Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X300-75
The AirTAC Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X300-75 is a genuine double acting, adjustable stroke ISO 15552 (orig. ISO 6431) tie-rod air cylinder with a Ø125mm bore and 300mm 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
- Stroke300 mm
- Port sizeG1/2
- Acting typeDouble acting, adjustable stroke
- Rod threadM27×2.0
- CushionAdjustable, 40 mm
About the Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X300-75
Delivering 6136 N of push force at 0.5 MPa, this large-bore ISO 15552 tie-rod cylinder features a 125 mm bore and a 300 mm stroke. Four steel tie rods clamp the aluminum barrel to the covers for high structural rigidity. It connects via a G1/2 port and includes a 40 mm adjustable air cushion at each end. With a safe working load around 3682 N, it can vertically lift roughly 313 kg with a 2:1 margin.
The -75 code defines an external adjuster window that lets you shorten the extend stroke on-site by up to 75 mm, yielding a usable extend range of 225-300 mm while the retract end remains fixed. You can fine-tune the end position without physically changing the cylinder. Dimensionally interchangeable per the ISO 15552 mounting interface, it drops directly into existing large-bore fixtures. The standard TPU seal handles -20 to +70 C, while a Viton H option extends this to 0-150 C.
Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X300-75 Technical Specifications
| Model | Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X300-75 |
|---|---|
| Series | SGC ISO 15552 tie-rod cylinder |
| Bore size | Ø125 mm |
| Stroke | 300 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 SGCJ125X300-75
| SGCJ | ISO 15552 tie-rod cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (125 / 160 / 200 / 250). |
| ×300 | 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 SGCJ125X300-75 Is Used
Press Fit Tuning
Micro-adjust the 75 mm extend window on-site to set precise pressing depths for bearing insertion without swapping cylinders.
Divertor Arm Stroke
Shorten the extend stroke from 300 mm down to 225 mm to fine-tune a conveyor divertor arm reach for varying package widths.
Pallet Stop Position
Dial in the exact end-stop location for pallets on a heavy-duty accumulation line using the external adjuster screw.
Is the Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X300-75 the Right Cylinder?
When sizing this 125 mm bore unit, stepping down is not an option as it sits at the low edge of the SGCJ range. Stepping up to the 160 mm bore increases push force at 0.5 MPa to 10053 N. The 75 mm adjustable window is ideal for sharing a single spare across multiple stroke variants or fine-tuning end positions on-site. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because this is a non-magnetized SKU, it cannot accept a position sensor; you must specify the -S variant to use CMSG, DMSG, or EMSG switches. Since the 300 mm stroke is relatively short, side-load risks are minimal, but always guide the rod end for any application exceeding 500 mm.
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 SGCJ125X300-75 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. The theoretical maximum force is 1251 kgf at 1.0 MPa.
The nominal 300 mm stroke is the maximum. An external stop screw lets you shorten the extend stroke on-site by up to 75 mm, giving a usable extend range of 225-300 mm. The retract end is fixed. This mechanism only sets the end position; it does not lock the load.
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