Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-75S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-75S 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 SAIJ40BX95-75S
The AirTAC SAIJ40X95-75-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. Equipped with a SUS304 stainless steel rod and a piston magnet, it provides a broad usable travel window from 20 to 95 mm, letting you dial back the nominal 95 mm stroke by up to 75 mm during machine setup.
Delivering 628 N of push force at 0.5 MPa, this bore 40 unit uses a PT G1/4 port and operates at speeds of 30-800 mm/s. The rear adjuster acts purely as a travel stop for end-position tuning and does not hold the load without live air pressure. For position holding, an external SAIL lock or pilot-operated check valve is required.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-75S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-75S |
|---|---|
| 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 SAIJ40BX95-75S
| 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 SAIJ40BX95-75S Is Used
Product Changeovers
Quickly fine-tune the 20-95 mm travel window during line changeovers to accommodate different packaging sizes without adding external stops.
Machine Commissioning
Dial in the exact end position at startup using the rear adjuster, avoiding the need to physically swap out a fixed-stroke SAI cylinder.
Variable End Stops
Ideal for assembly stations requiring flexible retraction points, leveraging the 628 N push force to handle varying component placement depths.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-75S the Right Cylinder?
Choose this adjustable-stroke model when an application requires frequent end-position tuning or product-size changeovers without swapping the entire cylinder. If your setup needs less force, stepping down to a bore 32 cylinder yields 402 N at 0.5 MPa; stepping up to a bore 50 cylinder provides 982 N for heavier loads. Because the stroke is under 300 mm, external side-load guides are less critical, though the robust 16 mm SUS304 rod handles standard loads well.
When specifying an ISO 15552 replacement, match the 40 mm bore, 95 mm stroke, 75 mm adjustment range, PT G1/4 port, and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options. The integrated magnet supports AirTAC CMSE reed and DMSE electronic solid-state sensors.
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 SAIJ40BX95-75S FAQ
At an operating pressure of 0.5 MPa, this bore 40 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 allows you to shorten the effective travel from the nominal 95 mm down to as little as 20 mm. It functions as a mechanical stop for end-position tuning and requires live air to maintain pressure, as it is not a locking device.
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