Airtac SAIJ125 Adjustable Cylinder SAIJ125X800-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X800-10S 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 SAIJ125X800-10S
The AirTAC SAIJ125X800-10-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 790-800 mm usable travel window, allowing you to dial back the 800 mm nominal stroke by up to 10 mm during commissioning without adding external stops. It delivers 6136 N of push force and 5734 N of pull force at 0.5 MPa.
This unit includes a standard carbon steel rod and PT tapered port threads. The -S magnet option enables position detection via CMSE reed or DMSE electronic solid-state sensors housed in the dual-side barrel grooves. The rear adjuster acts strictly as a travel stop for end-position tuning, not a load-holding lock.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X800-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X800-10S |
|---|---|
| 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 SAIJ125X800-10S
| 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 SAIJ125X800-10S Is Used
Machine Changeover
Dial in the exact 790-800 mm end position during product-size changeovers without physically remounting the actuator.
Variable End Stops
Fine-tune the retract stop on long-stroke material handling gates to adapt to varying pallet dimensions on the fly.
Commissioning Tuning
Trim the final 10 mm of travel during initial setup to perfectly time machine sequencing and avoid mechanical hard stops.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X800-10S the Right Cylinder?
Choose this 125 mm bore when 80 mm falls short on thrust (2513 N push at 0.5 MPa) but you want to avoid the larger 160 mm footprint. The 10 mm adjustable window is ideal for fine-tuning machine changeovers or product-size transitions without swapping the cylinder. For load-holding without live air pressure, use an external rod lock or pilot-operated check valve, or select the BSAI clamp-lock series.
When matching ISO 15552 dimensions, verify your bore, 800 mm stroke, 10 mm adjustment, PT G1/2 ports, and the -S magnet. Because the 800 mm stroke is long, ensure adequate external guiding to prevent excessive side-load wear on the 32 mm rod and M27x2 thread. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ125X800-10S FAQ
At 0.5 MPa, it provides 6136 N of push force and 5734 N of pull force. It can reach a maximum push force of 11045 N at 0.9 MPa.
A rear screw stopper lets you shorten the effective travel from 800 mm down to 790 mm, creating a 790-800 mm adjustable window. It acts as a travel stop, not a lock, so it cannot hold the load without live air.
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