Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X350-20S
The AirTAC Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X350-20S is a genuine double acting, adjustable stroke ISO 15552 (orig. ISO 6431) tie-rod air cylinder with a Ø125mm bore and 350mm 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
- Stroke350 mm
- Port sizeG1/2
- Acting typeDouble acting, adjustable stroke
- Rod threadM27×2.0
- CushionAdjustable, 40 mm
About the Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X350-20S
Delivering 6136 N of push force at 0.5 MPa, this large-bore ISO 15552 tie-rod cylinder integrates a magnetic piston for position sensing. Four steel tie rods clamp the aluminium barrel to the covers, providing structural rigidity while maintaining dimensional interchangeability per the ISO 15552 mounting interface for common large-bore fixtures. The G1/2 port supplies air to the 32 mm rod, driving the 125 mm piston at 30-500 mm/s.
The external adjuster allows you to shorten the extend stroke on-site by up to 20 mm, giving a usable forward range of 330 to 350 mm without changing the cylinder itself. This on-site end-position tuning is ideal for sharing spares across stroke variants. The default TPU seals and 40 mm adjustable air cushions handle dynamic deceleration, yielding a safe working load of about 3682 N, which translates to lifting roughly 313 kg vertically with a 2:1 margin.
Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X350-20S Technical Specifications
| Model | Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X350-20S |
|---|---|
| Series | SGC ISO 15552 tie-rod cylinder |
| Bore size | Ø125 mm |
| Stroke | 350 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 SGCJ125X350-20S
| SGCJ | ISO 15552 tie-rod cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (125 / 160 / 200 / 250). |
| ×350 | 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 SGCJ125X350-20S Is Used
Press Fit Tuning
Fine-tune the 350 mm extend stroke by up to 20 mm on-site to dial in exact pressing depths for bearing insertion without swapping the cylinder.
Divertor Adjustment
Adjust the extend end position to accommodate different package sizes on a sorting line, using the G1/2 port and 6136 N thrust to push heavy cartons.
Pallet Stop Calibration
Set the precise stop distance for varying pallet widths, relying on the 40 mm adjustable air cushions to decelerate the 125 mm piston smoothly.
Is the Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X350-20S the Right Cylinder?
When sizing this unit against its neighbours, the 125 mm bore sits at the lower edge of the SGCJ family, offering 6136 N push at 0.5 MPa compared to the 10053 N available from the 160 mm bore. Stepping up is necessary if your vertical loads exceed the safe 313 kg working threshold. The adjustable stroke feature means you can stock one 350 mm cylinder and fine-tune the end position across multiple fixtures. Mounting options include FA, LB, TC, FTC, TCM1, and TCM2 brackets. The built-in -S magnet supports CMSG, DMSG, and EMSG sensors. Because the 350 mm stroke exceeds 500 mm, always use an external guide 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 SGCJ125X350-20S 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.
An external stop screw lets you shorten the extend stroke on-site by up to 20 mm, giving a usable range of 330 to 350 mm. The nominal 350 mm stroke is the maximum, and the retract end remains fixed.
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