Airtac SAIJ40 Adjustable Cylinder SAIJ40BX170-100S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX170-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 170mm 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
- Stroke170 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX170-100S
The AirTAC SAIJ40X170-100-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 70 to 170 mm. Delivering 628 N of push force and 528 N of pull force at 0.5 MPa, it is built with a SUS304 stainless steel rod and includes a magnet for position sensing.
This adjustable-stroke design allows you to fine-tune the retract end position at commissioning without swapping the cylinder or adding external stops. It features PT tapered ports (G1/4) and utilizes an extruded aluminum barrel with sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic solid-state switches.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX170-100S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX170-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 170 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 SAIJ40BX170-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×170 | 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 SAIJ40BX170-100S Is Used
Machine Changeover
Dial in the exact retract position within the 70-170 mm window when switching between product sizes on a packaging line.
End-Stop Tuning
Fine-tune the final end position during commissioning without machining new hard stops or replacing the entire actuator.
Variable Forming Stops
Adjust the depth of stroke on the fly for assembly presses that handle parts of varying heights.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX170-100S the Right Cylinder?
Choose this 40 mm bore when you need more thrust than a 32 mm bore (which provides 402 N push at 0.5 MPa) but want a more compact footprint than a 50 mm bore (982 N push). The generous 100 mm adjustment range is ideal for machines requiring variable end-stops during product changeovers. To match this ISO 15552 cylinder for a replacement, verify the 170 mm stroke, 100 mm adjustment, PT port thread, and the -S magnet option.
Because the nominal stroke is 170 mm, the 16 mm rod and M12x1.25 rod thread handle moderate side loads well, though longer unsupported strokes still require an external guide. Remember that the rear adjuster acts as a travel stop, not a lock; the SAIJ does not hold loads without live air, so consider an AirTAC SAIL or BSAI cylinder if load-holding is required.
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 SAIJ40BX170-100S FAQ
The rear adjuster screw acts as a mechanical stop that lets you trim the effective stroke back by up to 100 mm. This creates a usable travel window of 70 to 170 mm, allowing precise end-position tuning without changing the cylinder.
At 0.5 MPa operating pressure, it provides 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 879 N.
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