Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X250-20S
The AirTAC Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X250-20S is a genuine double acting, adjustable stroke ISO 15552 (orig. ISO 6431) tie-rod air cylinder with a Ø125mm bore and 250mm 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
- Stroke250 mm
- Port sizeG1/2
- Acting typeDouble acting, adjustable stroke
- Rod threadM27×2.0
- CushionAdjustable, 40 mm
About the Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X250-20S
Delivering 6136 N of push force at 0.5 MPa, this large-bore ISO 15552 tie-rod cylinder integrates a built-in magnet for position sensing. The four steel tie rods clamp the aluminium barrel securely to the covers, while the G1/2 port matches the 125 mm bore standard. A genuine ISO 15552 mounting interface ensures dimensional interchangeability across standard fixtures.
The external adjuster lets you shorten the extend stroke on-site by up to 20 mm, meaning the usable extend range is 230 to 250 mm from the fixed retract end. This on-site tuning avoids physically swapping cylinders when fine-tuning end positions. The default TPU seals provide long service life, though a Viton H option extends the operating temperature range up to 150 C. With a safe working load of roughly 3682 N, it handles about 313 kg lifted vertically with a 2:1 margin.
Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X250-20S Technical Specifications
| Model | Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X250-20S |
|---|---|
| Series | SGC ISO 15552 tie-rod cylinder |
| Bore size | Ø125 mm |
| Stroke | 250 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 SGCJ125X250-20S
| SGCJ | ISO 15552 tie-rod cylinder (adjustable-stroke type). |
|---|---|
| 125 | Bore size in mm (125 / 160 / 200 / 250). |
| ×250 | 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 SGCJ125X250-20S Is Used
Press Fit Tuning
Fine-tune the pressing depth of bearings on-site using the 20 mm extend adjuster window without changing the cylinder setup.
Divertor Stop Adjustment
Accurately set the extend stop position for product diverters on packaging lines to handle varying package sizes.
Pallet Positioning
Use the integrated magnet and adjustable end-stop to precisely locate pallets before stretch wrapping operations.
Is the Airtac SGCJ125~160 Adjustable Cylinder SGCJ125X250-20S 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 family, but stepping up to the 160 mm bore yields 10053 N of push force at 0.5 MPa if your application demands more power. The adjustable stroke feature is highly beneficial for sharing a single spare across multiple stroke variants or finalizing end positions during machine commissioning. Mounting options include FA, LB, TC, FTC, TCM1, and TCM2 brackets. The included -S magnet supports CMSG, DMSG, and EMSG sensors. For this 250 mm stroke, ensure external guide rails are used 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 SGCJ125X250-20S FAQ
This 125 mm bore cylinder features a G1/2 port and a 32 mm rod. It delivers 6136 N push and 5734 N pull at 0.5 MPa, 8590 N push and 8028 N pull at 0.7 MPa, with a theoretical maximum force of 1251 kgf at 1.0 MPa.
The external stop screw lets you shorten the extend stroke on-site by up to 20 mm, providing a usable extend range of 230 to 250 mm from the fixed retract end. The nominal 250 mm stroke is the maximum, and the stop only sets the end position; it is not a load lock.
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1-Year Warranty
Covers non-human-caused product damage.
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Large-bore cylinders built to order — confirm lead time.
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