Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-30S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-30S 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 SAIJ125X190-30S
The AirTAC SAIJ125X190-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 160 to 190 mm. Delivering a robust 6136 N push force at 0.5 MPa, it handles heavy-duty positioning tasks with precision. The extruded aluminum barrel features sensor grooves on both sides, and the included magnet (-S) directly supports AirTAC CMSE reed and DMSE electronic solid-state switches for exact end-of-travel detection.
This model utilizes a PT tapered port thread and a 32 mm carbon steel rod. Because the rear adjuster functions strictly as a mechanical stop to fine-tune the retract position, it will not hold a load without live air pressure. For applications requiring true pneumatic locking, related types like the SAIL or BSAI are recommended.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-30S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-30S |
|---|---|
| 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 SAIJ125X190-30S
| 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 SAIJ125X190-30S Is Used
Variable End Stops
Dial in the exact retract distance during machine setup to accommodate new part dimensions without physically replacing the actuator.
Product Changeover
Quickly adjust the 160-190 mm travel window on packaging lines when switching between different product sizes or formats.
Heavy-Duty Positioning
Leverage the 6136 N push force at 0.5 MPa to move heavy pallets or tooling fixtures into precise working positions.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X190-30S the Right Cylinder?
Selecting this 125 mm bore over a smaller 100 mm option provides a significant thrust upgrade, stepping up from 3927 N to 6136 N at 0.5 MPa. The adjustable stroke is ideal for product changeovers, allowing operators to dial in the exact end-stop without swapping cylinders or adding external stops. It supports a mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2. Since the 190 mm stroke is below the 300 mm threshold, side-load risks are minimal, though an external guide remains beneficial for heavy lateral loads. To replace an ISO 15552 cylinder, match the 125 mm bore, 190 mm stroke, 30 mm adjustment, PT port, and -S magnet.
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 SAIJ125X190-30S FAQ
At a 0.5 MPa operating pressure, this 125 mm bore cylinder generates 6136 N of push force and 5734 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 1251 kgf.
The rear adjuster acts as a mechanical stop that lets you trim the effective travel back by up to 30 mm from the 190 mm nominal stroke, creating a usable 160 to 190 mm positioning window for fine-tuning.
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