Airtac SAIJ40 Adjustable Cylinder SAIJ40BX35-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX35-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 35mm 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
- Stroke35 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX35-10
The AirTAC SAIJ40X35-10 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 25 to 35 mm, allowing you to dial back the 35 mm nominal stroke by up to 10 mm during commissioning without adding external stops. In this configuration, the 16 mm rod is made of SUS304 stainless steel, and the pneumatic supply connects via a PT tapered G1/4 port.
Operating at 0.5 MPa, this 40 mm bore generates 628 N of push thrust and 528 N of pull thrust. The extruded aluminum barrel includes sensor grooves on both sides for tracking position, though this specific unit ships without a magnet, meaning electronic DMSE or reed CMSE switches cannot detect the piston. Mounting is limited to the Basic, FA, LB, TC, FTC, TCM1, and TCM2 interface set, omitting the FB, CA, CB, and CR options.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX35-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX35-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 35 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 SAIJ40BX35-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×35 | 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 SAIJ40BX35-10 Is Used
Machine Setup Tuning
Dial in the exact end-of-stroke position within the 25-35 mm window during initial commissioning to perfect a pressing or clamping distance.
Product Changeover
Quickly adapt the travel end-stop on a packaging line when switching to a slightly different product size without changing the cylinder.
Short-Stroke Clamping
Utilize the 628 N push force at 0.5 MPa for precise clamping tasks where the 10 mm adjustment compensates for material thickness variations.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX35-10 the Right Cylinder?
Choose this 40 mm bore when your application requires the 628 N push force at 0.5 MPa, which sits neatly between the 402 N of a 32 mm bore and the 982 N of a 50 mm bore. The 10 mm adjustment range is ideal for fine-tuning a short end-position at machine setup or accommodating slight product size variations on a changeover line, rather than machining custom spacers or swapping to a fixed-stroke SAI cylinder.
For ISO 15552 replacement matching, ensure you specify the 35 mm nominal stroke, the 10 mm adjustment code, the PT G1/4 port thread, and the SUS304 (code B) rod material. Because this is a plain SAIJ without a lock, the rear adjuster and air cushions act only as travel stops and deceleration devices—they will not hold the load without live air pressure. For true load-holding, consider the SAIL or BSAI series. Since the stroke is well under 300 mm, side-load risks are minimal, but an external guide remains beneficial for heavy lateral 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 SAIJ40BX35-10 FAQ
At a 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At 0.9 MPa, the push force increases to 1130 N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 35 mm nominal stroke by up to 10 mm. This creates a usable travel window of 25 to 35 mm for fine-tuning the end position without replacing the cylinder.
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