Airtac SAIJ125 Adjustable Cylinder SAIJ125AX800-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX800-10S 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 SAIJ125AX800-10S
The AirTAC SAIJ125X800-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 6136N of push force at 0.5 MPa, stepping up to 8590N at 0.7 MPa, making it suited for heavy-duty positioning tasks. The integrated -S magnet supports position sensing via CMSE reed and DMSE electronic solid-state switches.
With an 800 mm nominal stroke and a 10 mm adjustment range, you get a usable travel window of 790-800 mm. This built-in rear stopper allows fine end-position tuning at commissioning without adding external physical stops. The rod is constructed from SUS420J2 stainless steel for superior corrosion resistance, and the extruded aluminum barrel features sensor grooves on three sides for flexible switch mounting.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX800-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX800-10S |
|---|---|
| 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 SAIJ125AX800-10S
| 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 SAIJ125AX800-10S Is Used
Heavy-Duty Positioning
Provides 8590N of thrust at 0.7 MPa for moving substantial jigs or fixtures, with a 10 mm end-stop window for dialing in exact final positions.
Machine Changeovers
Enables rapid product-size adjustments on a line by tuning the retract stroke back up to 10 mm without disassembling the cylinder mount.
Long-Stroke Alignment
Ideal for 800 mm travel assemblies where a 32 mm SUS420J2 stainless steel rod needs precise end-tuning and external guiding to manage side loads.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX800-10S the Right Cylinder?
Choose this adjustable model when your machine setup requires precise variable end-stops or product-size changeovers, avoiding the need to physically swap out a fixed-stroke SAI cylinder. If your application requires less force, stepping down to a 100 mm bore yields 3927N at 0.5 MPa; conversely, moving up to a 160 mm bore provides 10053N. Because the stroke is 800 mm, an external guide is strongly recommended to prevent excessive side-loading on the 32 mm rod.
For ISO 15552 replacement matching, specify a 125 mm bore, 800 mm stroke, 10 mm adjustment range, PT tapered port threads, and the -S magnet option. The rear adjuster acts strictly as a travel stop and cannot hold a load without live air pressure—if dead-drop prevention is required, consider an external rod lock, a pilot-operated check valve, or the AirTAC SAIL and BSAI locking cylinder series.
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 SAIJ125AX800-10S FAQ
At 0.5 MPa it provides 6136N of push force and 5734N of pull force. At 0.7 MPa, the push force increases to 8590N. The maximum operating pressure is 1.0 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from 800 mm down to 790 mm. It allows fine-tuning at commissioning but does not lock the load without continuous air pressure.
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