Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-30
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 55mm 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
- Stroke55 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-30
The AirTAC SAIJ100X55-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 25 to 55 mm, allowing you to dial back the nominal 55 mm stroke by up to 30 mm during commissioning. In the 100 mm bore class, it delivers a robust 7068 N of push force at 0.9 MPa, making it well suited for heavy pressing and positioning tasks.
This model features a 25 mm carbon steel rod with an M20x1.5 thread, providing high rigidity against side loads. The extruded aluminum barrel includes sensor grooves on both sides, and pneumatic cushioning at both ends handles end-of-stroke deceleration. The rear adjuster acts purely as a mechanical stop to set the end position and does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-30 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 55 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 SAIJ100X55-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×55 | 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 SAIJ100X55-30 Is Used
Press Fit Tuning
Dial in the exact 25 to 55 mm insertion depth for bearing or bushing press fits during initial machine commissioning without machining custom spacers.
Changeover Stops
Quickly adjust the retract end-position to accommodate new product sizes on a packaging line, using the 30 mm adjustment window to adapt the stroke on the fly.
Heavy Load Positioning
Leverage the 7068 N push force at 0.9 MPa to shift heavy pallets or fixtures into a precise end location, relying on the rear stop for repeatable positioning.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-30 the Right Cylinder?
When configuring a machine changeover system, choose this adjustable SAIJ over a fixed SAI if you need to fine-tune the retract end-position without adding external stops or swapping cylinders. If your application requires less force, stepping down to an 80 mm bore yields 4523 N of push force at 0.9 MPa. For load-holding without continuous air pressure, this cylinder is not a lock; you would need to specify a SAIL or BSAI series instead.
To match this ISO 15552 cylinder as a replacement, confirm the 100 mm bore, 55 mm stroke, 30 mm adjustment range, PT tapered port thread, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because this is a non-magnetized model, it does not support position sensing; adding the -S option enables CMSE reed and DMSE electronic switches.
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 SAIJ100X55-30 FAQ
At an operating pressure of 0.9 MPa, this 100 mm bore double-acting cylinder generates a push force of 7068 N and a pull force of 3681 N. The maximum thrust is 801 kgf at 1.0 MPa.
The rear adjuster screw acts as a mechanical stop that lets you trim the effective travel back from the 55 mm nominal stroke down to 25 mm. It sets the retract end-position but does not lock or hold the load without continuous air pressure.
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