Airtac SAIJ40 Adjustable Cylinder SAIJ40BX180-30
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX180-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 180mm 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
- Stroke180 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX180-30
The AirTAC SAIJ40X180-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 30 mm. This creates a usable 150-180 mm stroke window, letting you dial in the exact end position during commissioning without swapping hardware. It delivers 628 N of push force and 528 N of pull force at 0.5 MPa.
This unit uses a SUS304 stainless steel rod for superior corrosion resistance and features PT tapered port threads with a G1/4 connection. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is added later. The rear adjuster acts purely as a travel stop to set deceleration, not as a lock to hold the load without live air.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX180-30 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX180-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 180 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 SAIJ40BX180-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×180 | 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 SAIJ40BX180-30 Is Used
Machine Commissioning
Fine-tune the 150-180 mm travel window during setup to hit exact positioning without machining new spacer blocks.
Product Changeover
Quickly adjust the retract end-stop on a packaging line when switching to a different package size.
Variable End Stops
Dial in the precise end-of-stroke position for delicate pressing tasks where a fixed cylinder would impact too hard.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX180-30 the Right Cylinder?
Choose this 40 mm bore when an application requires roughly 628 N of push force at 0.5 MPa, stepping up from a 32 mm bore (402 N) if you need extra thrust, or down from a 50 mm bore (982 N) to save space. An adjustable stroke is ideal for product changeovers on a line, allowing variable end-stops without adding external stops. For fixed travel, a standard SAI cylinder is simpler, but the SAIJ shines when final dimensions need fine-tuning.
To match this ISO 15552 dimensionally interchangeable cylinder, confirm a 40 mm bore, 180 mm nominal stroke, 30 mm adjustment range, PT port threads, and your required mounting style from the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, or TCM2. Since the stroke is 180 mm, side-load is minimal, but always ensure the load is guided to protect the 16 mm rod thread from bending forces.
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 SAIJ40BX180-30 FAQ
The rear adjuster screw lets you shorten the nominal 180 mm stroke by up to 30 mm, providing a usable travel window of 150 to 180 mm. It acts as a mechanical stop to set the end position and does not lock the load without continuous air pressure.
At 0.5 MPa operating pressure, the SAIJ40X180-30 provides 628 N of push force and 528 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 128 kgf of thrust.
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 SAIJ40BX180-30
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.