Airtac SAIJ125 Adjustable Cylinder SAIJ125AX220-100S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX220-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 220mm 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
- Stroke220 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX220-100S
The AirTAC SAIJ125X220-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 120 to 220 mm, allowing you to dial back the nominal 220 mm stroke by up to 100 mm during commissioning. Equipped with a SUS420J2 stainless steel rod and a magnet for position sensing, it delivers 6136 N of push force at 0.5 MPa.
This model uses PT tapered ports and includes sensor grooves on both sides of the extruded aluminum barrel for flexible switch mounting. The rear adjuster acts strictly as a mechanical stop to set the retract end-position; it does not hold the load without live air pressure. For load-holding requirements without continuous air, consider the SAIL or BSAI series instead.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX220-100S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX220-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 220 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 SAIJ125AX220-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×220 | 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 SAIJ125AX220-100S Is Used
Variable End-Stop Setup
Dial in the exact retract position within the 120-220 mm window during machine commissioning without adding external physical stops.
Product Changeover
Quickly adapt the stroke length on a packaging line when handling different carton sizes, utilizing the full 100 mm adjustment range.
High-Force Positioning
Leverage the 6136 N push force at 0.5 MPa to move heavy assemblies into a precise end position tuned via the rear screw.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX220-100S the Right Cylinder?
Choose this 125 mm bore if your application requires substantial force, stepping up from the 80 mm bore which yields 2513 N at 0.5 MPa. The wide 100 mm adjustment range is ideal for product-size changeovers on a packaging line, allowing variable end-stops without swapping the cylinder. It operates at speeds of 30-500 mm/s.
To match this ISO 15552 interchangeable cylinder, specify a 125 mm bore, 220 mm stroke, 100 mm adjustment, PT ports, and the -S magnet option for CMSE or DMSE sensors. Since the stroke is 220 mm, ensure external guiding is used to manage side loads on the long unsupported travel. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
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 SAIJ125AX220-100S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 1251 kgf.
The rear adjuster screw lets you shorten the effective travel from the 220 mm nominal stroke down to 120 mm. This mechanical stop fine-tunes the end position but does not lock or hold the load without live air pressure.
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