Airtac SAIJ100 Adjustable Cylinder SAIJ100X650-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X650-20S 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 SAIJ100X650-20S
The AirTAC SAIJ100X650-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 630 to 650 mm usable travel window, allowing you to dial in the exact retract position without swapping hardware. The 100 mm bore delivers substantial thrust, pushing 7068 N at 0.9 MPa, making it well-suited for heavy-duty positioning tasks.
This model includes a standard carbon steel rod and a magnet for CMSE and DMSE sensors. The extruded aluminum barrel features sensor grooves on both sides for flexible switch mounting. Remember that the rear adjuster acts only as a travel stop; it does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X650-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X650-20S |
|---|---|
| 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 SAIJ100X650-20S
| 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 SAIJ100X650-20S Is Used
Heavy Press Tuning
Dial in the exact 630 to 650 mm end position for large metal stamping or press operations during initial setup and tooling changes.
Pallet Stop Adjustment
Fine-tune the retract stop distance on heavy-load conveyor lines to accommodate different pallet sizes without changing the actuator.
Machine Changeover
Quickly adjust the stroke window on automated assembly lines when switching between product variants, saving retooling downtime.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X650-20S the Right Cylinder?
Choose this 100 mm bore when your application requires forces between 5497 N at 0.7 MPa and 7068 N at 0.9 MPa. If your push requirements fall below 3927 N at 0.9 MPa, stepping down to an 80 mm bore optimizes space and air consumption. Conversely, if you need more than 7068 N, a 125 mm bore is the next logical upgrade.
The 20 mm adjustment range is ideal for fine-tuning end positions during machine commissioning or product changeovers, eliminating the need to bolt on external stops. Because this cylinder features a 650 mm stroke, the 25 mm rod requires an external guide to prevent excessive side-loading and premature seal wear. For applications needing true load-holding without live air, consider the SAIL or BSAI series instead of relying on the 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 SAIJ100X650-20S FAQ
At 0.9 MPa operating pressure, this 100 mm bore cylinder provides a push force of 7068 N and a pull force of 3681 N. At 0.5 MPa, it delivers 3927 N push and 3681 N pull.
The rear adjuster allows you to shorten the 650 mm nominal stroke by up to 20 mm, creating a 630 to 650 mm travel window. It functions as a mechanical stop for end-position tuning and is not a lock.
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