Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-30S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 195mm 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
- Stroke195 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-30S
The AirTAC SAIJ125X195-30-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that allows you to trim the effective travel back by up to 30 mm. This yields a highly flexible 165-195 mm usable window, letting you dial in the exact end position during commissioning without adding bulky external stops. Equipped with a SUS420J2 stainless steel rod (material code A) and a -S magnet, it integrates seamlessly with AirTAC CMSE reed and DMSE electronic sensors housed within the dual-side sensor grooves of the extruded aluminum barrel.
Delivering 6136 N of pull force at 0.5 MPa (and up to 11045 N push at 0.9 MPa), this 125 mm bore unit is built for heavy-duty positioning. It features PT tapered port threads and operates at a controlled 30-500 mm/s speed range. The rear adjuster acts purely as a mechanical stop to set the retraction end-point; it does not hold the load dynamically, so you must maintain live air pressure or utilize a SAIL or BSAI locking cylinder for secure load-holding.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-30S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 195 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 SAIJ125AX195-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×195 | 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 SAIJ125AX195-30S Is Used
Product Changeover
Quickly fine-tune the 165-195 mm retraction end-stop during production line format changes without physically replacing the cylinder.
Machine Setup
Dial in the exact end position during initial commissioning to achieve precise mechanical alignment without adding external shims.
Variable End Stops
Adjust the travel window on the fly to accommodate multi-format tooling or varying package sizes on a single workstation.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX195-30S the Right Cylinder?
Choose this adjustable SAIJ variant over a fixed-stroke SAI when your machine setup requires frequent product-size changeovers or precise end-position tuning without swapping hardware. If your application demands less thrust, stepping down to a 100 mm bore yields 3681 N of pull force at 0.5 MPa, whereas moving up to a 160 mm bore provides 9425 N. Because this is a 195 mm stroke, the 32 mm diameter rod and M27x2 thread provide robust rigidity, though any long unsupported travel exceeding 300 mm would necessitate an external guide to prevent side-loading damage.
To match this ISO 15552 dimensionally interchangeable cylinder, specify a 125 mm bore, 195 mm nominal stroke, 30 mm adjustment range, PT port threads, SUS420J2 rod material, and the -S magnet option. It supports a dedicated mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2 configurations, omitting FB, CA, CB, and CR 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 SAIJ125AX195-30S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of pull force and 8590 N of push force. At 0.9 MPa, the push force increases to 11045 N.
The rear adjuster acts as a mechanical stop that shortens the 195 mm nominal stroke by up to 30 mm, creating a 165-195 mm usable travel window. It sets the end position but does not lock the load without live air pressure.
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