Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X125-75S
The AirTAC Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X125-75S 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 SGCJ125X125-75S
Delivering 6136 N of push force at 0.5 MPa, this large-bore ISO 15552 tie-rod cylinder integrates a piston magnet for position sensing. Four steel tie rods clamp the aluminum barrel to the covers, ensuring structural rigidity, while the G1/2 port matches the 125 mm bore standard. A two-way piston seal extends service life across demanding cycles.
The external adjuster lets you shorten the extend stroke on-site by up to 75 mm, meaning the usable extend range is 50-125 mm without changing the cylinder itself. This on-site end-position tuning is ideal for sharing spares across stroke variants. It handles a safe working load of roughly 3682 N, lifting about 313 kg vertically with a 2:1 margin. The default TPU seals operate from -20 to +70 C, with a Viton H option available for 0-150 C environments.
Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X125-75S Technical Specifications
| Model | Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X125-75S |
|---|---|
| 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 SGCJ125X125-75S
| 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 SGCJ125X125-75S Is Used
Press Fit Tuning
Fine-tune the pressing depth of bearings on-site using the 75 mm adjuster window to perfectly seat components without swapping cylinders.
Divertor Stroke Adjust
Adjust the extend stroke from 50 to 125 mm to change the diverting distance on a conveyor belt as product sizes vary on the line.
Pallet Stop Position
Set the exact stopping point for varying pallet widths on a roller conveyor by dialing in the extend end position with the external screw.
Is the Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X125-75S the Right Cylinder?
When sizing this 125 mm bore unit, stepping down is not an option as it is the smallest in the SGCJ family. Stepping up to the 160 mm bore increases the 0.5 MPa push force to 10053 N. The adjustable stroke feature is highly beneficial when you need to fine-tune the extend end position on-site or want a single spare to cover several stroke variants. Mounting options include FA, LB, TC, FTC, TCM1, and TCM2. The included -S magnet supports CMSG, DMSG, and EMSG sensors. Because the standard stroke is 125 mm, you do not need external guide rails for side loads, but always verify the load center of gravity. Note that a plain cylinder drifts on air loss; use an external rod lock or pilot-operated check valve to hold a load securely.
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 SGCJ125X125-75S FAQ
At 0.5 MPa this 125 mm bore cylinder provides 6136 N push and 5734 N pull force. At 0.7 MPa it delivers 8590 N push and 8028 N pull. The theoretical maximum force is 1251 kgf at 1.0 MPa. It uses a G1/2 air port and features a 32 mm piston rod with an M27x2.0 thread.
The nominal 125 mm stroke is the maximum extend length. The external adjuster lets you shorten the extend stroke on-site by up to 75 mm, giving a usable extend range of 50-125 mm. The retract end is fixed. This mechanism sets the end position but does not lock the load; you still need live air or an external check valve to hold position.
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