
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX90-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 90mm 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.
The AirTAC SAIJ125X90-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 6136N push force at 0.5 MPa. By integrating a 10mm adjustment mechanism, it transforms the 90mm nominal stroke into a highly versatile 80-90mm usable travel window. This allows operators to dial in exact end positions during commissioning without adding external stops or swapping the cylinder.
Built for durability and precise sensing, this unit features a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated magnet (-S) seamlessly interfaces with AirTAC CMSE reed and DMSE electronic solid-state switches. Fluid supply is controlled via PT tapered G1/2 ports.
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX90-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 90 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.
| 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.
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×90 | 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.
Fine-tune the 80-90mm travel window during product size transitions to set new end positions instantly without changing the cylinder.
Dial in the exact retract stop during commissioning to compensate for mechanical tolerances in the fixture.
Leverage the 6136N thrust at 0.5 MPa to securely hold large workpieces, using the 10mm adjuster to set the exact clamping depth.
Choose this 125mm bore when an 80mm bore (providing 2513N at 0.5 MPa) lacks sufficient power, but you want to avoid stepping up to a 160mm unit. The 10mm rear adjuster is perfect for variable product-size changeovers, acting as a fine-tune stopper rather than a lock. Because the SAIJ rear screw and air cushions only set travel ends, they cannot hold a load without live air; for true fail-safe load holding, select the SAIL or BSAI series instead. This model is dimensionally interchangeable per ISO 15552.
Quick checklist
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. It can reach up to 11045N push force at 0.9 MPa.
The rear adjuster screw allows you to shorten the 90mm nominal stroke by up to 10mm, creating an 80-90mm usable travel window. It functions as an external mechanical stop for end-position tuning, not a lock.
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