Airtac SAIJ125 Adjustable Cylinder SAIJ125X375-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X375-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 375mm 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
- Stroke375 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X375-10
The AirTAC SAIJ125X375-10 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 375mm travel that can be fine-tuned backward by up to 10mm, yielding a precise 365-375mm usable end-position window. This bore delivers substantial thrust, generating 6136N of pull force and 8590N of push force at 0.7MPa.
The carbon steel piston rod uses an M27x2 thread, engineered to handle high side loads, though the 375mm stroke length still necessitates an external guide to prevent rod deflection. This adjustable model uses a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options available on fixed variants.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X375-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X375-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 375 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 SAIJ125X375-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×375 | 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 SAIJ125X375-10 Is Used
Press Tonnage Calibration
Dial in the exact 365-375mm end-stop during press setup to accommodate varying material thicknesses without altering the machine frame.
Product Diversion
Fine-tune the retract position on a packaging line to handle different carton sizes on the fly during production changeovers.
Heavy Material Handling
Leverage the 8590N push force at 0.7MPa to shift heavy pallets or workpieces, using the adjuster to set the precise resting distance.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X375-10 the Right Cylinder?
Choose this 125mm bore over the smaller 100mm option when your application requires more muscle, stepping up from 3681N to 6136N of pull force at 0.5MPa. The 10mm rear adjustment screw is selected for minor commissioning tweaks or product changeovers, allowing you to dial in the exact end-stop without swapping cylinders or adding external stops. Standard PT tapered ports ensure a tight pneumatic seal.
Because the 375mm stroke exceeds 300mm, an external guide is highly recommended to manage side loads. Remember that the rear adjuster acts only as a travel stop and the air cushions only decelerate the load; neither will hold the payload securely without live air pressure. For true load-holding, consider the SAIL or BSAI series, or an external rod lock.
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 SAIJ125X375-10 FAQ
At a 0.5MPa operating pressure, this 125mm bore cylinder provides 6136N of pull force and 8590N of push force. At 0.9MPa, the push force increases to 11045N.
The rear adjuster screw allows you to shorten the 375mm nominal stroke by up to 10mm, creating a 365-375mm travel window. This stopper fine-tunes the end position at commissioning but does not lock the load without live air pressure.
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