Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-20
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100BX55-20 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ100 mm
- Stroke55 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-20
It features a SUS304 stainless steel rod and PT tapered ports. By turning the rear screw, you can trim the effective travel, creating a precise 35-55mm usable window for your application without needing external stops.
This adjustable-stroke design is invaluable during commissioning or product changeovers, allowing you to dial in the exact end position on the fly. The rear adjuster functions strictly as a travel stop to set the deceleration point alongside the standard air cushions, not as a locking mechanism. For load-holding without live air pressure, you would need to integrate a SAIL or BSAI variant instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-20 |
|---|---|
| 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-20
| 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 SAIJ100BX55-20 Is Used
End-Position Tuning
Dial in the exact 35 to 55mm travel distance during machine setup to perfect the pressing or clamping depth without swapping hardware.
Product Changeover
Quickly adjust the rear stopper to accommodate slightly different product sizes on the same line, minimizing downtime between runs.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX55-20 the Right Cylinder?
Because the stroke is only 55mm, side-loading is less of a concern than on longer strokes, but the robust 25mm rod still handles moderate lateral stress well.
When replacing an ISO 15552 cylinder, match the 100mm bore, 55mm nominal stroke, 20mm adjustment range, PT port threads, and your required mounting style. SAIJ supports a specific subset of mounts: Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR options. Note that this specific SKU lacks a magnet, so it cannot host CMSE or DMSE sensors without a configuration change.
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 SAIJ100BX55-20 FAQ
At the maximum 1.0 MPa pressure, it can deliver up to 801 kgf.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 55mm nominal stroke by up to 20mm. This creates a usable travel window of 35-55mm, which can be fine-tuned during commissioning without changing the cylinder.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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