Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-30
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-30 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 SAIJ100X70-30
The AirTAC SAIJ100X70-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 3927N push force at 0.5MPa and uses a G1/2 port with a 25mm carbon steel rod. The integrated rear stopper allows you to fine-tune the effective travel down from a 70mm nominal stroke to a 40mm minimum, creating a 40-70mm usable window without adding external stops.
This adjustable range is ideal for product changeovers and machine commissioning. The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed or DMSE electronic switches, though this specific SKU is configured without a magnet. The adjuster acts purely as a travel stop and does not lock the load without live air; for position holding, consider a SAIL or BSAI variant.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-30 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-30 |
|---|---|
| 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 SAIJ100X70-30
| 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 SAIJ100X70-30 Is Used
Machine Commissioning
Dial in the exact end-of-stroke position during setup using the 40-70mm adjustable window, avoiding physical cylinder swaps.
Product Changeover
Quickly adapt the stroke for different product sizes on a packaging line by turning the rear stopper screw.
Variable End Stops
Set precise retract distances for tooling heads where a fixed 70mm stroke would bottom out too aggressively.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X70-30 the Right Cylinder?
Choose this 100mm bore when a 63mm cylinder (offering 1559N push at 0.5MPa) is too weak, but a 125mm bore is unnecessary. The 30mm adjustment range is selected when a process requires frequent end-position tweaking across a 40-70mm window, rather than the fixed travel of a standard SAI cylinder. Mounting options include the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, CR).
For a true ISO 15552 replacement, match the 100mm bore, 70mm stroke, 30mm adjust, G1/2 PT port, and required mounting hardware. Because the nominal stroke is under 300mm, side-load concerns are minimal, but the 25mm rod and M20x1.5 thread handle robust mechanical loads. Remember that the rear adjuster only decelerates the travel end; it does not hold the load pneumatically.
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 SAIJ100X70-30 FAQ
At 0.5MPa operating pressure, this 100mm bore cylinder provides a push force of 3927N and a pull force of 3681N. At 0.7MPa, the push force increases to 5497N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 70mm nominal stroke by up to 30mm, giving a usable travel window of 40-70mm. It only sets the end position and does not lock the load without live air.
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