Airtac SAIJ50 Adjustable Cylinder SAIJ50AX135-10S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX135-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 135mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ50 mm
- Stroke135 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX135-10S
The AirTAC SAIJ50X135-10-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. With a 135mm nominal stroke and a 10mm adjustment range, it provides a usable travel window of 125-135mm for precise end-position tuning at commissioning. It delivers 982N of push thrust and 825N of pull thrust at 0.5MPa, making it well-suited for moderate-force positioning tasks.
This variant includes a standard magnet for CMSE or DMSE sensors and uses SUS420J2 stainless steel for the piston rod (option A) to resist corrosion. The extruded aluminum barrel incorporates sensor grooves on both sides for flexible switch mounting. The rear adjuster acts purely as a mechanical stop to fine-tune the retract position without adding external stops; it does not hold the load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX135-10S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX135-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 135 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50AX135-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×135 | 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 SAIJ50 Adjustable Cylinder SAIJ50AX135-10S Is Used
Machine Changeover
Dial in the 125-135mm travel window during product size changes to set new end positions without physically replacing the cylinder.
Sensor-Ready Setup
The integrated -S magnet works directly with CMSE reed and DMSE electronic switches in the dual barrel grooves for precise position feedback.
Corrosion-Resistant Actuation
The SUS420J2 stainless steel rod (option A) provides reliable, moderate-force actuation in environments where standard carbon rods might degrade.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX135-10S the Right Cylinder?
Choose this 50mm bore when a 40mm bore (offering 628N push force at 0.5MPa) lacks sufficient thrust, but a 63mm bore (1559N) would be physically oversized. The 10mm adjustment window is ideal for product changeovers on a line, allowing operators to dial in the exact end-stop without swapping the cylinder. For load-holding without continuous air pressure, consider the SAIL or BSAI series, as the SAIJ adjuster is not a locking mechanism.
Because the 135mm stroke is under the 300mm threshold, side-load risks are minimal, though the 20mm rod diameter and M16x1.5 thread provide robust mechanical stability for standard loads. As a dimensionally interchangeable ISO 15552 cylinder, it replaces equivalent profile cylinders using a PT tapered port thread and the SAIJ mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ50 Adjustable Cylinder SAIJ50AX135-10S FAQ
At 0.5MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. At the maximum 1.0MPa pressure, it delivers up to 200 kgf.
The rear adjuster screw lets you mechanically shorten the 135mm nominal stroke by up to 10mm, creating a 125-135mm usable travel window. It functions as an end-position stop and does not lock the load without live air.
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