Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X350-75S
The AirTAC Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X350-75S 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 SGCJ125X350-75S
Delivering 6136 N of push force at 0.5 MPa, this large-bore ISO 15552 tie-rod cylinder features a 125 mm bore and an external adjuster that shortens the extend stroke on-site by up to 75 mm. The nominal 350 mm stroke acts as the maximum, yielding a usable 275-350 mm extension window for fine-tuning the end position without swapping hardware. A G1/2 port feeds the chamber, and four steel tie rods clamp the aluminum barrel to the covers for high structural rigidity. The built-in -S magnet supports CMSG/DMSG/EMSG switches for exact position sensing.
This double-acting single-rod unit handles a safe working load of roughly 3682 N, which equates to lifting about 313 kg vertically with a 2:1 safety margin. It incorporates a two-way piston seal for leak-free bidirectional motion, while the standard TPU elastomer operates from -20 to +70 C. For high-heat environments up to 150 C, a Viton H seal option is available. The 40 mm adjustable air cushions at both ends absorb kinetic energy smoothly, and the unit drops into existing fixtures dimensionally interchangeable per the ISO 15552 mounting interface.
Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X350-75S Technical Specifications
| Model | Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X350-75S |
|---|---|
| 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 SGCJ125X350-75S
| 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 SGCJ125X350-75S Is Used
Press Fit Tuning
Dial in the exact 275-350 mm extend reach on-site to seat bearings without over-traveling, using the 75 mm adjuster to match varying workpiece heights.
Divertor Arm Positioning
Fine-tune the pusher endpoint on a sorting line by shortening the extend stroke, ensuring packages transfer smoothly without crashing into guide rails.
Pallet Stop Mechanism
Adjust the stopping depth on the fly to accommodate different pallet sizes, relying on the 6136 N push force to halt heavy loads securely.
Is the Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X350-75S the Right Cylinder?
When sizing this 125 mm bore actuator, stepping down is not an option as it is the smallest in the SGCJ family, but moving up to the 160 mm bore increases the 0.5 MPa push force significantly to 10053 N. The 75 mm adjustable window is highly advantageous when you need to synchronize end positions across multiple stroke variants or dial in a precise reach on-site without machining new hard stops. You can mount this cylinder using FA, LB, TC, FTC, TCM1, or TCM2 hardware. Because the -S magnet is present, you can directly install CMSG, DMSG, or EMSG sensors for electronic or reed feedback. At a 350 mm stroke, the side-load leverage is moderate, so ensure adequate guide rails to prevent rod bending. Remember that standard air cushions only decelerate the piston near the end of travel; they do not hold a load. To prevent drift on air loss, install an external rod lock or a pilot-operated check valve.
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 SGCJ125X350-75S FAQ
At 0.5 MPa it provides 6136 N push and 5734 N pull. At 0.7 MPa it yields 8590 N push and 8028 N pull. The theoretical maximum force is 1251 kgf at 1.0 MPa. The air port size is G1/2, and it features a 32 mm rod with an M27x2.0 thread.
The external stop screw lets you shorten the extend stroke by up to 75 mm directly on-site. The nominal 350 mm stroke is the maximum, giving a usable extension range of 275-350 mm, while the retract end remains fixed. This mechanism sets the end position and does not lock the load.
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