Airtac SAIJ50 Adjustable Cylinder SAIJ50AX25-10S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX25-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 25mm 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
- Stroke25 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 SAIJ50AX25-10S
The AirTAC SAIJ50X25-10-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers a robust 982N of push force and 825N of pull force at 0.5 MPa, making it well-suited for medium-duty positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides, and this configuration features an SUS420J2 stainless steel rod and a built-in magnet for use with CMSE and DMSE sensors.
The external rear adjusting screw allows you to fine-tune the effective stroke within a 15-25 mm usable travel window, providing up to 10 mm of retraction adjustment. This mechanism acts strictly as a mechanical stop to set the end position and relies on the integrated variable air cushions for deceleration; it does not hold the load without live air pressure. For applications requiring true position holding, consider the SAIL or BSAI series instead.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX25-10S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX25-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 25 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 SAIJ50AX25-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×25 | 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 SAIJ50AX25-10S Is Used
Machine Changeover
Dial in the exact retract distance within the 15-25 mm window when switching product sizes on a packaging line, eliminating the need for physical spacer replacements.
Precision End-Stops
Fine-tune the final position of a clamping or pressing mechanism at commissioning, using the rear stopper to compensate for mechanical tolerance stack-up.
Variable Positioning
Adjust the stroke length on the fly for automated assembly stations that need to present parts at slightly varying heights without reprogramming the motion controller.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX25-10S the Right Cylinder?
Select this 50 mm bore model when your application requires a 15-25 mm stroke window and needs to dial in the exact end-stop during commissioning without swapping cylinders or adding external stops. If you need less force, the 40 mm bore offers 628N push at 0.5 MPa; if your load demands more, stepping up to the 63 mm bore provides 1559N. Because this is a short 25 mm stroke, side-loading risks are minimal, but always ensure the M16x1.5 rod thread is aligned properly.
To match this exact configuration as an ISO 15552 replacement, specify a 50 mm bore, 25 mm nominal stroke, 10 mm adjustment range, PT tapered port threads, SUS420J2 rod material, and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR styles found on other variants.
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 SAIJ50AX25-10S FAQ
At a standard 0.5 MPa operating pressure, this 50 mm bore cylinder generates 982N of push force and 825N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 200 kgf.
The rear adjuster screw lets you shorten the 25 mm nominal stroke by up to 10 mm, creating a 15-25 mm usable travel window. It functions as a mechanical stop to set the end position and does not lock the load without continuous air pressure.
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