Airtac SAIJ40 Adjustable Cylinder SAIJ40BX220-100S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX220-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 220mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ40 mm
- Stroke220 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX220-100S
The AirTAC SAIJ40X220-100-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 100 mm. This creates a highly flexible usable window of 120-220 mm, letting you fine-tune the end position at commissioning without swapping the cylinder or adding external stops. It delivers a 0.5 MPa push force of 628 N and a pull force of 528 N.
Built with a SUS304 stainless steel rod (code B), this model is ideal for environments where corrosion resistance is required. It includes a magnet (-S) for position sensing, working seamlessly with AirTAC CMSE reed and DMSE electronic switches housed in the dual-side sensor grooves. The mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX220-100S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX220-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 220 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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, 30 mm |
| Max stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40BX220-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×220 | 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 SAIJ40 Adjustable Cylinder SAIJ40BX220-100S Is Used
Machine Changeover
Dial in the exact 120-220 mm travel window during product size changeovers without physically replacing the cylinder or reworking the machine frame.
End-Position Tuning
Use the 100 mm rear stopper screw to precisely set the retract end-position during commissioning, absorbing mechanical tolerances seamlessly.
Corrosive Environments
The SUS304 stainless steel rod and adjustable stroke make this cylinder ideal for testing equipment or packaging lines requiring both travel flexibility and rust prevention.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX220-100S the Right Cylinder?
Choose this adjustable-stroke model over a fixed SAI when your application requires variable end-stops or frequent machine changeovers. If you need higher force, stepping up to a 50 mm bore yields 982 N push at 0.5 MPa; if your load is lighter, a 32 mm bore provides 402 N. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air—use SAIL or BSAI for locking needs. For an exact ISO 15552 replacement, match the 40 mm bore, 220 mm stroke, 100 mm adjustment, PT tapered port, and -S magnet. The 16 mm rod and M12x1.25 thread handle moderate side loads, but at 220 mm stroke, an external guide is recommended for heavy off-center loads.
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 SAIJ40 Adjustable Cylinder SAIJ40BX220-100S FAQ
At 0.5 MPa, the SAIJ40X220-100-S provides a push force of 628 N and a pull force of 528 N. At 0.7 MPa, the push force increases to 879 N.
The rear adjuster acts as a mechanical stop that lets you shorten the nominal 220 mm stroke by up to 100 mm, providing a usable travel window of 120 to 220 mm. It is a travel stop, not a lock, and cannot hold the load without live air pressure.
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