Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-75S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 190mm 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
- Stroke190 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-75S
The AirTAC SAIJ125X190-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the nominal 190 mm travel by up to 75 mm. This yields a usable end-position window of 115 to 190 mm, which is ideal for machinery that requires rapid product-size changeovers without physically swapping cylinders. It delivers robust thrust, providing 6136 N of push force and 5734 N of pull force at 0.5 MPa.
This specific configuration features a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance in humid environments. The integrated magnet (-S) supports position sensing via AirTAC CMSE reed and DMSE electronic switches fitted into the extruded aluminum barrel's dual sensor grooves. Remember that the rear adjuster acts purely as a travel stop to fine-tune deceleration; it does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-75S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 190 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 SAIJ125AX190-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×190 | 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 SAIJ125AX190-75S Is Used
Product Size Changeovers
Quickly adapt a packaging line to different carton lengths by dialing in the retract stop within the 115-190 mm window, eliminating the need to swap out physical spacers.
Commissioning End-Position Tuning
Fine-tune the exact end-of-stroke position during machine setup to synchronize multiple axes without adding external stopper blocks to the frame.
Heavy-Duty Forming Press
Leverage the 6136 N push force at 0.5 MPa for pressing or holding heavy assemblies, using the rear screw to precisely set the engagement depth.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-75S the Right Cylinder?
Select this 125 mm bore when your application demands higher force than an 80 mm cylinder (which provides 2513 N push at 0.5 MPa) but does not require the full 10053 N thrust of a 160 mm variant. The 75 mm adjustment range is particularly valuable when commissioning a new line with slightly varying product lengths, allowing you to set precise retract endpoints on the fly instead of machining external stops. For any load-holding requirements without continuous air pressure, this cylinder is not suitable—consider the AirTAC SAIL (air-released lock) or BSAI (clamp-lock) series instead.
When replacing an ISO 15552 cylinder, match these exact attributes: 125 mm bore, 190 mm stroke, up to 75 mm adjustment, PT tapered port threads, a maximum operating speed of 30-500 mm/s, and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 footprints, intentionally omitting FB, CA, CB, and CR brackets. Because the 190 mm stroke is relatively short for this bore, side-load risks are minimal, but an external guide is still recommended for heavy lateral loads.
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 SAIJ125AX190-75S FAQ
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective stroke from the nominal 190 mm down to 115 mm. This creates a 75 mm adjustable travel window for fine-tuning end positions at commissioning. The adjuster only sets the travel end and does not lock or hold the load without live air pressure.
At a 0.5 MPa operating pressure, the SAIJ125X190-75-S generates 6136 N of push force and 5734 N of pull force. It can deliver up to 8590 N of push force at 0.7 MPa, with a maximum rated pressure of 1.0 MPa.
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