Airtac SAIJ40 Adjustable Cylinder SAIJ40BX800-10
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX800-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 800mm 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
- Stroke800 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX800-10
The AirTAC SAIJ40X800-10 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 800 mm stroke that can be fine-tuned down by up to 10 mm, giving you a precise 790-800 mm usable travel window during commissioning. Delivering 628 N of push force at 0.5 MPa, it uses a G1/4 port and operates at speeds between 30-800 mm/s.
This variant is equipped with a SUS304 stainless steel rod for superior corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU omits the magnet, meaning CMSE or DMSE electronic switches cannot be used without modification. The rear adjuster acts purely as a travel stop to dial in the end position without adding external stops.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX800-10 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX800-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 800 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 SAIJ40BX800-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×800 | 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 SAIJ40BX800-10 Is Used
Machine Changeover
Dial in the 790-800 mm travel window during product size changes to set exact retract positions without machining new hard stops.
Material Handling
Sort or push items on a long-stroke line where the 10 mm rear adjustment compensates for minor mechanical drift over time.
Assembly Automation
Use the 628 N push force to actuate long-travel tooling, relying on the SUS304 rod for durability in mildly corrosive environments.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX800-10 the Right Cylinder?
Choose this 40 mm bore when you need more force than a 32 mm cylinder (which provides 402 N push at 0.5 MPa) but want to avoid the larger footprint of a 50 mm option (982 N). The adjustable stroke is ideal for machine setups requiring exact end-position tuning without swapping components. When replacing an ISO 15552 cylinder, match the 40 mm bore, 800 mm stroke, 10 mm adjustment, PT port, and standard mounting options (Basic, FA, LB, TC, FTC, TCM1, TCM2).
Because this cylinder features an 800 mm stroke, the 16 mm rod requires external guidance to prevent excessive side-loading and premature seal wear. Note that the rear adjuster and air cushions only decelerate the load; they do not hold position without live air. For load-holding without pressure, consider an external rod lock or a SAIL pneumatic lock cylinder.
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 SAIJ40BX800-10 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 0.7 MPa, the push force increases to 879 N.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke by up to 10 mm, creating a 790-800 mm travel window. It only sets the end position and does not lock the load without live air pressure.
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