Airtac SAIJ40 Adjustable Cylinder SAIJ40BX155-75
The AirTAC SAIJ40 Adjustable Cylinder SAIJ40BX155-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 155mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ40 mm
- Stroke155 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX155-75
The AirTAC SAIJ40X155-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 155 mm stroke that can be dialed back by up to 75 mm, yielding a usable travel window of 80 to 155 mm.
This adjustable model allows you to fine-tune the retract end position during commissioning without swapping hardware or adding external stops. It features PT tapered port threads (G1/4), variable air cushions at both ends to decelerate the load, and sensor grooves on both sides of the extruded aluminum barrel. Note that the rear adjuster acts strictly as a travel stop, not a lock, so it will not hold a load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX155-75 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX155-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 155 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 | 528 N | 528 N |
| 0.7 MPa | 739 N | — |
| Max (@1.0 MPa) | 108 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40BX155-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×155 | 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 SAIJ40BX155-75 Is Used
Machine Changeover
Dial in the 80 to 155 mm travel window during product size changes without physically replacing the cylinder or repositioning hard stops.
End-Position Tuning
Fine-tune the retract stroke precisely at commissioning to perfect seating or clamping depth using the rear adjustment screw.
Variable Diverter Stroke
Adjust the actuation length on the fly for a conveyor sorting arm handling different package sizes on the same line.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX155-75 the Right Cylinder?
Choose this 40 mm bore cylinder when an application demands a highly flexible end-stop within an 80 to 155 mm travel window. If you need less adjustment range or a fixed 155 mm stroke, the standard AirTAC SAI cylinder is a simpler choice.
To match this exact configuration for an ISO 15552 replacement, specify a 40 mm bore, 155 mm stroke, 75 mm adjustment, PT port threads, and the SUS304 (B) rod material. Because this unit lacks a magnet, it cannot host CMSE or DMSE sensors unless you select the -S option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. For any load-holding requirements without live air, consider an external rod lock or the AirTAC SAIL series instead.
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 SAIJ40BX155-75 FAQ
At 0.7 MPa, the push force increases to 879 N.
The rear adjuster acts as a mechanical stop that trims the effective stroke. For this 155 mm nominal stroke cylinder, you can reduce the travel by up to 75 mm, creating a usable window of 80 to 155 mm.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ40 Adjustable Cylinder SAIJ40BX155-75
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.