Airtac SAIJ125 Adjustable Cylinder SAIJ125X150-30S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X150-30S 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 SAIJ125X150-30S
The AirTAC SAIJ125X150-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of pull force at 0.5 MPa. It features a carbon steel piston rod and a PT tapered port thread. The built-in magnet enables position feedback via CMSE reed and DMSE electronic sensors. By turning the rear stopper screw, you achieve a usable travel window of 120-150 mm without adding external stops.
This adjustable-stroke design allows fine end-position tuning during commissioning or product changeover. The rear adjuster acts purely as a travel stop to set deceleration alongside the variable air cushions; it does not hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X150-30S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X150-30S |
|---|---|
| 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 SAIJ125X150-30S
| 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 SAIJ125X150-30S Is Used
Variable End-Stop Setup
Dial in the exact 120-150 mm travel distance during machine commissioning to accommodate different product lengths without physically changing the cylinder.
Product Changeover
Quickly adjust the rear stopper on packaging lines when switching between carton sizes, using the 30 mm trim range to set new end positions rapidly.
Heavy-Duty Positioning
Leverage the 6136N pull force to move heavy assemblies into place, relying on the DMSE solid-state sensors to confirm the adjusted end position.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X150-30S the Right Cylinder?
Choose this 125 mm bore when a 100 mm bore (providing 3927N push at 0.5 MPa) lacks the force needed for heavy positioning, but you want to avoid stepping up to a 160 mm unit. The 30 mm adjustment window is ideal for lines running variable product sizes, letting you dial in the end stop on the fly rather than swapping a fixed-stroke SAI cylinder. Remember that the rear adjuster is a stop, not a lock; it cannot hold loads without continuous air pressure.
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 SAIJ125X150-30S FAQ
At 0.5 MPa, this 125 mm bore cylinder provides 6136N of pull force and 8590N of push force. At the maximum operating pressure of 1.0 MPa, it delivers up to 1251 kgf.
The rear adjuster screw lets you shorten the 150 mm nominal stroke by up to 30 mm, creating a usable travel window of 120-150 mm. This allows precise end-position tuning without swapping the cylinder or adding external stops.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ125 Adjustable Cylinder SAIJ125X150-30S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.