Airtac SAIJ40 Adjustable Cylinder SAIJ40BX160-40S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX160-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 160mm 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
- Stroke160 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX160-40S
The AirTAC SAIJ40X160-40-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 120-160 mm usable travel window by allowing you to trim up to 40 mm from the 160 mm nominal stroke, enabling precise end-position tuning during commissioning without adding external stops. Delivering 628 N of pull force at 0.5 MPa, it bridges the gap between smaller 32 mm bores and 50 mm options.
This variant features a SUS304 stainless steel rod for corrosion resistance and includes a magnet for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel carries sensor grooves on both sides, and the mounting set covers Basic, FA, LB, TC, FTC, TCM1, and TCM2 interfaces.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX160-40S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX160-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 160 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 SAIJ40BX160-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×160 | 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 SAIJ40BX160-40S Is Used
Machine Changeover
Dial in the exact end position within the 120-160 mm window during product size changes on a packaging line without swapping out the entire cylinder.
Variable End-Stops
Set precise retract distances for assembly presses that need to accommodate different part heights or stack lengths on the fly.
Commissioning Fine-Tune
Trim up to 40 mm of travel during initial setup to perfect the tooling clearance, avoiding the need to machine custom external spacers.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX160-40S the Right Cylinder?
Choose this 40 mm bore when your application requires around 628 N pull force at 0.5 MPa, stepping up from the 402 N pull of a 32 mm bore if you need extra thrust without moving to a larger 50 mm unit. An adjustable stroke is ideal for machine setups requiring variable end-stops or frequent product changeovers, replacing fixed-stroke SAI cylinders when exact positions must be dialed in on-site. The PT tapered port and -S magnet ensure straightforward sensor integration.
Remember that the rear adjuster functions strictly as a travel stop, not a lock; it cannot hold a load without live air pressure. For position-holding requirements without continuous air supply, consider an external rod lock or related types like the SAIL or BSAI. Since the 160 mm stroke is below the 300 mm side-load threshold, standard mounting is sufficient, though long unsupported loads should still use a guide.
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 SAIJ40BX160-40S FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. It can deliver up to 1130 N of push force at 0.9 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke from the 160 mm nominal length down to as little as 120 mm. This creates a 120-160 mm adjustable travel window for fine-tuning the retract end position at commissioning.
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