Airtac SAIJ100 Adjustable Cylinder SAIJ100BX65-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX65-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 65mm 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
- Stroke65 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX65-20
The AirTAC SAIJ100X65-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 45 to 65 mm, allowing you to dial back the nominal 65 mm stroke by up to 20 mm during commissioning. Equipped with a SUS304 stainless steel rod and PT tapered ports, it delivers a robust 3927 N push force at 0.5 MPa. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches.
Unlike a fixed-stroke SAI cylinder, this model lets you fine-tune the retract end position without swapping the unit or adding external stops. The rear adjuster acts as a travel stop to set deceleration, not a lock, so it will not hold the load without live air. For load-holding without pressure, consider an external rod lock or related types like SAIL or BSAI.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX65-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX65-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 65 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 SAIJ100BX65-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×65 | 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 SAIJ100BX65-20 Is Used
Product Changeover
Dial in the 45-65 mm travel window on packaging lines to accommodate varying product sizes without physically swapping the cylinder.
Machine Setup
Fine-tune the retract end position during initial commissioning to perfectly align tooling, avoiding the need for external stopper blocks.
Variable End Stops
Use the 20 mm adjustment range to adapt the stroke limit on automated assembly stations for different fixture heights.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX65-20 the Right Cylinder?
Choose this 100 mm bore when an 80 mm bore (2513 N push) is insufficient, or step down if a 63 mm bore (1559 N) is enough for your task. An adjustable stroke is ideal for variable end-stops or product changeovers, providing precise end-position tuning at setup. For ISO 15552 interchangeability, match the 100 mm bore, 65 mm stroke, 20 mm adjustment, PT ports, and SUS304 rod material. Note that the SAIJ mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
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 SAIJ100BX65-20 FAQ
At 0.5 MPa operating pressure, the 100 mm bore provides 3927 N of push force and 3681 N of pull force. At 0.9 MPa, the push force reaches 7068 N.
The rear adjuster screw lets you shorten the 65 mm nominal stroke by up to 20 mm, creating a usable travel window of 45 to 65 mm. It acts as a travel stop for end-position tuning and does not lock the load without live air pressure.
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Standard models usually ship in 3-4 days.
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