Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-30S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 95mm 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
- Stroke95 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-30S
The AirTAC SAIJ40X95-30-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster that allows you to trim the effective travel back by up to 30 mm. This yields a usable stroke window of 65 to 95 mm, letting you dial in the exact retract position at commissioning without adding external stops. It delivers 628 N of push force and 528 N of pull force at 0.5 MPa, making it well-suited for medium-duty handling tasks.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for position sensing with CMSE reed or DMSE electronic switches. It uses a PT tapered G1/4 port, provides 30 mm of variable air cushioning at both ends, and operates at speeds of 30 to 800 mm/s. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-30S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 95 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 SAIJ40BX95-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×95 | 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 SAIJ40BX95-30S Is Used
Changeover Tuning
Quickly adjust the retract stop from 95 mm down to 65 mm during product size changeovers on a packaging line without swapping out the entire cylinder.
Sensor Positioning
Leverage the dual sensor grooves and built-in magnet to precisely detect the adjusted end-of-stroke position using CMSE or DMSE switches.
Corrosive Handling
Utilize the SUS304 stainless steel rod in light manufacturing environments where moisture or minor chemical exposure is a concern.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-30S the Right Cylinder?
Select this 40 mm bore adjustable cylinder when your assembly requires precise end-position tuning during setup or product changeover, rather than relying on a fixed-stroke SAI unit. If your application demands higher thrust, stepping up to a 50 mm bore increases the 0.5 MPa push force to 982 N. Conversely, a 32 mm bore drops the push force to 402 N for lighter loads. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding without pressure, consider an external rod lock or a SAIL cylinder.
As a dimensionally interchangeable ISO 15552 cylinder, this model replaces equivalent profile units by matching the 40 mm bore, 95 mm stroke, 30 mm adjustment range, PT G1/4 port, and -S magnet. It supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets. The 16 mm rod and M12x1.25 thread offer good side-load capacity, though any long unsupported stroke still requires an external guide.
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 SAIJ40BX95-30S FAQ
At an operating pressure of 0.5 MPa, this 40 mm bore cylinder provides a push force of 628 N and a pull force of 528 N. At 0.7 MPa, the push force increases to 879 N.
The rear adjuster screw acts as a mechanical stop that shortens the retract stroke by up to 30 mm. This gives the 95 mm nominal stroke a usable travel window of 65 to 95 mm, allowing fine-tuning of the end position during commissioning without replacing the cylinder.
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