Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-20 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 SAIJ100BX650-20
The AirTAC SAIJ100X650-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 650 mm travel by up to 20 mm for a usable 630-650 mm window. It delivers a robust 3927 N push force at 0.5 MPa and features a SUS304 stainless steel rod for superior corrosion resistance. The integrated PT tapered G1/2 port ensures a tight, reliable pneumatic connection.
This adjustable model uses the standard SAI extruded aluminum barrel with sensor grooves on both sides, but its mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options. The rear adjuster acts purely as a travel stop to decelerate the end position, so it cannot hold the load without live air pressure—use SAIL or BSAI cylinders for true locking requirements.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-20 |
|---|---|
| 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 SAIJ100BX650-20
| 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 SAIJ100BX650-20 Is Used
Machine Changeover
Dial in the exact 630-650 mm end-stop during product size transitions on a packaging line without replacing the cylinder.
Variable End-Stop Positioning
Fine-tune the retract distance on a long-stroke conveyor sorting arm to accommodate varying package dimensions.
Commissioning Calibration
Trim the travel back by up to 20 mm during initial machine setup to perfectly align tooling without external spacers.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-20 the Right Cylinder?
Select this 100 mm bore when an 80 mm bore (delivering 2513 N push at 0.5 MPa) is insufficient, but you want to avoid stepping up to a 125 mm cylinder. The 20 mm adjustment range is chosen when you need to fine-tune the retract end position during commissioning or product changeover without swapping out the entire cylinder or adding external physical stops. To match this ISO 15552 replacement exactly, specify: 100 mm bore, 650 mm stroke, 20 mm adjustment, PT G1/2 port, no magnet, and the appropriate mounting bracket from the reduced SAIJ set.
Because the 650 mm stroke is substantial, the 25 mm rod and M20x1.5 thread provide rigidity, but long unsupported travel still requires an external guide to prevent excessive side-loading and premature seal wear.
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 SAIJ100BX650-20 FAQ
At a 0.5 MPa operating pressure, this 100 mm bore cylinder generates a push force of 3927 N and a pull force of 3681 N. At 0.7 MPa, the push force increases to 5497 N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the nominal 650 mm down to 630 mm. It sets the deceleration end-point but does not lock or hold the load without continuous air pressure.
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