |
| Stroke | 125 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 SGCJ125X125-40
| SGCJ | ISO 15552 tie-rod cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (125 / 160 / 200 / 250). |
| ×125 | 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 SGCJ125X125-40 Is Used
Press Fit Tuning
Dial in the exact 95 mm insertion depth for bearing presses on-site using the 40 mm adjuster, avoiding mechanical shim changes while delivering 8590 N at 0.7 MPa.
Divert Gate Stroke
Set a precise 110 mm extend stroke to actuate a sorting gate, using the G1/2 port and ISO 15552 mounting interface to drop into existing conveyor fixtures.
Pallet Stopper Block
Adjust the extend stop down to 85 mm to catch varying pallet sizes, leveraging the 5734 N pull force at 0.5 MPa to retract the block clear of the flow.
Is the Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X125-40 the Right Cylinder?
When sizing this unit against its neighbors, the 125 mm bore provides 6136 N push at 0.5 MPa, sitting neatly below the 160 mm bore that delivers 10053 N, and above smaller ISO 15552 classes. The 40 mm adjustable window is highly useful when you need to fine-tune the end position across multiple stations without physically swapping cylinders, allowing shared spares across stroke variants. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets. Because this is a non-magnetized model, position sensing is impossible; if you require switches, select the -S version. For any stroke at or above 500 mm, always use a guide rail to prevent side-load damage, and remember the adjustable stop only sets position—it is not a 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 SGCJ125~160 Adjustable Cylinder SGCJ125X125-40 FAQ
This 125 mm bore cylinder uses a G1/2 port and delivers 6136 N push and 5734 N pull at 0.5 MPa. At 0.7 MPa it provides 8590 N push and 8028 N pull. The theoretical maximum force is 1251 kgf at 1.0 MPa.
The external adjuster allows you to shorten the extend stroke on-site by up to 40 mm. With a 125 mm nominal stroke, the usable extend range is 85 to 125 mm, while the retract end remains fixed. This mechanism only sets the end position and does not lock the load.
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