Airtac SAIJ100 Adjustable Cylinder SAIJ100X650-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X650-40S 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 SAIJ100X650-40S
The AirTAC SAIJ100X650-40-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 610 to 650 mm usable travel window, allowing you to dial back the nominal 650 mm stroke by up to 40 mm during commissioning. Delivering 3927 N of push force at 0.5 MPa, it fits mid-to-heavy automation tasks perfectly.
This extruded aluminum profile cylinder includes a magnet for CMSE reed and DMSE electronic sensors. It uses a standard carbon steel rod with a PT tapered port thread. The rear stopper sets the retract end position, but remember it acts as a travel stop, not a load-holding lock.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X650-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X650-40S |
|---|---|
| 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 SAIJ100X650-40S
| 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 SAIJ100X650-40S Is Used
Product Changeover
Dial in the 610-650 mm travel window on packaging lines to accommodate different carton sizes without physically swapping out the actuator.
Commissioning Fine-Tune
Use the 40 mm rear adjuster to precisely set the retract end position during machine setup, avoiding the need to machine external stopper blocks.
Variable End Stops
Ideal for diverter gates on conveyors where the exact resting position of the 25 mm rod must be tweaked on the fly for different product flows.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X650-40S the Right Cylinder?
Choose this 100 mm bore when you need more thrust than a 63 mm cylinder (which provides 1559 N push at 0.5 MPa) but want to avoid the bulk of a 125 mm unit. The adjustable 610-650 mm window is ideal for product changeovers, letting you fine-tune the end position without swapping the cylinder or adding external stops. For fixed travel, a standard SAI cylinder works, but SAIJ excels in variable setups.
Because the 650 mm stroke is long, ensure you use an external guide to handle side loads, as even the 25 mm rod and M20x1.25 thread have limits under dynamic stress. If the machine loses air, this cylinder will not hold its load; for true locking, select a SAIL or BSAI model. It is dimensionally interchangeable per ISO 15552.
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 SAIJ100X650-40S FAQ
At 0.5 MPa it provides 3927 N of push force and 3681 N of pull force. If you need maximum thrust, it can deliver up to 7068 N push at 0.9 MPa.
The rear adjuster screw lets you shorten the effective travel from the 650 mm nominal stroke down to 610 mm. It acts as a mechanical stop for end-position tuning and is not a lock.
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