Airtac SAIJ125 Adjustable Cylinder SAIJ125AX800-100
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX800-100 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 SAIJ125AX800-100
The AirTAC SAIJ125X800-100 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 6136N push force at 0.5 MPa. It features an extruded aluminum barrel with sensor grooves on both sides and a SUS420J2 stainless steel rod for superior corrosion resistance. With a 125mm bore and 800mm stroke, this model provides a usable travel window of 700-800mm, letting you dial back the extension by up to 100mm.
This adjustable design allows fine end-position tuning at commissioning without swapping the cylinder or bolting on external stops. The rear screw acts purely as a travel stop and works alongside variable air cushions at both ends to decelerate the load, but it does not hold the load without live air. Operating at speeds of 30-500mm/s, it utilizes PT tapered ports and supports mounting options including Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX800-100 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX800-100 |
|---|---|
| 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 SAIJ125AX800-100
| 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 SAIJ125AX800-100 Is Used
Product Size Changeover
Quickly adjust the 700-800mm travel window during production line changeovers to accommodate varying product lengths without replacing the actuator.
Machine Setup Tuning
Fine-tune the exact end-stop position during initial commissioning to achieve precise mechanical alignment without adding external spacers.
Heavy Material Handling
Leverage the 6136N push force to move heavy pallets or workpieces, relying on the built-in air cushions to decelerate the 800mm stroke smoothly.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX800-100 the Right Cylinder?
Choose this 125mm bore when you need substantial thrust, offering 6136N push and 5734N pull at 0.5 MPa. If your application requires less force, stepping down to a 100mm bore provides 3927N push force, whereas a 160mm bore offers 10053N for heavier loads. The adjustable stroke is ideal for product-size changeovers on a line, giving you a 700-800mm window to perfectly tune the end position without machining new hard stops.
Because this cylinder features an 800mm stroke, the 32mm diameter rod and M27x2 thread provide a sturdy interface, but long unsupported strokes still require an external guide to prevent excessive side-loading. For load-holding without live pressure, this plain SAIJ is insufficient as the adjuster is not a lock; you should explore SAIL or BSAI variants instead. To match this ISO 15552 dimensionally interchangeable cylinder, confirm the 125mm bore, 800mm stroke, 100mm adjustment, PT G1/2 port, and mounting hardware.
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 SAIJ125AX800-100 FAQ
At an operating pressure of 0.5 MPa, this 125mm bore cylinder generates a push force of 6136N and a pull force of 5734N. At 0.7 MPa, the push force increases to 8590N.
The rear adjuster screw allows you to shorten the nominal 800mm stroke by up to 100mm, providing an effective travel window of 700-800mm. The adjuster acts as a mechanical stop to set the end position and does not function as a lock to hold the load without 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 SAIJ125AX800-100
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.