Airtac SAIJ40 Adjustable Cylinder SAIJ40BX115-10S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX115-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 115mm 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
- Stroke115 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX115-10S
The AirTAC SAIJ40X115-10-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 628N of push force and 528N of pull force at 0.5 MPa, utilizing a 16mm piston rod. The built-in rear stopper allows you to trim the effective travel, providing a usable stroke window of 105-115mm for exact end-position tuning during commissioning.
This configuration features a SUS304 stainless steel rod (option B) for superior corrosion resistance and includes a magnet (-S) for position sensing. It is fully compatible with AirTAC CMSE reed and DMSE electronic solid-state switches mounted into the dual-side sensor grooves of the extruded aluminum barrel. The PT tapered port threads ensure a tight, reliable pneumatic connection.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX115-10S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX115-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 115 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 SAIJ40BX115-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×115 | 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 SAIJ40BX115-10S Is Used
Machine Changeover
Dial in the 105-115mm retract position precisely when switching between product sizes, eliminating the need to physically swap cylinders or re-engineer fixed stops.
Clamping Position Setup
Achieve exact clamping depth on delicate components by trimming the stroke up to 10mm during commissioning, preventing over-travel and part damage.
Sensor-Driven Handling
Leverage the integrated -S magnet with CMSE or DMSE switches to confirm end-of-stroke positions in automated handling rigs while fine-tuning the physical travel endpoint.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX115-10S the Right Cylinder?
Choose this 40mm bore when an application requires more force than a 32mm cylinder (which provides 402N push at 0.5 MPa) but lacks the space or need for a 50mm unit (982N push). The 10mm adjustment range is ideal for fine-tuning retract positions on the fly without adding external stops or swapping out a fixed-stroke SAI cylinder. Remember that the rear adjuster functions strictly as a travel stop, not a locking device; the cylinder cannot hold a load without live air pressure. For load-holding requirements, consider an external rod lock or explore the SAIL or BSAI series.
When replacing an ISO 15552 cylinder, verify the 40mm bore, 115mm stroke, 10mm adjustment requirement, PT G1/4 port, and the required -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. At 115mm, the stroke is well within standard limits, but always ensure adequate guidance for your specific load dynamics.
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 SAIJ40BX115-10S FAQ
At 0.5 MPa operating pressure, this 40mm bore cylinder generates 628N of push force and 528N of pull force. At 0.7 MPa, the push force increases to 879N.
The rear adjuster acts as a mechanical stop that allows you to shorten the nominal 115mm stroke by up to 10mm, creating a usable travel window of 105-115mm. It only sets the end position and does not lock the load without air pressure.
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