Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 70mm 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
- Stroke70 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-40
The AirTAC SAIJ100X70-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 70 mm stroke that can be dialed back by up to 40 mm, giving you a precise 30-70 mm usable travel window for fine-tuning end positions during commissioning. Belonging to the 100 mm bore class, it delivers 3927 N of push force and 3681 N of pull force at 0.5 MPa, making it suitable for heavy-duty positioning tasks.
This extruded aluminum profile cylinder includes variable air cushions at both ends and a robust 25 mm carbon steel rod with an M20x1.5 thread. The rear adjustment screw functions purely as a mechanical stop to set the retract distance without requiring external stops, but it does not lock the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 70 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 SAIJ100X70-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×70 | 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 SAIJ100X70-40 Is Used
Machine Changeover
Dial in the exact 30-70 mm retract stop during product size changes on a packaging line without adding external mechanical stops.
Commissioning Tuning
Fine-tune the final end-of-stroke position during initial machine setup to absorb mechanical tolerances and ensure precise seating.
Heavy Positioning
Leverage the 3927 N push force at 0.5 MPa to move heavy jigs or fixtures, using the rear screw to set the exact resting distance.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-40 the Right Cylinder?
Choose this 100 mm bore adjustable model when your application requires exact end-position tuning within a 30-70 mm window without swapping out the entire cylinder. If your force requirements are lower, stepping down to an 80 mm bore yields 2513 N of push force at 0.5 MPa. Because this unit lacks a magnet (-S), it cannot host position-sensing CMSE or DMSE switches. When ordering an ISO 15552 replacement, confirm the 70 mm stroke, 40 mm adjustment range, PT tapered port threads, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, 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 SAIJ100 Adjustable Cylinder SAIJ100X70-40 FAQ
The rear adjuster acts as a mechanical stop that trims the effective travel. For this model, the 70 mm nominal stroke can be reduced by up to 40 mm, resulting in a usable travel window of 30-70 mm.
At 0.5 MPa operating pressure, it provides 3927 N of push force and 3681 N of pull force. At 0.7 MPa, the push force increases to 5497 N.
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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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