Airtac SAIJ125 Adjustable Cylinder SAIJ125X200-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X200-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 200mm 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
- Stroke200 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X200-100S
The AirTAC SAIJ125X200-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits a usable travel window of 100 to 200 mm. Equipped with a PT tapered G1/2 port and a 32 mm carbon steel rod, it generates 6136 N of push thrust at 0.5 MPa, making it suited for heavy linear motion. The integrated -S magnet enables position feedback via CMSE reed and DMSE electronic sensors.
This adjustable design allows operators to dial in the exact end-of-stroke position during commissioning without adding external stops. The rear adjuster functions purely as a mechanical stop to set the retract position, not as a load-holding lock, so live air pressure is required to maintain force. It uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB and CA options.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X200-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X200-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 200 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 SAIJ125X200-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×200 | 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 SAIJ125X200-100S Is Used
Variable End-Stop Setup
Dial in the exact retract position from 100 to 200 mm during machine commissioning to accommodate different carton sizes without swapping hardware.
Product Changeover
Rapidly adjust the effective stroke length on a production line when switching between varying product dimensions, minimizing downtime.
Heavy Pressing Force
Leverage the 6136 N push force at 0.5 MPa for heavy-duty pressing or holding tasks that require precise end-position tuning.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X200-100S the Right Cylinder?
Select this 125 mm bore when a machine requires substantial force, such as the 6136 N push at 0.5 MPa, combined with extreme flexibility in end-position tuning. The 100 mm adjustment range is particularly valuable for product changeovers on a packaging line, allowing the stroke to be shortened from 200 mm down to 100 mm on the fly. If less force is needed, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa. For load-holding without continuous air pressure, consider the SAIL or BSAI series instead, as this cylinder relies on live air. As a dimensionally interchangeable ISO 15552 cylinder, it matches standard bore, 200 mm stroke, PT G1/2 port, and TC/LB mounting footprints.
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 SAIJ125X200-100S FAQ
At a 0.5 MPa operating pressure, this 125 mm bore cylinder produces 6136 N of push thrust and 5734 N of pull thrust. At the maximum 1.0 MPa pressure, the push force reaches 1251 kgf.
The rear adjuster screw acts as a mechanical stop that lets you trim the effective stroke back by up to 100 mm, providing a usable travel window of 100 to 200 mm. It sets the end position but does not lock the load without live air pressure.
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