Airtac SAIJ125 Adjustable Cylinder SAIJ125X800-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X800-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 800mm 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
- Stroke800 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X800-10
The AirTAC SAIJ125X800-10 is a double-acting, single-rod ISO 15552 profile cylinder engineered with a rear mechanical adjuster. It delivers 6136N of push force and 5734N of pull force at 0.5 MPa, providing robust actuation for heavy industrial loads. The integrated extruded aluminum barrel features sensor grooves on both sides, allowing you to easily mount CMSE reed or DMSE electronic switches for position feedback.
Equipped with a 10mm adjustment range, this specific SKU creates a precise 790-800mm usable travel window. This allows you to fine-tune the retract end-position at commissioning without adding external stops or swapping the cylinder. It features a 32mm carbon steel piston rod with an M27x2 thread, and utilizes a PT tapered port thread for secure pneumatic connections.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X800-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X800-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 800 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 SAIJ125X800-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×800 | 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 SAIJ125X800-10 Is Used
Machine Changeover
Dial in the 790-800mm travel window during product size changes to perfectly reposition heavy actuators without mechanical rebuilds.
Heavy Press Tuning
Fine-tune the end-stop on large pressing equipment at commissioning, using the 6136N thrust to seat components accurately.
Material Handling
Handle variable payload sizes on automated lines by adjusting the retract position by up to 10mm to accommodate different pallet depths.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X800-10 the Right Cylinder?
Choose this 125mm bore when an 80mm cylinder (providing 2513N push at 0.5 MPa) lacks the necessary thrust, but before stepping up to a 160mm bore (10053N push) which adds excessive bulk. The adjustable stroke is ideal for machine setups requiring variable end-stops or product changeovers, offering flexibility that a fixed-stroke SAI cylinder cannot match. Because the nominal stroke is 800mm, an external guide is strongly recommended to prevent excessive side-loading on the rod.
When integrating this cylinder, remember the rear adjuster acts strictly as a travel stop, not a locking device. It cannot hold a load without continuous live air pressure; for true load-holding, select a SAIL pneumatic lock or BSAI clamp-lock cylinder. This model uses the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and is dimensionally interchangeable per ISO 15552.
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 SAIJ125X800-10 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 can deliver up to 1251 kgf.
The rear adjuster screw lets you shorten the nominal 800mm stroke by up to 10mm, creating a 790-800mm travel window. This allows precise end-position tuning at commissioning without swapping cylinders, though it functions as a stop and not a load lock.
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