Airtac SAIJ125 Adjustable Cylinder SAIJ125X375-30
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X375-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 375mm 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
- Stroke375 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X375-30
The AirTAC SAIJ125X375-30 is a double-acting ISO 15552 profile cylinder featuring a rear mechanical adjuster that permits up to 30mm of stroke trimming. This yields a usable travel window between 345mm and 375mm, enabling precise end-position tuning at commissioning without swapping the hardware. It delivers 6136N of push force and 5734N of pull force at 0.5 MPa, scaling up to 11045N push at 0.9 MPa.
The extruded aluminum barrel integrates sensor grooves on both sides for CMSE reed and DMSE electronic solid-state switches. The PT tapered port thread and carbon steel rod come standard, while the mounting hardware covers Basic, FA, LB, TC, FTC, TCM1, and TCM2 options. The rear stopper solely sets the travel end and relies on live air; for load-holding without pressure, consider SAIL or BSAI variants.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X375-30 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X375-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 375 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 SAIJ125X375-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×375 | 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 SAIJ125X375-30 Is Used
Product Changeover
Dial in the 345-375mm travel window during format changes on packaging lines without replacing the cylinder or repositioning external stops.
End-Position Tuning
Fine-tune the retract end-stop during machine commissioning to perfectly seat heavy 11045N loads at 0.9 MPa without mechanical binding.
Heavy Forming End-Stop
Set a precise mechanical stop for large press operations, ensuring consistent positioning while relying on the 40mm air cushion for deceleration.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X375-30 the Right Cylinder?
Selecting this 125mm bore is ideal when your application requires heavy thrust between the 80mm bore (2513N push at 0.5 MPa) and the 160mm bore (10053N push at 0.5 MPa). You would choose the adjustable SAIJ over a fixed SAI when a product line requires variable end-stops or rapid changeover flexibility, allowing you to dial in the exact 345-375mm travel without adding external stops. Since the nominal stroke is 375mm, an external guide is recommended to manage side loads on the 32mm rod over this extended travel distance. For a drop-in ISO 15552 replacement, match the 125mm bore, 375mm stroke, 30mm adjustment, PT G1/2 port, and desired mounting bracket.
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 SAIJ125X375-30 FAQ
At 0.5 MPa it provides 6136N of push force and 5734N of pull force. At 0.9 MPa, the push force increases to 11045N.
The rear adjuster screw lets you shorten the 375mm nominal stroke by up to 30mm, creating a 345-375mm travel window. It acts as a travel stop and does not hold the load without live air pressure.
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 SAIJ125X375-30
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.