Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 700mm 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
- Stroke700 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-100S
The AirTAC SAIJ125X700-100-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 600-700 mm usable travel window, letting you dial back the nominal 700 mm stroke by up to 100 mm during commissioning. Belonging to the 125 mm bore class, it generates 6136 N of push force and 5734 N of pull force at 0.5 MPa, making it well-suited for moving heavy loads.
This variant includes a magnetic piston for position sensing and uses a carbon steel rod with PT tapered ports. The extruded aluminum barrel features sensor grooves on both sides, allowing you to mount CMSE reed or DMSE electronic switches precisely where needed. The rear adjuster acts strictly as a travel stop to fine-tune the retract end position without adding external physical stops.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 700 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 SAIJ125X700-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×700 | 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 SAIJ125X700-100S Is Used
Large Press Setup
Fine-tune the 600-700 mm retract position on heavy presses during tooling changes without physically swapping the cylinder or adding external mechanical stops.
Product Size Changeover
Accommodate varying package lengths on a packaging line by adjusting the 100 mm travel window to set new retract end-stops on the fly.
Heavy Material Handling
Leverage the 6136 N push force at 0.5 MPa to push heavy pallets or workpieces, using the rear stopper to precisely dial in the final resting position.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-100S the Right Cylinder?
Select this 125 mm bore when your application requires substantial thrust—stepping down to a 100 mm bore yields 3927 N of push force at 0.5 MPa, while this model provides 6136 N. The 100 mm adjustment range is ideal for machinery requiring flexible end-positioning during product changeovers. Because the stroke is 700 mm, the 32 mm carbon steel rod will experience leverage forces; an external guide is strongly recommended to prevent side-load damage to the barrel seals.
For an exact ISO 15552 replacement, match the 125 mm bore, 700 mm stroke, 100 mm adjustment, PT G1/2 port, and -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Remember that a plain SAIJ does not hold its load without live air; the adjuster is a stop, not a lock. For fail-safe load holding, use an SAIL or BSAI cylinder.
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 SAIJ125X700-100S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 1251 kgf.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke from 700 mm down to 600 mm. It fine-tunes the retract end position at commissioning but does not lock the load; live air is required to hold position.
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