Airtac SAIJ100 Adjustable Cylinder SAIJ100BX20-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX20-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 20mm 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
- Stroke20 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX20-20
The AirTAC SAIJ100X20-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. With a nominal 20 mm stroke and a 20 mm adjustment range, the effective travel window can be dialed back from 20 mm down to a fully retracted 0 mm. This allows precise end-position tuning at commissioning without adding external stops. It delivers 3927 N of push force at 0.5 MPa and features a G1/2 port.
This SKU is configured with a SUS304 stainless steel rod (code B) for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of CMSE reed or DMSE electronic sensors, though no magnet is included on this specific unit. The mounting interface utilizes a reduced set of ISO 15552 attachments: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX20-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX20-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 20 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 SAIJ100BX20-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×20 | 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 SAIJ100BX20-20 Is Used
Short-Stroke Clamping
Dial in the exact clamping depth from 0 to 20 mm during machine setup to accommodate varying material thicknesses without swapping hardware.
End-Position Tuning
Fine-tune the retract stop during commissioning to perfectly align tooling, using the rear adjuster instead of adding external shims.
Product Changeover
Rapidly adapt the travel limit on automated lines for different product sizes by turning the rear adjustment screw on the fly.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX20-20 the Right Cylinder?
Choose this 100 mm bore cylinder when your application requires substantial force—3927 N push at 0.5 MPa—and variable end-stop positioning within a short 0-20 mm travel window. If your process requires less force, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa. The rear adjuster acts solely as a mechanical stop to set the retract position; it is not a lock. For load-holding without live air pressure, select a SAIL (air-released lock) or BSAI (clamp-lock) cylinder instead.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 20 mm stroke, 20 mm adjustment, PT port threads, and the specific mounting accessory. Because the stroke is under 300 mm, side-load stress on the 25 mm rod is minimal, though long unsupported loads should still use an external guide.
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 SAIJ100BX20-20 FAQ
At a 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At 0.7 MPa, the push force increases to 5497 N.
The SAIJ100X20-20 has a nominal 20 mm stroke with a 20 mm adjustment range, allowing the effective travel to be reduced from 20 mm down to 0 mm. The rear screw acts as a mechanical stop to fine-tune the end position without live air holding the load.
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