Airtac SAIJ40 Adjustable Cylinder SAIJ40BX60-20S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX60-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 60mm 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
- Stroke60 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX60-20S
The AirTAC SAIJ40X60-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 628N push force at 0.5 MPa and uses a PT tapered G1/4 port. The built-in rear stopper allows you to dial back the 60mm nominal stroke by up to 20mm, creating a precise 40-60mm usable travel window for commissioning without adding external stops.
This specific SKU includes a SUS304 stainless steel rod for superior corrosion resistance and an integrated magnet for electronic DMSE or reed CMSE position sensing. It retains the standard extruded aluminum barrel with sensor grooves on both sides. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR variants found on some standard models.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX60-20S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX60-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 60 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 SAIJ40BX60-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×60 | 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 SAIJ40BX60-20S Is Used
Commissioning End-Position Tuning
Fine-tune the retract end-position within the 40-60mm window during initial machine setup without swapping the physical cylinder or bolting on external stops.
Product Line Changeover
Quickly adjust the effective stroke when switching product sizes on a conveyor or assembly line, using the rear screw to adapt the travel distance on the fly.
Corrosive Environment Actuation
Leverage the SUS304 stainless steel rod and 628N push force for precise clamping or positioning tasks in washdown or mildly corrosive manufacturing settings.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX60-20S the Right Cylinder?
Choose this 40mm bore when you need 628N of push force at 0.5 MPa, stepping up from a 32mm bore that provides 402N, or down from a 50mm bore yielding 982N. An adjustable stroke is ideal for machine setups requiring variable end-stops or fine end-position tuning during product changeover, rather than relying on a fixed-stroke SAI cylinder.
Remember that the rear adjuster acts only as a mechanical travel stop, not a lock; it cannot hold a load without live air pressure. For load-holding requirements, consider an external pilot-operated check valve or the related SAIL or BSAI series. This SAIJ40X60-20-S configuration ships with a SUS304 rod, PT ports, and a magnet for CMSE/DMSE switches.
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 SAIJ40BX60-20S FAQ
At a 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 adjusting screw acts as a mechanical stopper that lets you shorten the 60mm nominal stroke by up to 20mm, providing a usable travel window of 40 to 60mm. The adjuster only sets the travel end and does not lock the load without live air pressure.
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