Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-40S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 110mm 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
- Stroke110 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-40S
The AirTAC SAIJ125X110-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 6136N push force at 0.5 MPa and features a built-in magnet for position sensing. The PT tapered port threads and carbon steel rod ensure durable performance in demanding industrial environments.
This model provides a 70-110mm adjustable travel window, allowing you to trim the nominal 110mm stroke by up to 40mm during commissioning. You can fine-tune the retract end position without swapping the cylinder or adding external stops. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept CMSE reed or DMSE electronic switches for precise end-of-stroke detection.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-40S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 110 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 SAIJ125X110-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×110 | 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 SAIJ125X110-40S Is Used
Product Size Changeovers
Dial in the 70-110mm travel window during format changeovers to accommodate different package lengths without changing the cylinder.
Machine Setup Tuning
Fine-tune the retract end position at commissioning to achieve precise mechanical alignment without machining external stoppers.
Heavy Material Handling
Leverage the 6136N push force to move heavy pallets or workpieces while adjusting the stroke to clear obstructions.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-40S the Right Cylinder?
Choose this 125mm bore when a 100mm bore (offering 3927N push at 0.5 MPa) lacks the necessary thrust, but you want to avoid stepping up to a 160mm bore. The adjustable stroke is perfect for production lines handling varying product sizes, enabling rapid changeovers by dialing in the exact end-stop. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true pneumatic locking, consider the SAIL or BSAI series.
When replacing an ISO 15552 cylinder, verify the 125mm bore, 110mm nominal stroke, 40mm adjustment range, PT port threads, and the required -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. The 32mm rod and M27x2 thread provide high rigidity, though any application approaching the 500mm maximum standard stroke should incorporate external guides to manage side loading.
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 SAIJ125X110-40S FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. It can reach a maximum push force of 11045N at 0.9 MPa.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke from its 110mm nominal length down to 70mm. It sets the travel end but does not lock the position without continuous air pressure.
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