Airtac SAIJ125 Adjustable Cylinder SAIJ125AX1000-100
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX1000-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 1000mm 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
- Stroke1000 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX1000-100
The AirTAC SAIJ125X1000-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 900-1000 mm usable travel window. Equipped with a SUS420J2 stainless steel rod and PT tapered ports, it delivers 6136 N of pull force at 0.5 MPa. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This model allows operators to fine-tune the retract end-position at commissioning without swapping components. The rear screw acts as a travel stop to decelerate the load, but it does not hold the load without live air. For position holding without pressure, consider the SAIL or BSAI series.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX1000-100 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX1000-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 1000 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 SAIJ125AX1000-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×1000 | 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 SAIJ125AX1000-100 Is Used
Variable End Stops
Dial in the exact retract position within the 900-1000 mm window during machine commissioning to accommodate varying product lengths.
Line Changeover
Quickly adjust the stroke stop for different product sizes on a packaging line without physically replacing the cylinder.
Heavy Assembly Setup
Fine-tune the approach distance on large fixturing, using the 125 mm bore's 6136 N pull force to securely move heavy loads.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX1000-100 the Right Cylinder?
Choose this adjustable cylinder when an application requires precise end-stop tuning during machine setup or product changeover, avoiding the need for external stops. If you need less force, the 100 mm bore provides 3681 N pull at 0.5 MPa. For higher force, the 160 mm bore offers 9425 N.
Because the stroke is 1000 mm, the long unsupported piston rod requires an external guide to prevent excessive side-load wear. This SAIJ unit uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. It 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 SAIJ125AX1000-100 FAQ
At 0.5 MPa, this 125 mm bore cylinder provides 6136 N of pull force and 8590 N of push force. The maximum thrust is 1251 kgf at 1.0 MPa.
The rear adjuster screw lets you shorten the nominal 1000 mm stroke by up to 100 mm, creating a 900-1000 mm travel window. This stop fine-tunes the end position but does not lock the load without live air.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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