Airtac SAIJ125 Adjustable Cylinder SAIJ125X150-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X150-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 150mm 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
- Stroke150 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X150-10
The AirTAC SAIJ125X150-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push thrust at 0.5MPa. Its external adjustment screw allows you to fine-tune the travel window down to 140-150mm, providing precise end-position control during commissioning without swapping hardware. The extruded aluminum barrel features sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches, though this non-magnetized SKU requires a separate -S variant for position sensing.
Built to ISO 15552 dimensional interchangeability standards, this 125mm bore unit uses a robust 32mm carbon steel rod with an M27x2 thread to handle high side loads. The mounting set is reduced to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options. Operating at speeds of 30-500mm/s, it relies on adjustable air cushions at both ends to decelerate heavy loads smoothly.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X150-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X150-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 150 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 SAIJ125X150-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×150 | 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 SAIJ125X150-10 Is Used
Machine Setup Calibration
Dial in the exact 140-150mm end-stop during initial commissioning to perfect tooling alignment without machining custom spacers.
Product Changeover
Quickly trim the stroke up to 10mm when switching the production line to a slightly shorter package or workpiece size.
Heavy Assembly Press
Leverage 6136N of thrust at 0.5MPa for pressing operations while using the rear screw to fine-tune the final contact position.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X150-10 the Right Cylinder?
Select this 125mm bore model when an 80mm bore falls short on power, as stepping down to an 80mm cylinder drops the 0.5MPa push force to 2513N. The 10mm rear adjuster is ideal for product changeovers where exact end-stops must be dialed in on the fly, unlike a fixed-stroke SAI cylinder. For strokes of 150mm, the 32mm rod handles moderate side loads, but long unsupported travel still requires an external guide. When replacing an ISO 15552 cylinder, match the 125mm bore, 150mm stroke, 10mm adjustment, PT tapered port, and mounting style. Remember that the rear adjuster is a travel stop, not a lock; for load-holding without live air pressure, specify an AirTAC SAIL or BSAI cylinder.
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 SAIJ125X150-10 FAQ
At 0.5MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At the maximum 1.0MPa pressure, it can deliver up to 1251kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 150mm nominal stroke by up to 10mm, creating a precise 140-150mm travel window. It only sets the end position and does not lock the load without live air.
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