Airtac SAIJ100 Adjustable Cylinder SAIJ100X800-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X800-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 800mm 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
- Stroke800 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X800-20S
The AirTAC SAIJ100X800-20-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 780-800 mm usable travel window, allowing you to dial back the 800 mm nominal stroke by up to 20 mm during commissioning without adding external stops. Delivering 7068 N of push force at 0.9 MPa, it is built for heavy-duty positioning tasks.
This model includes a magnet for CMSE reed and DMSE electronic sensors, which seat neatly into the dual-side extruded barrel grooves. The robust 25 mm carbon steel rod and M20x1.5 thread handle high side loads well, while the PT tapered G1/2 port ensures a tight pneumatic seal. The rear adjuster acts purely as a travel stop, so an external guide is recommended for this 800 mm stroke to prevent rod deflection.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X800-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X800-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 800 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 SAIJ100X800-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×800 | 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 SAIJ100X800-20S Is Used
Machine Changeover Tuning
Dial in the exact 780-800 mm end position during product size transitions without physically swapping the cylinder or adding shims.
Variable End-Stop Positioning
Trim the retract stroke by up to 20 mm to synchronize pusher plates with varying package lengths on a heavy-duty conveyor line.
Heavy-Duty Assembly Press
Leverage 7068 N of push force at 0.9 MPa to seat large components, using the rear stopper to fine-tune the final pressing depth.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X800-20S the Right Cylinder?
Choose this 100 mm bore when a 63 mm bore (2182 N push at 0.5 MPa) is too weak for your clamping or lifting demands. The adjustable 780-800 mm travel window is ideal for machine setups requiring fine end-position tuning on product changeover, avoiding the need to swap out a fixed-stroke SAI cylinder. Because the rear adjuster only trims the travel end and does not hold the load without live air, you must use a SAIL air-released lock, a BSAI clamp-lock, or an external rod lock for fail-safe load holding.
To match this ISO 15552 interchangeable cylinder for a replacement, specify: 100 mm bore, 800 mm stroke, 20 mm adjustment range, PT G1/2 port, and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. For any stroke of 300 mm or more, always use an external guide rail to support the load and mitigate side-load wear on the rod seals.
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 SAIJ100X800-20S FAQ
At 0.9 MPa it provides 7068 N of push force and 3681 N of pull force. At a lower 0.5 MPa, it yields 3927 N push and 3681 N pull.
The rear adjuster screw lets you shorten the effective travel from 800 mm down to 780 mm. This stopper only sets the end position; it does not lock the load, so live air is required to maintain position.
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