Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 900mm 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
- Stroke900 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-20
The AirTAC SAIJ100X900-20 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 900 mm nominal stroke that can be fine-tuned backward by up to 20 mm, yielding an effective 880 to 900 mm travel window. Built with a carbon steel rod and a 25 mm diameter, it delivers 7068 N of push force at 0.9 MPa.
This extruded aluminum barrel design includes sensor grooves on both sides for CMSE reed or DMSE electronic switches. The rear adjuster acts purely as a mechanical stop for end-position tuning during commissioning; it does not hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 900 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 SAIJ100X900-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×900 | 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 SAIJ100X900-20 Is Used
Variable End-Stop Tuning
Dial in the exact 880 to 900 mm end position during machine commissioning without swapping out the entire cylinder or adding external mechanical stops.
Product Changeover
Quickly adjust the stroke length on packaging or conveying lines to accommodate different package sizes and formats on the fly.
Heavy-Duty Positioning
Leverage the 7068 N push force at 0.9 MPa to move heavy pallets or fixtures, using the rear screw to fine-tune the final resting position.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-20 the Right Cylinder?
Choose this 100 mm bore when your application requires substantial thrust, stepping up from an 80 mm bore that provides 4523 N push force at 0.9 MPa. The adjustable 880 to 900 mm travel window is ideal for machine setups requiring variable end-stops or product changeovers, preventing the need to swap cylinders or bolt on external stops. It uses a PT tapered G1/2 port and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
Because the 900 mm stroke is long and unsupported, an external guide is recommended to manage side loads and prevent rod binding. When replacing an ISO 15552 cylinder, match the 100 mm bore, 900 mm stroke, 20 mm adjustment, PT port thread, and mounting hardware. Note that a plain SAIJ does not lock position pneumatically; use an external rod lock for fail-safe holding.
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 SAIJ100X900-20 FAQ
At an operating pressure of 0.9 MPa, this 100 mm bore cylinder generates 7068 N of push force and 3681 N of pull force. It can deliver a maximum of 801 kgf at 1.0 MPa.
The rear adjuster screw allows you to shorten the effective travel from the 900 mm nominal stroke down to 880 mm. This provides a 20 mm tuning window for precise end-position setup without altering the cylinder mount.
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