Airtac SAIJ125 Adjustable Cylinder SAIJ125AX120-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX120-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 120mm 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
- Stroke120 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX120-100S
The AirTAC SAIJ125X120-100-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5MPa. Because this specific SKU carries a 100mm adjustment code on a 120mm nominal stroke, it provides an exceptionally wide usable travel window of 20 to 120mm. This allows you to dial in the exact retract end-position during commissioning without swapping out the physical cylinder.
This model features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel includes sensor grooves on both sides, and fluid control is managed via PT tapered ports sized at G1/2. Operating speed spans 30-500mm/s, supported by 40mm variable air cushions at both ends.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX120-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX120-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 120 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 SAIJ125AX120-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×120 | 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 SAIJ125AX120-100S Is Used
Variable End-Stop Positioning
Ideal for assemblies requiring precise retract distances. The 20-120mm travel window lets operators fine-tune the end position on the fly without installing separate external stopper blocks.
Product Size Changeover
Perfect for packaging lines handling varied product lengths. Quickly dial back the stroke by up to 100mm during format changes to accommodate shorter items seamlessly.
High-Force Machine Setup
Delivers 8590N of push force at 0.7MPa for heavy clamping or forming tasks, while the rear adjuster allows exact positioning of the retracted tool rest state during initial machine commissioning.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX120-100S the Right Cylinder?
Select this 125mm bore cylinder when an application demands high force combined with extreme flexibility in the retract end-stop. If 6136N of push force at 0.5MPa is more than required, stepping down to a 100mm bore yields 3927N while saving space. Choose this adjustable-stroke design over a fixed SAI model when you need to accommodate multiple product sizes on the same line without adding external mechanical stops. For stroke lengths of 300mm or more, always factor in an external guide to support the load and mitigate side-load wear.
To match this ISO 15552 dimensionally interchangeable cylinder, confirm the 125mm bore, 120mm nominal stroke, 100mm adjustment, G1/2 PT ports, and the -S magnet. Note that the rear adjuster acts strictly as a travel stop and does not hold the load without live air; for true load-holding without pneumatic pressure, consider the SAIL or BSAI series instead. The available mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ125AX120-100S FAQ
At 0.5MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. If operated at 0.7MPa, the push force increases to 8590N.
The rear adjuster screw allows you to trim the effective stroke by up to 100mm. Given the 120mm nominal stroke, this creates a usable travel window of 20 to 120mm, letting you set the exact retract position without changing the cylinder.
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 SAIJ125AX120-100S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.