Airtac SAIJ125 Adjustable Cylinder SAIJ125AX275-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX275-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 275mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ125 mm
- Stroke275 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX275-10S
The AirTAC SAIJ125X275-10-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear mechanical adjuster. This specific SKU provides a 275 mm nominal stroke that can be dialed back by up to 10 mm, yielding a 265-275 mm usable travel window for precise end-position tuning during commissioning. It delivers substantial thrust, generating 6136 N of push force and 5734 N of pull force at 0.5 MPa.
Built with a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance, this model includes a magnet for position sensing. It integrates seamlessly with AirTAC CMSE reed and DMSE solid-state switches via the dual-side sensor grooves on its extruded aluminum barrel. The robust 32 mm rod and M27x2 thread handle high side loads well, while the PT tapered port threads ensure a tight, reliable pneumatic connection.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX275-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX275-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 275 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2 |
| 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 stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
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 SAIJ125 Adjustable Cylinder SAIJ125AX275-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×275 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX275-10S Is Used
Machine Setup & Changeover
Fine-tune the 265-275 mm retracted end-stop during product line changeovers to accommodate varying material lengths without replacing the cylinder.
Variable End-Stop Forming
Dial in the exact retraction depth for a large press or forming operation, using the 125 mm bore's 6136 N push force to shape heavy components.
Heavy Load Positioning
Position bulky pallets on a conveyor by adjusting the stroke end-point to align with different pallet sizes, relying on the 32 mm rod for stability.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX275-10S the Right Cylinder?
Choose this 125 mm bore when an 80 mm cylinder (offering 2513 N push at 0.5 MPa) is insufficient, but a 160 mm bore (10053 N at 0.5 MPa) would be excessive overkill. The 10 mm adjustable range is ideal for product changeovers where you need to trim the retracted end-stop by a few millimeters without swapping the cylinder or adding external stops. For strokes of 275 mm or longer, an external guide is recommended to prevent rod binding under heavy loads.
This cylinder is dimensionally interchangeable per ISO 15552. To match this exact configuration, specify a 125 mm bore, 275 mm stroke, 10 mm adjustment, PT port threads, SUS420J2 rod material, and the -S magnet option. Note that the rear adjuster and air cushions act as travel stops and deceleration devices; they do not hold the load without live air. For fail-safe load holding, consider the SAIL or BSAI series instead. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
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 on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX275-10S FAQ
At 0.5 MPa, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At the maximum operating pressure of 1.0 MPa, it can deliver up to 1251 kgf of push force.
The rear adjusting screw acts as a mechanical stopper, allowing you to shorten the 275 mm nominal stroke by up to 10 mm, resulting in a 265-275 mm usable travel window. It sets the end position but does not lock the load without continuous air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ125 Adjustable Cylinder SAIJ125AX275-10S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.