Airtac SAIJ125 Adjustable Cylinder SAIJ125X275-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X275-10S 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 SAIJ125X275-10S
The AirTAC SAIJ125X275-10-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 6136 N of push force and 5734 N of pull force at 0.5 MPa, providing robust actuation for heavy industrial loads. The integrated -S magnet enables position detection using AirTAC CMSE reed or DMSE electronic solid-state sensors housed in the dual-side extruded barrel grooves.
This specific SKU features a 275 mm nominal stroke paired with a 10 mm adjustment range, yielding a usable travel window of 265 to 275 mm. The rear stopper screw allows technicians to dial in the exact retract end position during commissioning without adding external stops. It operates at speeds of 30-500 mm/s and uses a G1/2 port with PT tapered threading.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X275-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X275-10S |
|---|---|
| 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 SAIJ125X275-10S
| 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 SAIJ125X275-10S Is Used
Machine Setup Fine-Tuning
Dial in the exact retract position within the 265-275 mm window during initial commissioning to achieve precise tooling alignment without machining external spacers.
Product Size Changeover
Quickly adjust the end stop by up to 10 mm on packaging lines to accommodate slightly different carton or product lengths on the fly.
Heavy Material Handling
Leverage the 6136 N push force at 0.5 MPa to move heavy pallets or fixtures, using the integrated -S magnet to confirm stroke completion with DMSE sensors.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X275-10S the Right Cylinder?
Choose this 125 mm bore when a 100 mm cylinder (providing 3927 N push at 0.5 MPa) lacks the necessary thrust, but you want to avoid the larger 160 mm footprint. The 10 mm adjustable window is ideal for fine-tuning end positions during machine setup or product changeovers, a distinct advantage over a fixed-stroke SAI cylinder. Because the nominal stroke is 275 mm, ensure adequate external guiding to prevent excessive side-loading on the 32 mm carbon steel rod. The adjuster acts purely as a travel stop and does not hold the load without live air; for fail-safe load holding, consider an AirTAC SAIL or BSAI cylinder. It is dimensionally interchangeable per ISO 15552 and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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 SAIJ125X275-10S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 1251 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the 275 mm nominal stroke down to 265 mm. It only sets the end position and 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 SAIJ125X275-10S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.