Airtac SAIJ100 Adjustable Cylinder SAIJ100BX800-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX800-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 800mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke800 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX800-40S
The AirTAC SAIJ100X800-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust push force of 3927 N at 0.5 MPa and features a SUS304 stainless steel rod (option B) for superior corrosion resistance. By turning the external stopper screw, you can trim the nominal 800 mm travel back by up to 40 mm, creating a precise 760-800 mm usable stroke window for exact end-position tuning.
This model includes a magnetic piston (-S) for position sensing with AirTAC CMSE reed or DMSE electronic switches. It uses a PT tapered G1/2 port and relies on adjustable air cushions at both ends to decelerate heavy loads. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure; for dead-air load holding, consider an external rod lock or the SAIL/BSAI series.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX800-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX800-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 800 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max stroke | Up to 1500 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100BX800-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | 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 SAIJ100 Adjustable Cylinder SAIJ100BX800-40S Is Used
Variable End-Stop Machining
Dial in the 760-800 mm travel window on the fly to accommodate different part lengths without physically relocating the cylinder or repositioning external hard stops.
Product Changeover Pusher
Quickly adjust the retraction end-point during packaging line size changeovers, using the 40 mm trim range to push varying box sizes onto a sorting belt.
Heavy-Duty Assembly Station
Leverage the 3927 N push force at 0.5 MPa to seat large components, using the rear screw to fine-tune the final pressing position within the 800 mm stroke.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX800-40S the Right Cylinder?
Choose this 100 mm bore when your application requires substantial thrust—stepping down to an 80 mm bore drops the 0.5 MPa push force to 2513 N, while this model provides 3927 N. An adjustable stroke is highly beneficial here because it allows you to fine-tune the 760-800 mm travel window during commissioning or product changeover without adding external stopper blocks or swapping the cylinder.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 800 mm stroke, 40 mm adjustment range, PT G1/2 port, and the -S magnet requirement. Because the stroke is 800 mm, the M20x1.5 rod is highly susceptible to side-loading and deflection; always pair this unit with an external guide rail to prevent cylinder binding. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
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 SAIJ100 Adjustable Cylinder SAIJ100BX800-40S FAQ
At a 0.5 MPa operating pressure, this 100 mm bore cylinder provides a push force of 3927 N and a pull force of 3681 N. At the maximum 1.0 MPa pressure, it can deliver up to 801 kgf of push force.
The rear adjuster screw acts as an external stopper that lets you shorten the effective stroke by up to 40 mm. This creates a usable travel window of 760 to 800 mm, allowing precise end-position tuning at commissioning without replacing the cylinder.
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