Airtac SAIJ40 Adjustable Cylinder SAIJ40BX145-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX145-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 145mm 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
- Stroke145 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX145-10
The AirTAC SAIJ40X145-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel window down to 135-145 mm without adding external stops. Delivering 628 N of push force at 0.5 MPa, it is built with a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads.
The integrated adjustment screw acts purely as a mechanical stop to set the retract end position during commissioning or product changeovers. It does not lock or hold the load without live air pressure; for true load-holding, consider the SAIL or BSAI series. This model features a 16 mm rod with an M12x1.25 thread and supports a subset of ISO mountings including Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX145-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX145-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 145 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 SAIJ40BX145-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×145 | 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 SAIJ40BX145-10 Is Used
Machine Setup Commissioning
Dial in the exact 135-145 mm travel window during initial machine build to perfect end-of-stroke positioning without swapping hardware.
Product Size Changeover
Quickly adjust the retract stop by up to 10 mm on packaging lines when running a slightly shorter product profile.
Variable End-Stop Positioning
Use the rear stopper screw to fine-tune the final resting position of tooling where a hard, repeatable mechanical stop is preferred over sensor limits.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX145-10 the Right Cylinder?
Choose this 40 mm bore when you need precise retract-end tuning that a fixed-stroke SAI cylinder cannot provide. If your application requires less force, stepping down to a 32 mm bore yields 402 N of push force at 0.5 MPa, while stepping up to a 50 mm bore provides 982 N. Because this is a 145 mm stroke, it falls under the standard maximum of 1200 mm and operates efficiently at speeds of 30-800 mm/s.
When replacing an ISO 15552 cylinder, match the 40 mm bore, 145 mm stroke, 10 mm adjustment range, PT port threads, and the specific mounting subset. Note that the 16 mm rod and M12x1.25 thread handle side loads well, but long unsupported strokes always require an external guide to prevent premature wear.
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 SAIJ40BX145-10 FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers 128 kgf.
The rear adjustment screw lets you shorten the nominal 145 mm stroke by up to 10 mm, creating a usable travel window of 135-145 mm. The adjuster functions only as a travel stop and does not hold the load without live air pressure.
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