Airtac SAIJ125 Adjustable Cylinder SAIJ125AX275-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX275-100S 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 SAIJ125AX275-100S
The AirTAC SAIJ125X275-100-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 6136N of pull force at 0.5 MPa and features a PT tapered port with a 32mm SUS420J2 stainless steel rod. The integrated magnet supports CMSE reed and DMSE solid-state sensors for precise position detection.
With a 275mm nominal stroke and a 100mm adjustment range, this SKU provides a usable travel window of 175-275mm. This wide tuning band allows you to dial back the retract end-position during commissioning or product changeovers without adding external stops. The rear adjuster acts purely as a travel stop for end-position deceleration, not a lock, meaning it will not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX275-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX275-100S |
|---|---|
| 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 SAIJ125AX275-100S
| 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 SAIJ125AX275-100S Is Used
Changeover Calibration
Dial in the exact 175-275mm retract position during machine setup for new product runs without swapping hardware.
Variable End-Stops
Set precise end-of-stroke limits for multi-format packaging lines that require frequent physical position adjustments.
Heavy Forming Operations
Leverage the 6136N pull force for pressing and clamping tasks where the final position needs fine-tuning.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX275-100S the Right Cylinder?
Select this 125mm bore model when your application requires 6136N pull force at 0.5 MPa and significant stroke flexibility. The 100mm adjustment window is ideal for machines processing varying product sizes, letting operators fine-tune the retract distance on the fly. If your force requirements are lower, stepping down to an 80mm bore yields 2268N pull, while moving up to a 160mm bore provides 9425N. For load-holding without continuous air pressure, consider the SAIL or BSAI series instead.
This cylinder is dimensionally interchangeable per ISO 15552 mounting interfaces. It uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets, omitting FB, CA, CB, and CR. Because the 275mm stroke is relatively long, the 32mm rod helps manage side loads, but an external guide is still recommended for unsupported heavy tooling to prevent premature wear.
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 SAIJ125AX275-100S FAQ
At 0.5 MPa, it provides 6136N of push force and 5734N of pull force. At the maximum 1.0 MPa operating pressure, it delivers up to 1251 kgf.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from 275mm down to 175mm. It only sets the end position and does not lock the load without live air.
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 SAIJ125AX275-100S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.