Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-50S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 600mm 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
- Stroke600 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-50S
The AirTAC SAIJ40X600-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 628N of push force and 528N of pull force at 0.5 MPa, utilizing a 16mm piston rod with an M12x1.25 thread. Because this specific SKU includes the -S option, it contains an integrated magnet for direct compatibility with AirTAC CMSE reed and DMSE electronic solid-state sensors.
This model provides a 550-600mm usable travel window, allowing you to trim the effective stroke by up to 50mm during commissioning without swapping the cylinder or adding external stops. It features a SUS304 stainless steel rod for superior corrosion resistance and is machined to accept PT tapered port threads with a G1/4 connection. The extruded aluminum barrel includes sensor grooves on both sides, and the rear adjuster functions strictly as a travel stop for end-position tuning, not as a load-holding lock.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-50S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 600 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 SAIJ40BX600-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×600 | 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 SAIJ40BX600-50S Is Used
Machine Changeover
Dial in the 550-600mm stroke window precisely during product size changes without physically replacing the actuator or adding shims.
Variable End Stops
Adjust the retract position on the fly for sorting or diverting operations that require flexible material positioning.
Corrosive Environments
Leverage the SUS304 stainless steel rod for reliable actuation in packaging or processing lines exposed to moisture.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX600-50S the Right Cylinder?
Choose this 40mm bore when an application requires moderate thrust, such as the 628N push force at 0.5 MPa, but stepping down to a 32mm bore (402N push) would be insufficient. The adjustable 50mm travel window is ideal for product changeovers or fine-tuning the end position on the fly. For load-holding without continuous live air pressure, this cylinder is not suitable; you should select a SAIL pneumatic lock or BSAI clamp-lock cylinder instead.
When replacing an ISO 15552 cylinder, match the 40mm bore, 600mm stroke, 50mm adjustment range, PT port thread, and -S magnet option. Mounting choices are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR brackets. Because the stroke is 600mm, the unsupported piston rod is susceptible to side-loading; always use an external guide rail to prevent binding and premature seal 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 SAIJ40BX600-50S FAQ
At 0.5 MPa operating pressure, this 40mm bore cylinder provides 628N of push force and 528N of pull force. At 0.7 MPa, the push force increases to 879N.
The rear adjuster acts as a mechanical stop, allowing you to shorten the 600mm nominal stroke by up to 50mm, creating a 550-600mm usable travel window. It only sets the end position and does not lock the load without live air.
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