Airtac SAIJ100 Adjustable Cylinder SAIJ100AX115-75
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX115-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 115mm 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.
- BoreØ100 mm
- Stroke115 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX115-75
The AirTAC SAIJ100X115-75 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 115 mm travel by up to 75 mm. This creates a wide usable stroke window of 40 to 115 mm, perfect for dialing in exact end positions during machine commissioning or product changeovers without swapping hardware. It delivers a robust 3927 N push force at 0.5 MPa, scaling up to 7068 N at 0.9 MPa.
Built with a SUS420J2 stainless steel rod and PT tapered ports, this extruded aluminum profile cylinder utilizes a 25 mm rod and M20x1.5 thread to handle high side loads. The rear adjuster acts purely as a mechanical stop to set the travel end, complementing the standard variable air cushions at both ends, but it does not lock or hold the load without continuous live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX115-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX115-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 115 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 36 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100AX115-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×115 | 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 SAIJ100 Adjustable Cylinder SAIJ100AX115-75 Is Used
Product Changeover
Rapidly adapt retract distances on packaging lines running varied container sizes by dialing the stroke back from 115 mm down to 40 mm without changing cylinders.
Prototype Setup
Fine-tune the end-of-stroke position during machine commissioning to find the exact clamping or pressing distance, avoiding the need for machined spacer blocks.
Adjustable Ejector
Control the ejection length of parts from a press, using the 75 mm adjustment window to accommodate different part depths while maintaining 3927 N of push force.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX115-75 the Right Cylinder?
Choose this 100 mm bore when a 63 mm bore is insufficient, stepping up from the 63 mm's 1559 N push force at 0.5 MPa to this model's 3927 N. The generous 75 mm adjustment range is ideal for prototyping cells or lines running mixed product sizes, letting you shift the retract end-stop on the fly instead of installing fixed external stops or reverting to a standard SAI cylinder. Because the stroke is 115 mm, external guiding is less critical than on longer strokes, but the 25 mm rod still provides excellent rigidity.
For an exact ISO 15552 replacement match, specify the 100 mm bore, 115 mm nominal stroke, 75 mm adjustment, PT ports, and your required mounting style. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Note that the SAIJ series omits FB, CA, CB, and CR mounts. If your application requires true load-holding without live air, consider the SAIL (air-released lock) or BSAI (clamp-lock) variants instead of relying on the adjuster.
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 SAIJ100 Adjustable Cylinder SAIJ100AX115-75 FAQ
The rear adjuster acts as a mechanical stop that lets you trim the effective travel down from the 115 mm nominal stroke by up to 75 mm. This provides a usable stroke window of 40 to 115 mm for fine-tuning the end position at commissioning.
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At 0.9 MPa, the push force increases to 7068 N.
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