Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-75S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-75S 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 SAIJ40BX130-75S
The AirTAC SAIJ40X130-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 130 mm travel to a precise usable window of 55-130 mm. Delivering 628 N of push force at 0.5 MPa, it is built with a SUS304 stainless steel rod (option B) for superior corrosion resistance and features a magnetic piston for position sensing.
This model utilizes PT tapered port threads (G1/4) and operates at speeds from 30-800 mm/s. The rear adjuster functions purely as a mechanical stop to decelerate the load and set the end position; it does not hold the load without live air pressure. For applications requiring true load-holding, consider the SAIL or BSAI series instead.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-75S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-75S |
|---|---|
| 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 SAIJ40BX130-75S
| 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 SAIJ40BX130-75S Is Used
Product Changeover
Quickly modify the effective stroke from 55 to 130 mm to accommodate different package sizes on a packaging line without changing the cylinder.
Machine Setup
Fine-tune the retract end-position during commissioning to dial in exact stopping points without adding external stopper blocks.
Variable End Stops
Adjust the travel distance on the fly for automated assembly processes that require testing components at multiple extension lengths.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX130-75S the Right Cylinder?
Selecting this 40 mm bore cylinder makes sense when your machine setup requires variable end-stops or frequent product-size changeovers, avoiding the need to physically swap out a fixed-stroke SAI cylinder. If your application demands less thrust, stepping down to a 32 mm bore yields 402 N of push force at 0.5 MPa, while stepping up to a 50 mm bore provides 982 N.
Because this specific SKU features a 130 mm stroke, the 16 mm rod diameter and M12x1.25 rod thread handle moderate side loads, though long unsupported strokes still require an external guide. To ensure exact ISO 15552 dimensional interchangeability, match the 40 mm bore, 130 mm stroke, 75 mm adjustment, PT G1/4 ports, Basic/LB/TC mounting options, and the -S magnet for CMSE/DMSE sensor compatibility.
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 SAIJ40BX130-75S FAQ
At an operating pressure of 0.5 MPa, this 40 mm bore cylinder generates 628 N of push force and 528 N of pull force. It can reach up to 1130 N of push force at 0.9 MPa.
The rear adjuster acts as a mechanical stop that allows you to shorten the effective stroke from the nominal 130 mm down to a minimum of 55 mm. It decelerates the travel end but does not lock or hold the load without continuous air pressure.
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