Airtac SAIJ100 Adjustable Cylinder SAIJ100AX135-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100AX135-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 135mm 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
- Stroke135 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX135-20
The AirTAC SAIJ100X135-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the effective travel into a precise 115-135 mm window. It delivers a robust 5497 N of push force at 0.7 MPa, making it well-suited for heavy-duty positioning tasks. The piston rod utilizes SUS420J2 stainless steel (code A), offering enhanced corrosion resistance compared to standard carbon steel.
This model features PT tapered port threads and a G1/2 fluid connection. Instead of relying on external stops, the integrated rear screw mechanism allows you to fine-tune the retract end-position directly during commissioning or product changeovers. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept CMSE reed or DMSE electronic solid-state switches if position feedback is later required.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX135-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX135-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 135 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 SAIJ100AX135-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×135 | 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 SAIJ100AX135-20 Is Used
Product Changeover
Quickly dial in the 115-135 mm travel window during line changeovers to accommodate different package sizes without swapping the cylinder.
End-Position Tuning
Fine-tune the retract stroke at machine commissioning to perfect the seating force against a workpiece, avoiding the need for external stopper blocks.
Heavy-Duty Positioning
Leverage the 5497 N push force at 0.7 MPa to shift heavy fixtures or platens, using the adjustable stop to dial in the exact resting location.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX135-20 the Right Cylinder?
Select this 100 mm bore cylinder when your application demands 5497 N of thrust at 0.7 MPa and requires exact end-position tuning without swapping hardware. If your setup only needs 3518 N of push force, stepping down to the 80 mm bore saves space; conversely, moving up to the 125 mm bore yields 8590 N for heavier loads. The adjustable stroke is chosen over a fixed SAI cylinder when you need a variable end-stop to accommodate multiple product sizes on the same line.
For any stroke length of 135 mm, side-load is generally manageable, but for longer unsupported travels of 300 mm or more, an external guide is recommended to prevent rod binding. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure; if mechanical locking is required, consider the SAIL or BSAI series. This SAIJ model is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets.
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 SAIJ100AX135-20 FAQ
It features a rear adjusting screw that lets you shorten the nominal 135 mm stroke by up to 20 mm. This creates a usable travel window of 115-135 mm, allowing you to set the exact retract end-position during commissioning without adding external stops.
At an operating pressure of 0.7 MPa, the SAIJ100X135-20 provides a push force of 5497 N and a pull force of 3681 N. The maximum operating pressure is 1.0 MPa.
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