Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-50 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 SAIJ100X55-50
The AirTAC SAIJ100X55-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 3927N of push force at 0.5MPa and features a 25mm carbon steel rod with an M20x1.5 thread. The integrated rear stopper allows you to dial back the nominal 55mm stroke, providing a usable travel window of 5 to 55mm for precise end-position tuning without adding external stops.
This extruded aluminum profile cylinder includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches, though a magnet is not included in this configuration. It utilizes a PT tapered port thread and operates at speeds between 30 and 800mm/s. The adjustable rear screw acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-50 |
|---|---|
| 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 SAIJ100X55-50
| 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 SAIJ100X55-50 Is Used
End-Position Tuning
Dial in the exact retract distance between 5 and 55mm during machine commissioning to perfect the pickup point without machining new hard stops.
Product Changeover
Quickly adjust the stroke rearward by up to 50mm to accommodate a slightly shorter product variant running on the same conveyor line.
High-Force Clamping
Leverage the 3927N push force at 0.5MPa to secure heavy workpieces, using the adjustable stop to vary the clamping depth precisely.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X55-50 the Right Cylinder?
Choose this 100mm bore cylinder when an application requires substantial thrust—such as the 3927N push force at 0.5MPa—combined with variable end-stop positioning. If you need less force, stepping down to an 80mm bore yields 2513N of push force at 0.5MPa, whereas moving up to a 125mm bore provides 6136N. The SAIJ100X55-50 is selected over a fixed-stroke SAI cylinder when commissioning requires fine-tuning the retract position or accommodating slight product size changes on the line.
For a direct ISO 15552 replacement match, ensure you specify the 100mm bore, 55mm stroke, 50mm adjustment range, PT port thread, and no magnet. The mounting hardware is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. Because the stroke is under 300mm, side-load concerns are minimal, but the load still requires live air to maintain position, as the adjuster is not a locking mechanism.
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 SAIJ100X55-50 FAQ
At a 0.5MPa operating pressure, this 100mm bore cylinder generates 3927N of push force and 3681N of pull force. At 0.7MPa, the push force increases to 5497N.
The rear adjuster screw lets you shorten the effective travel from the nominal 55mm down to as little as 5mm, creating a 5-55mm usable window. It functions as a mechanical stop to set the end position and does not lock the load without continuous air pressure.
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