Airtac SAIJ125 Adjustable Cylinder SAIJ125X35-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X35-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 35mm 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
- Stroke35 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X35-10
The AirTAC SAIJ125X35-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5MPa. It features a 32mm carbon steel rod with an M27x2 thread and PT tapered ports. The integrated adjustment screw provides a usable travel window of 25 to 35mm, allowing you to dial in the exact retract position without external stops.
This adjustable stopper is ideal for product changeovers, letting you fine-tune the end-of-stroke at commissioning rather than swapping the cylinder. The extruded aluminum barrel includes sensor grooves on both sides for CMSE or DMSE switches, though this specific SKU is configured without a magnet. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X35-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X35-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 35 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 SAIJ125X35-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×35 | 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 SAIJ125X35-10 Is Used
Press Fit Tuning
Fine-tune the 25-35mm travel window during press-fit operations to accommodate slight variations in material thickness without retooling the entire fixture.
Product Changeover
Rapidly adjust the retract end-stop on a packaging line when switching between different product sizes, utilizing the 10mm trim range for quick setup.
Short-Stroke Clamping
Apply 6136N of clamping force at 0.5MPa in compact machinery where a fixed end-position needs minor on-site calibration via the rear screw.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X35-10 the Right Cylinder?
Choose this 125mm bore when you need heavy thrust (6136N push at 0.5MPa) in a compact 35mm nominal stroke, or step down to a 100mm bore if 3927N is sufficient. The 10mm adjustment window is perfect for short-stroke clamping or pressing setups where exact end-positioning varies by part. For strokes of 300mm or longer, external guides are recommended to manage side-load, but this short-stroke unit relies on its robust 32mm rod for stability.
The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure; for pilot-operated load holding, consider the SAIL or BSAI series. To match this cylinder as an ISO 15552 replacement, verify the 125mm bore, 35mm stroke, 10mm adjustment, PT port thread, and mounting style. Operating speed is 30-500mm/s.
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 SAIJ125X35-10 FAQ
At 0.5MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At 0.7MPa, the push force increases to 8590N.
The rear adjuster screw allows you to shorten the nominal 35mm stroke by up to 10mm, creating a usable travel window of 25-35mm. This stopper only sets the end position and does not lock the load without air pressure.
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