Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 600mm 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
- Stroke600 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-100S
The AirTAC SAIJ125X600-100-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 500 to 600 mm. It features a carbon steel piston rod and a PT tapered port thread. Fitted with a standard magnet, it supports AirTAC CMSE reed and DMSE electronic solid-state sensors for precise position detection. Generating 6136 N of pull force at 0.5 MPa, it is built for heavy-duty operations.
The integrated rear stopper allows you to fine-tune the end position at commissioning without swapping hardware or adding external stops. This adjustable-stroke design uses a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. The rear adjuster acts purely as a travel stop to set deceleration, not as a lock, meaning it will not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 600 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 SAIJ125X600-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×600 | 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 SAIJ125X600-100S Is Used
Product Changeovers
Dial in the stroke from 500 to 600 mm during SKU changeovers to adapt machinery for different package lengths without changing cylinders.
End-Position Tuning
Fine-tune the retract end-position at machine commissioning to perfect a heavy-duty press fit, avoiding the need for external mechanical stops.
Heavy Assembly Lines
Leverage 6136 N of pull force at 0.5 MPa to move heavy pallets or components, using the rear stopper to tweak the final resting position.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X600-100S the Right Cylinder?
Choose this 125 mm bore when you need substantial thrust, such as the 6136 N pull at 0.5 MPa, but could step down to the 100 mm bore offering 3681 N pull if your load requirements are lighter. The adjustable 500 to 600 mm window is ideal for product changeovers on a line, allowing variable end-stops without replacing the cylinder. For load-holding without live pressure, select the SAIL or BSAI series instead, as the SAIJ adjuster is only a stop.
With a 600 mm stroke, the 32 mm rod diameter handles high side loads well, but an external guide is still recommended for long unsupported travel. To replace an ISO 15552 cylinder, match the 125 mm bore, 600 mm stroke, 100 mm adjustment, PT port, and the -S magnet. Operating speed is capped at 30-500 mm/s for this large bore.
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 SAIJ125X600-100S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of pull force and 8590 N of push force at 0.7 MPa.
The rear adjuster acts as a travel stop, allowing you to shorten the effective stroke by up to 100 mm. This creates a 500 to 600 mm usable travel window for fine-tuning end positions without replacing the cylinder.
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