Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-40
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-40 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 SAIJ125X110-40
The AirTAC SAIJ125X110-40 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers 6136N of push force and 5734N of pull force at 0.5 MPa, utilizing a 32mm carbon steel rod and G1/2 port. By turning the rear screw, you achieve a usable travel window of 70-110mm, allowing precise end-position tuning without swapping hardware.
This extruded aluminum barrel includes sensor grooves on both sides for CMSE reed or DMSE electronic switches if a magnet is added later. The rear stopper relies on the internal air cushion to decelerate the load, meaning it functions strictly as a travel stop rather than a lock. For applications requiring position holding without live air pressure, consider the SAIL or BSAI locking cylinder variants.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-40 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-40 |
|---|---|
| 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 SAIJ125X110-40
| 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 SAIJ125X110-40 Is Used
Product Changeovers
Dial in the exact 70-110mm stroke during format changes on packaging lines without replacing the cylinder or adding shims.
Precision End Stops
Fine-tune the retract position to ±0mm mechanical hard stops for high-accuracy pressing or forming tasks.
Heavy Assembly Jigs
Leverage the 6136N push force to move heavy components while adjusting the travel window to fit various jig sizes.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X110-40 the Right Cylinder?
Select this 125mm bore when a 100mm bore provides insufficient thrust (offering 3927N push at 0.5 MPa) and a 160mm bore is excessive. The 40mm adjustment range is ideal for product changeovers, letting you dial in the exact 70-110mm stroke on the fly instead of machining external stops. When specifying a replacement, match the 110mm stroke, 40mm adjuster, PT tapered port thread, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
Because the 110mm stroke is relatively short for this large bore, side-loading is less severe, but the heavy 32mm rod still requires external guiding for offset loads. Operating speed spans 30-500mm/s, and the cylinder must not be used to hold loads pneumatically without 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 SAIJ125X110-40 FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At the maximum 1.0 MPa pressure, it achieves 1251 kgf.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 110mm nominal stroke by up to 40mm. This creates a usable travel window of 70-110mm, which can be fine-tuned during commissioning without changing the cylinder.
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