Airtac SAIJ125 Adjustable Cylinder SAIJ125X100-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X100-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 100mm 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
- Stroke100 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X100-10
The AirTAC SAIJ125X100-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the retract end position. With a 100mm nominal stroke and a 10mm adjustment range, it provides a usable travel window of 90-100mm for precise commissioning without external stops. It delivers a robust 6136N push force at 0.5MPa, making it suitable for heavy-duty positioning tasks.
This model features a carbon steel piston rod and PT tapered port threads. It includes variable air cushions at both ends to manage kinetic energy, but note that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure. The extruded aluminum barrel includes sensor grooves on both sides for adding position feedback.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X100-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X100-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 100 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 SAIJ125X100-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×100 | 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 SAIJ125X100-10 Is Used
Machine Setup & Changeover
Dial in the exact 90-100mm retract position during line changeovers without swapping cylinders or adding external stopper blocks.
Heavy-Duty Positioning
Leverage the 6136N push force at 0.5MPa to move heavy pallets or tooling into precise final positions on the assembly line.
Variable End-Stop Tuning
Use the 10mm rear adjustment screw to fine-tune the travel limit during commissioning, accommodating minor mechanical variations.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X100-10 the Right Cylinder?
Choose this 125mm bore cylinder when you need high thrust (6136N at 0.5MPa) and require exact end-position tuning at machine setup. If your application requires less force, stepping down to a 100mm bore yields 3927N at 0.5MPa. The adjustable stroke is ideal for product changeovers where the end-stop varies slightly, avoiding the need to swap out a fixed-stroke SAI cylinder.
When replacing an ISO 15552 cylinder, match the 125mm bore, 100mm stroke, 10mm adjustment, PT port thread, and standard carbon steel rod. This model operates without a magnet, so position sensing requires external stops or a different configuration. For load-holding without continuous air pressure, consider the SAIL or BSAI series instead, as the SAIJ adjuster is not a lock.
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 SAIJ125X100-10 FAQ
At 0.5MPa operating pressure, this 125mm bore cylinder provides a push force of 6136N and a pull force of 5734N. At 0.7MPa, the push force increases to 8590N.
The SAIJ125X100-10 has a 100mm nominal stroke with a 10mm rear adjuster, creating a usable travel window of 90-100mm. The adjustment screw acts as a mechanical stop to fine-tune the retract position, but it is not a lock and will not hold the load without live air pressure.
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