Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-30S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-30S 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 SAIJ125X700-30S
The AirTAC SAIJ125X700-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 700 mm nominal stroke that can be dialed back by up to 30 mm, yielding a usable travel window of 670 to 700 mm. This bore size generates 6136 N of push force and 5734 N of pull force at 0.5 MPa, making it suitable for heavy-duty positioning tasks.
Featuring a carbon steel piston rod and a PT tapered port thread, this unit includes a magnet for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel incorporates sensor grooves on both sides. The rear adjuster acts purely as a travel stop to decelerate the load, meaning it will not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-30S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-30S |
|---|---|
| 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 SAIJ125X700-30S
| 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 SAIJ125X700-30S Is Used
Variable End-Stop Positioning
Dial in the retract position from 670 to 700 mm during machine setup to accommodate varying material lengths without changing the cylinder.
Product Size Changeover
Quickly adjust the stroke end-point on packaging lines when switching between different product sizes, saving downtime on mechanical modifications.
Heavy-Duty Clamping Tuning
Fine-tune the clamping depth on heavy assemblies by trimming the travel back up to 30 mm, ensuring precise contact without over-stroking.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-30S the Right Cylinder?
Choose this adjustable-stroke cylinder when your application requires fine-tuning the retract end position during commissioning or product changeover without adding external stops. If you need less force, stepping down to a 100 mm bore yields 3927 N of push force at 0.5 MPa. For load-holding without continuous air pressure, this cylinder is insufficient; consider an SAIL pneumatic lock or BSAI clamp-lock cylinder instead.
To match this ISO 15552 interchangeable unit, specify a 125 mm bore, 700 mm stroke, 30 mm adjustment range, PT G1/2 port, and the -S magnet option. Because the stroke is 700 mm, the 32 mm diameter carbon steel rod will experience leverage under side loads; an external guide rail is recommended to prevent rod binding and premature seal wear.
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 SAIJ125X700-30S FAQ
At 0.5 MPa, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 1251 kgf of force.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke by up to 30 mm, providing a usable travel window of 670 to 700 mm. It only sets the travel end and does not lock the load without live air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ125 Adjustable Cylinder SAIJ125X700-30S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.