Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-20
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-20 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 SAIJ125X190-20
The AirTAC SAIJ125X190-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that provides a 170-190 mm usable travel window. Operating at 0.5 MPa, it delivers 6136 N of pull force, making it suitable for heavy-duty positioning tasks.
This model features a 32 mm carbon steel rod and a PT tapered G1/2 port. It includes variable air cushions at both ends and utilizes an extruded aluminum barrel with sensor grooves on both sides, though this specific SKU is configured without a magnet for CMSE or DMSE switches.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-20 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-20 |
|---|---|
| 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 SAIJ125X190-20
| 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 SAIJ125X190-20 Is Used
Heavy-Duty Positioning
Dial in the exact 170-190 mm end-stop for large fixtures during machining or assembly changeovers.
Product Size Changeovers
Quickly adapt the retract distance on packaging lines when processing different large-format product sizes.
Machine Setup Tuning
Eliminate the need for external stopper blocks during initial commissioning by using the built-in rear adjuster.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-20 the Right Cylinder?
Choose this 125 mm bore when you need significantly more thrust than the 80 mm option (which provides 2268 N pull at 0.5 MPa). The 20 mm adjustment range is ideal for fine-tuning the retract end position during machine setup or product changeover without swapping the cylinder. For strokes of 300 mm or more, an external guide is recommended to handle side loads, though this 190 mm stroke is well within standard limits. Remember that the rear adjuster acts only as a travel stop, not a lock; for load-holding without live air pressure, consider the SAIL or BSAI series.
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 SAIJ125X190-20 FAQ
At 0.5 MPa, this 125 mm bore cylinder provides 6136 N of pull force and 8590 N at 0.7 MPa. The maximum push force is 11045 N at 0.9 MPa.
The rear adjuster allows you to shorten the 190 mm nominal stroke by up to 20 mm, creating a 170-190 mm usable travel window. It functions as a mechanical stop for end-position tuning and does not lock the load without live air.
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Standard models usually ship in 3-4 days.
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