Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 195mm 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
- Stroke195 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-100S
The AirTAC SAIJ125X195-100-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It features a 125 mm bore and a 195 mm nominal stroke, yielding a usable travel window of 95 to 195 mm. This wide adjustment band allows operators to dial in the exact retract end-position during commissioning without swapping hardware. Operating at 0.5 MPa, it delivers 6136 N of push force and 5734 N of pull force.
This unit includes a magnet (-S) for electronic DMSE or reed CMSE switches, which seat cleanly into the dual sensor grooves on the extruded aluminum barrel. It uses a PT tapered port and a robust 32 mm carbon steel rod with an M27x2 thread, providing substantial rigidity. The rear screw functions purely as a travel stop to set deceleration alongside the standard air cushions; it is not a locking device.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 195 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 SAIJ125X195-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×195 | 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 SAIJ125X195-100S Is Used
Product Size Changeovers
Quickly modify the 95 to 195 mm travel window during production line changeovers to accommodate varying package dimensions without changing the cylinder.
Machine Setup Calibration
Fine-tune the retract end-position during initial commissioning to achieve precise mechanical alignment, avoiding the need for external stopper blocks.
Variable End-Stop Forming
Adjust the rear stroke stop on the fly for heavy-duty forming or pressing tasks that require different material penetration depths within the same fixture.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X195-100S the Right Cylinder?
Selecting this 125 mm bore makes sense when an application requires roughly 6000 N of thrust at 0.5 MPa but demands flexibility in the final end-stop position. If you need less force, stepping down to an 80 mm bore yields 2513 N of push force at 0.5 MPa. The 100 mm adjustment range is ideal for product-size changeovers on a line, offering a 95 to 195 mm travel window. Because the nominal stroke is 195 mm, an external guide is not strictly mandated for side loads, but the 32 mm rod still requires alignment to prevent premature seal wear.
For an exact ISO 15552 replacement, match the 125 mm bore, 195 mm stroke, 100 mm adjustment, PT port thread, and the -S magnet. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets. Keep in mind the rear adjuster only trims the retract position; it will not hold a load safely without continuous air pressure. For true load-holding, consider an external rod lock or the AirTAC SAIL 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 SAIJ125X195-100S FAQ
At an operating pressure of 0.5 MPa, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. If operated at 0.7 MPa, the push force increases to 8590 N.
The rear adjuster screw allows you to shorten the effective stroke by up to 100 mm. This creates a usable travel window of 95 to 195 mm, letting you set the exact retract end-position during setup without replacing the cylinder.
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