Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 650mm 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
- Stroke650 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-50
The AirTAC SAIJ100X650-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 650 mm stroke that can be fine-tuned backward by up to 50 mm, yielding a practical 600-650 mm travel window. This allows operators to dial in exact end positions at commissioning without adding external stops. In the 100 mm bore class, it delivers substantial thrust, generating 7068 N of push force at 0.9 MPa operating pressure.
This specific configuration features a SUS304 stainless steel rod (code B) for enhanced corrosion resistance and includes a PT tapered port thread. The extruded aluminum barrel integrates sensor grooves on both sides for mounting CMSE reed or DMSE electronic switches. It uses variable air cushions at both ends to decelerate the load, but note that these cushions and the rear stopper do not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 650 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 SAIJ100BX650-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×650 | 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 SAIJ100BX650-50 Is Used
Machine Changeover
Dial in the 600-650 mm travel window instantly when switching product sizes on a packaging line, avoiding the need to physically swap out cylinders or bolt on new external stops.
End-Position Tuning
Fine-tune the retract stroke during initial commissioning to absorb mechanical tolerances and hit exact positioning targets without disassembling the fixture.
High-Force Forming
Leverage the 7068 N push force at 0.9 MPa for pressing or clamping operations where the exact bottoming position varies slightly per batch.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-50 the Right Cylinder?
Select this 100 mm bore adjustable cylinder when an application requires high force combined with variable end-stop positioning, such as 7068 N push force at 0.9 MPa. If your application needs less force, stepping down to an 80 mm bore yields 4523 N at 0.9 MPa, whereas moving up to a 125 mm bore provides 11045 N. Choose the SAIJ adjustable-stroke design over a fixed SAI model when you need on-the-fly end-position tuning during machine setup or product-size changeovers.
Because this SKU features a 650 mm stroke, the 25 mm rod must handle significant side-loading leverage; an external guide is recommended to prevent rod bending and premature seal wear. To replace an existing ISO 15552 cylinder, match the 100 mm bore, 650 mm nominal stroke, 50 mm adjustment range, PT port thread, and the required mounting style. SAIJ supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. For applications requiring the load to be held mechanically without live air, select an AirTAC SAIL or BSAI series instead of relying on the rear adjuster.
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 SAIJ100BX650-50 FAQ
The 100 mm bore generates a push force of 7068 N at 0.9 MPa and 3927 N at 0.5 MPa. The pull force at 0.5 MPa is 3681 N.
A rear screw stopper allows you to shorten the effective travel from the nominal 650 mm down to 600 mm. This creates a 600-650 mm usable window for fine-tuning the end position at commissioning without changing the cylinder.
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