Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-30S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-30S 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 SAIJ125AX190-30S
The AirTAC SAIJ125X190-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the 190 mm nominal travel by up to 30 mm. This yields a precise 160-190 mm usable window, allowing exact end-position tuning at commissioning without adding external stops or swapping the unit. It delivers 6133 N of push force at 0.5 MPa and features a SUS420J2 stainless steel rod for superior corrosion resistance.
This model includes a magnet for position sensing and is fully compatible with AirTAC CMSE reed and DMSE electronic switches fitted into the dual-side sensor grooves on the extruded aluminum barrel. Fluid supply connects via G1/2 PT tapered ports. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure; for true load-holding without pneumatic pressure, consider the SAIL or BSAI series.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-30S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-30S |
|---|---|
| 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 SAIJ125AX190-30S
| 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 SAIJ125AX190-30S Is Used
Product Changeover
Dial in the exact retract distance when switching product sizes on a packaging line, utilizing the 160-190 mm travel window to avoid repositioning physical hard stops.
Machine Setup
Fine-tune the end-of-stroke position during initial commissioning, using the rear adjuster to perfectly time a heavy press or clamping motion without cylinder removal.
Heavy Forming
Leverage the 6136 N push force at 0.5 MPa for metal bending or forming tasks, using the adjustable stop to compensate for material thickness variations.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX190-30S the Right Cylinder?
Choose this 125 mm bore when your application requires substantial thrust in the 6000 N range at 0.5 MPa, but you need on-machine flexibility to trim the stroke for product changeovers. If your force requirements are lower, stepping down to a 100 mm bore yields 3927 N of push force, while moving up to a 160 mm bore provides 10053 N. The adjustable rear stopper is ideal for fine-tuning the retract position during setup, whereas a fixed SAI cylinder locks you into a single exact dimension.
When replacing an ISO 15552 cylinder, match the 125 mm bore, 190 mm stroke, 30 mm adjustment range, G1/2 PT port thread, and the -S magnet requirement. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because this unit features a 190 mm stroke, it is short enough to avoid severe rod deflection, but any long unsupported loads should still use an external guide to prevent side-load damage to the rod seals.
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 SAIJ125AX190-30S FAQ
At a 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. If you need higher force, increasing the pressure to 0.7 MPa yields 8590 N of push force.
The rear adjuster acts as an external stopper that lets you shorten the 190 mm nominal stroke by up to 30 mm, creating a 160-190 mm usable travel window. It only sets the end position and does not lock or hold the load without live air pressure.
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