Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-40S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 60mm 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
- Stroke60 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-40S
The AirTAC SAIJ125X60-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5 MPa. It features a carbon steel rod and a PT tapered port. Because the nominal 60mm stroke can be dialed back by up to 40mm, this SKU yields a highly versatile 20-60mm usable travel window for precise end-position tuning.
The integrated -S magnet enables position detection with AirTAC CMSE reed or DMSE electronic solid-state sensors housed in the dual-side barrel grooves. Unlike fixed-stroke actuators, the external rear stopper allows you to shorten the effective stroke at commissioning without swapping the cylinder or adding external stops. The adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-40S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 60 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 SAIJ125X60-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×60 | 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 SAIJ125X60-40S Is Used
Product Size Changeovers
Leverage the 20-60mm travel window to rapidly adapt end-stops for varying product lengths on the same production line without mechanical rebuilds.
Clamping Force Tuning
Utilize the 6136N thrust at 0.5 MPa to securely clamp workpieces while fine-tuning the rear stopper to prevent over-travel and material deformation.
Machine Commissioning
Dial in the exact end-position during setup using the rear adjuster, eliminating the need to physically swap out cylinders to achieve the perfect stroke length.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X60-40S the Right Cylinder?
Choose this 125mm bore when an 80mm cylinder lacks thrust, as stepping down to an 80mm bore yields 2513N push at 0.5 MPa. The 40mm adjustment range is exceptionally broad for a 60mm stroke, making it ideal for machines requiring rapid product-size changeovers. To replace an ISO 15552 cylinder, match the 125mm bore, 60mm stroke, PT port thread, and -S magnet.
For load-holding without continuous air pressure, note that the rear adjuster is a stop, not a lock. You must use an external pilot-operated check valve or select a related AirTAC SAIL pneumatic lock or BSAI clamp-lock cylinder. Mounting options include 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 SAIJ125X60-40S FAQ
At 0.5 MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At 0.7 MPa, the push force increases to 8590N.
The rear adjusting screw allows you to trim the effective travel by up to 40mm. This creates a usable stroke window of 20-60mm, letting you set the exact end-position at commissioning without changing the cylinder.
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