Airtac SAIJ40 Adjustable Cylinder SAIJ40BX105-30S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX105-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 105mm 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
- Stroke105 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX105-30S
The AirTAC SAIJ40X105-30-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 628N push force at 0.5 MPa and utilizes a 16mm carbon steel rod with an M12x1.25 thread. The built-in rear stopper allows you to trim the effective stroke, creating a 75-105mm usable travel window for precise end-position tuning during commissioning without adding external stops.
This model includes a SUS304 stainless steel rod (option B) for superior corrosion resistance and a magnet for position sensing. It is compatible with AirTAC CMSE reed and DMSE electronic sensors fitted into the dual-side sensor grooves. The adjuster acts strictly as a travel stop for deceleration, not a load lock; for load-holding without live air, consider the SAIL or BSAI series.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX105-30S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX105-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 105 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 SAIJ40BX105-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×105 | 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 SAIJ40BX105-30S Is Used
Machine Changeover
Dial in the 75-105mm retract position during product size changes without physically swapping the cylinder or adding external mechanical stops.
Sensor Setup
Leverage the integrated magnet with DMSE electronic sensors in the side groove to confirm exact end-of-stroke positions after adjustment.
Corrosive Environments
Utilize the SUS304 stainless steel rod option for manufacturing areas exposed to moisture or mild chemicals while maintaining 628N force.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX105-30S the Right Cylinder?
Choose this 40mm bore when you need 628N of push force at 0.5 MPa, stepping up from a 32mm bore that provides 402N. The adjustable 75-105mm travel window is ideal for product changeovers on a line, allowing you to fine-tune the retract position on the fly rather than swapping to a fixed-stroke SAI cylinder. It features PT tapered ports and a SUS304 stainless steel rod.
For ISO 15552 replacement matching, verify the 40mm bore, 105mm stroke, 30mm adjustment, PT port thread, and the -S magnet option. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the stroke is 105mm, side-load is minimal, but always ensure the M12x1.25 rod thread is properly aligned to prevent binding.
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 SAIJ40BX105-30S FAQ
At 0.5 MPa operating pressure, this 40mm bore cylinder provides a push force of 628N and a pull force of 528N. It can reach up to 1130N push force at 0.9 MPa.
The rear adjusting screw acts as a mechanical stopper, allowing you to shorten the 105mm nominal stroke by up to 30mm. This creates a 75-105mm usable travel window for fine-tuning end positions at commissioning. It is not a lock and requires live air to hold the load.
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