Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X300-40S
The AirTAC Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X300-40S 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 SGCJ125X300-40S
Delivering 6136 N of push force at 0.5 MPa, this large-bore ISO 15552 tie-rod cylinder uses four steel rods to clamp its aluminium barrel for high structural rigidity. The built-in piston magnet supports CMSG, DMSG and EMSG sensors for precise position detection, while the G1/2 port handles the 30-500 mm/s speed range.
The external adjuster allows you to shorten the extend stroke on-site by up to 40 mm, giving a usable range of 260-300 mm without changing the cylinder itself. It yields a safe working load of roughly 3682 N, or about 313 kg lifted vertically with a 2:1 margin. A two-way piston seal pairs with adjustable air cushions to ensure reliable operation.
Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X300-40S Technical Specifications
| Model | Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X300-40S |
|---|---|
| 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 SGCJ125X300-40S
| 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 SGCJ125X300-40S Is Used
Press Fit Tuning
Fine-tune the 260-300 mm extend stroke on-site to set precise pressing depths for bearing insertion without swapping the cylinder.
Divertor Gate Adjustment
Adjust the extend end-position by up to 40 mm to alter the divert angle on a sorting line for different package sizes.
Pallet Stopper Logic
Use the CMSG or DMSG sensors to confirm the stopper position, tweaking the stroke window to match varying pallet heights.
Is the Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X300-40S the Right Cylinder?
When sizing this 125 mm bore unit, stepping down is not an option as it is the smallest in the SGCJ range, but stepping up to the 160 mm bore increases the 0.5 MPa push force to 10053 N. The -40 mm adjust window is ideal for sharing one spare cylinder across multiple stroke variants or fine-tuning the end position on-site. Mounting options include FA, LB, TC, FTC, TCM1 and TCM2 brackets. The -S suffix confirms the magnet is present for switches. For any stroke at or above 500 mm, always use a guide rail to prevent side-load damage.
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 SGCJ125X300-40S 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 is 1251 kgf at 1.0 MPa. The air port is G1/2.
The external adjuster shortens the extend stroke by up to 40 mm on-site, giving a usable extend range of 260-300 mm. The nominal 300 mm stroke is the maximum and the retract end is fixed. This mechanism sets the end position and is not a load lock.
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