Airtac SAIJ125 Adjustable Cylinder SAIJ125AX475-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX475-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 475mm 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
- Stroke475 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX475-100S
The AirTAC SAIJ125X475-100-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 6136N of push force at 0.5 MPa and provides a usable travel window of 375 to 475 mm, allowing you to dial back the 475 mm nominal stroke by up to 100 mm during commissioning without adding external stops.
This unit includes a SUS420J2 stainless steel rod (material code A) for improved corrosion resistance and is equipped with a magnet for CMSE reed and DMSE electronic sensors. It uses PT tapered port threads and offers adjustable air cushions at both ends to manage deceleration across its 30-500 mm/s speed range.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX475-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX475-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 475 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 SAIJ125AX475-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×475 | 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 SAIJ125AX475-100S Is Used
Variable End-Stop Positioning
Dial in the exact retract distance from 375 to 475 mm during machine setup to accommodate different material thicknesses without mechanical rework.
Product Changeover Systems
Rapidly adjust the stroke end-position on packaging lines when switching between varying package sizes, minimizing downtime between production runs.
Heavy-Duty Clamping
Utilize the 6136N push force to secure large workpieces while fine-tuning the clamping depth to avoid deforming delicate components.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX475-100S the Right Cylinder?
Choose this 125 mm bore when a 100 mm bore provides insufficient thrust (offering 3927N at 0.5 MPa) or when a 160 mm bore is excessive (delivering 10053N at 0.5 MPa). The 100 mm adjustment range is highly valuable for product changeovers on automated lines, letting operators fine-tune the retract end-position quickly instead of swapping out a fixed-stroke SAI cylinder.
Because the 475 mm stroke is substantial, an external guide rail is recommended to prevent side-loading damage to the 32 mm diameter piston rod. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding, select a SAIL or BSAI cylinder. To match this ISO 15552 footprint, specify the 125 mm bore, 475 mm stroke, 100 mm adjustment, PT port, Basic/FA/LB/TC/FTC/TCM1/TCM2 mountings, and the -S 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 SAIJ125AX475-100S FAQ
The rear adjuster screw lets you shorten the effective travel by up to 100 mm, creating a usable stroke window of 375 to 475 mm. This allows precise end-position tuning at commissioning without replacing the cylinder.
At a 0.5 MPa operating pressure, it provides 6136N of push force and 5734N of pull force. At the maximum 1.0 MPa pressure, the push force reaches 1251 kgf.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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