Airtac SAIJ40 Adjustable Cylinder SAIJ40BX195-40S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX195-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 195mm 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
- Stroke195 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX195-40S
The AirTAC SAIJ40X195-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 195 mm travel by up to 40 mm. This creates a precise 155-195 mm usable stroke window, allowing fine end-position tuning at commissioning without swapping the cylinder or bolting on external stops. It delivers 879 N of push force at 0.7 MPa.
This variant features a SUS304 stainless steel rod (code B) for superior corrosion resistance and uses PT tapered ports sized G1/4. The extruded aluminum barrel includes sensor grooves on both sides, and because this model includes a magnet (-S), it supports direct mounting of AirTAC CMSE reed or DMSE electronic solid-state switches. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX195-40S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX195-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 195 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 SAIJ40BX195-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×195 | 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 SAIJ40BX195-40S Is Used
Product Changeover
Dial in the 155-195 mm travel window during format size changes on a packaging line without replacing hardware.
Machine Setup
Fine-tune the retract end-position during commissioning to perfectly seat parts using the rear stopper screw.
Variable End Stops
Adjust the effective stroke on the fly for automated assemblies requiring multiple end-of-stroke positions.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX195-40S the Right Cylinder?
Choose this 40 mm bore when an application requires moderate thrust, such as 628 N push at 0.5 MPa, and step up to the 50 mm bore (982 N at 0.5 MPa) only if you need greater force margin. The adjustable stroke is ideal for machine setups requiring variable end-stops or product-size changeovers, whereas a fixed SAI cylinder is better for rigid, unchanging endpoints. To replace this cylinder, match the 40 mm bore, 195 mm stroke, 40 mm adjustment, PT G1/4 port, and the -S magnet. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2. For load-holding without live air, use a SAIL or BSAI cylinder instead of relying on the adjuster.
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 SAIJ40BX195-40S FAQ
At 0.7 MPa operating pressure, this 40 mm bore cylinder provides 879 N of push force and 738 N of pull force. At 0.5 MPa, the push force is 628 N.
The rear adjuster screw lets you shorten the 195 mm nominal stroke by up to 40 mm, providing a usable travel window of 155 to 195 mm. It functions as a mechanical stop and does not lock the load without air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ40 Adjustable Cylinder SAIJ40BX195-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.