Airtac SAIJ100 Adjustable Cylinder SAIJ100BX210-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX210-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 210mm 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
- Stroke210 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX210-50
The AirTAC SAIJ100X210-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 210 mm travel to create a precise 160-210 mm usable window. It delivers robust thrust, providing 5497 N of push force at 0.7 MPa, making it well-suited for heavy-end positioning tasks.
This model features a SUS304 stainless steel rod (option B) for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for drop-in CMSE reed or DMSE electronic switches. The rear adjustment screw acts purely as a travel stop to fine-tune the end position, meaning it will not hold the load if air pressure drops.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX210-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX210-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 210 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 SAIJ100BX210-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×210 | 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 SAIJ100BX210-50 Is Used
Machine Changeover
Dial in the 160-210 mm travel window during product size transitions without swapping out the entire cylinder body.
End-Stop Tuning
Use the rear adjuster to fine-tune the final contact position of heavy tooling at commissioning, avoiding hard mechanical shocks.
Heavy Payload Handling
Leverage the 5497 N push force at 0.7 MPa to move substantial masses while setting the exact retract distance for varied process steps.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX210-50 the Right Cylinder?
Choose this 100 mm bore when the 80 mm variant's 3518 N push at 0.7 MPa is insufficient for your tooling payload, but a 125 mm cylinder (8590 N) would be excessive. The 50 mm adjustment range is ideal for product changeovers where the exact end-of-stroke contact point varies, eliminating the need to physically swap cylinders or bolt on external stops.
For a direct ISO 15552 interchangeable replacement, match the 100 mm bore, 210 mm stroke, 50 mm adjuster, PT port threads, and SUS304 rod material. Note that SAIJ uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR. Because the 210 mm stroke exceeds 300 mm? No, but as a general rule for long unsupported strokes, external guidance is recommended to prevent rod side-load damage.
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 SAIJ100BX210-50 FAQ
At an operating pressure of 0.7 MPa, this 100 mm bore cylinder provides 5497 N of push force and 3681 N of pull force. It can deliver up to 7068 N push at 0.9 MPa.
The rear adjusting screw lets you shorten the effective stroke from the 210 mm nominal down to 160 mm, giving a 50 mm tuning window. It functions as a mechanical stop and does not lock or hold the load without continuous live air pressure.
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