Airtac SAIJ125 Adjustable Cylinder SAIJ125AX275-100
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX275-100 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 SAIJ125AX275-100
The AirTAC SAIJ125X275-100 is a double-acting ISO 15552 profile cylinder engineered for precise retract-end tuning. It provides a usable travel window of 175 to 275 mm, allowing you to dial back the nominal stroke by up to 100 mm during commissioning without adding external stops. Operating at 0.5 MPa, it delivers 6136 N of pull force, powered through a PT G1/2 port.
This unit features a 32 mm SUS420J2 stainless steel rod (material code A) for corrosion resistance and a 40 mm cushion stroke to manage heavy kinetic energy. The extruded aluminum barrel includes sensor grooves on both sides for mounting CMSE reed or DMSE electronic switches. It supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX275-100 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX275-100 |
|---|---|
| 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 SAIJ125AX275-100
| 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 SAIJ125AX275-100 Is Used
Product Changeover Tuning
Leverage the 175-275 mm travel window to quickly adapt machinery for varying product lengths without physically swapping cylinders or adding external mechanical stops.
Variable End-Stop Diverter
Fine-tune the retract position on a sorting line to deflect packages of different sizes accurately using the 100 mm rear adjustment screw.
Heavy Load Positioning
Utilize the 6136 N pull force at 0.5 MPa to move heavy pallets, dialing in the exact end-of-stroke location during initial machine setup.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX275-100 the Right Cylinder?
Choose this 125 mm bore when an application requires 6136 N of pull force at 0.5 MPa, or 8590 N at 0.7 MPa. If your load demands less force, stepping down to an 80 mm bore yields 2268 N of pull at 0.5 MPa. The 100 mm adjustment range is selected when machinery requires significant product-size changeovers, replacing the need for a fixed-stroke SAI cylinder.
For any stroke of 275 mm or more, an external guide is recommended to handle side loads, as the 32 mm rod thread alone cannot support unsupported radial forces. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding, consider an SAIL or BSAI cylinder. To match this ISO 15552 footprint exactly, specify the 125 mm bore, 275 mm stroke, PT G1/2 port, and no magnet.
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 SAIJ125AX275-100 FAQ
It features a rear stopper screw that allows you to shorten the effective stroke by up to 100 mm, providing a usable travel window of 175 to 275 mm. This lets you fine-tune the end position at commissioning without replacing the cylinder.
At an operating pressure of 0.5 MPa, the SAIJ125X275-100 provides 6136 N of pull force and 6136 N of push force. At 0.7 MPa, the push force increases to 8590 N.
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 SAIJ125AX275-100
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.