Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-20S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 130mm 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
- Stroke130 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-20S
The AirTAC SAIJ40X130-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that lets you dial back the nominal 130 mm travel to a precise 110-130 mm window without adding external stops. It delivers 628 N of push force at 0.5 MPa and 879 N at 0.7 MPa, making it a solid mid-range choice for machine setup and product changeover tasks.
This SKU ships with a SUS304 stainless steel rod for corrosion resistance, a PT tapered port, and a magnet for CMSE or DMSE sensors. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-20S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 130 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 SAIJ40BX130-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×130 | 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 SAIJ40BX130-20S Is Used
Variable End-Stop Tuning
Dial in the exact retract position within the 110-130 mm window during commissioning to accommodate varying material thicknesses without swapping hardware.
Product Changeover Setup
Quickly adjust the effective stroke on a packaging line when switching between different carton sizes, using the rear screw to set the new end position.
Corrosive Assembly Press
Leverage the SUS304 stainless steel rod and 879 N of thrust at 0.7 MPa for light pressing and clamping tasks in environments requiring rust resistance.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-20S the Right Cylinder?
Choose this 40 mm bore when you need more force than the 32 mm version (402 N at 0.5 MPa) but want to avoid the larger 50 mm frame (982 N at 0.5 MPa). The adjustable stroke is ideal for commissioning fine-tune or variable end-stop applications where a fixed SAI cylinder would require shims or mechanical stops to achieve the exact end position.
Remember that the rear adjuster acts as a travel stop, not a lock; the cylinder cannot hold its load without live air. For load-holding without pressure, consider the SAIL or BSAI series. This model is dimensionally interchangeable per ISO 15552, featuring a G1/4 port, M12x1.25 rod thread, and 30 mm cushions at both ends.
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 SAIJ40BX130-20S 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 0.7 MPa, the push force increases to 879 N.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the 130 mm nominal stroke down to as little as 110 mm. It sets the end position but does not lock the load without live air pressure.
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