Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-100
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-100 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 SAIJ125X190-100
The AirTAC SAIJ125X190-100 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5 MPa. It features a 125mm bore, a 32mm carbon steel piston rod with an M27x2 thread, and PT tapered porting. The integrated rear stopper allows you to fine-tune the effective travel anywhere within a 90-190mm window, providing exact end-position calibration without swapping out the entire unit.
This adjuster functions strictly as a travel stop to set the retract deceleration point, not as a locking mechanism, meaning it cannot hold a load without continuous live air pressure. The extruded aluminum barrel includes sensor grooves on both sides for straightforward positioning feedback. For applications requiring positive load-holding without pneumatic pressure, integrating an external rod lock or exploring the AirTAC SAIL or BSAI series is recommended.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-100 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-100 |
|---|---|
| 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 SAIJ125X190-100
| 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 SAIJ125X190-100 Is Used
Variable Product Changeover
Quickly reconfigure the 90-190mm travel window for different part lengths on a machining line without physically replacing the cylinder or adding spacer blocks.
Heavy Forming End-Stop
Leverage the 6136N thrust at 0.5 MPa for pressing operations, using the rear adjuster to precisely set the penetration depth during initial machine commissioning.
Actuator Position Tuning
Fine-tune the retract distance in automated assembly stations, relying on the rear stopper to establish exact physical boundaries for each cycle.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-100 the Right Cylinder?
Choose this 125mm bore cylinder when a machine requires heavy thrust (6136N push at 0.5 MPa) alongside highly variable end-stops, such as accommodating multiple product sizes on a single line. If your application needs less force, stepping down to a 100mm bore yields 3927N of push force, whereas upgrading to a 160mm bore provides 10053N. The generous 100mm adjustment range allows operators to dial in the exact 90-190mm stroke during commissioning, entirely avoiding the need to bolt on external physical stops.
When replacing an ISO 15552 cylinder, verify the 125mm bore, 190mm nominal stroke, PT port threads, and the 100mm adjustment requirement. Because the stroke is 190mm, ensure the 32mm rod and M27x2 thread are adequately supported to handle side loads, utilizing an external guide if the load is heavy or unbalanced. This profile cylinder supports a speed range of 30-500mm/s and uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options.
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 SAIJ125X190-100 FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. If operated at 0.7 MPa, the push force increases to 8590N.
The rear adjuster acts as a mechanical stop that allows you to shorten the 190mm nominal stroke by up to 100mm, creating a usable travel window of 90-190mm. It sets the end position but does not lock the load without live air pressure.
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