Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-100
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 100mm 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
- Stroke100 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-100
The AirTAC SAIJ40X100-100 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to trim the nominal 100 mm travel back by up to 100 mm. This creates a highly versatile 0-100 mm usable travel window, perfect for dialing in exact end positions during commissioning without swapping hardware. It delivers 628 N of push force at 0.5 MPa and uses a PT tapered port thread.
This model features a SUS304 stainless steel piston rod for superior corrosion resistance, making it suitable for environments where standard carbon steel rods would degrade. The extruded aluminum barrel includes sensor grooves on both sides, and the cylinder supports adjustable air cushions at both ends to decelerate moving loads smoothly.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-100 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 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 SAIJ40BX100-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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 SAIJ40BX100-100 Is Used
Variable End-Stop Tuning
Dial in the exact retract position from 0 to 100 mm during machine commissioning to accommodate different product sizes without changing the cylinder.
Product Changeover
Quickly adjust the effective stroke on packaging lines when switching between package formats, reducing downtime and avoiding external spacer hardware.
Corrosive Assembly Lines
Leverage the SUS304 stainless steel rod in washdown or chemical exposure areas to maintain reliable actuation while fine-tuning travel limits.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-100 the Right Cylinder?
Choose this 40 mm bore when you need precise variable end-stops on a 100 mm stroke, as it saves the effort of bolting on external stops or machining custom spacers. If your application requires less force, stepping down to a 32 mm bore yields 402 N at 0.5 MPa. For heavier payloads, moving up to a 50 mm bore provides 982 N. Note that the rear adjuster acts purely as a travel stop and does not hold the load without live air; for fail-safe load holding, consider the SAIL or BSAI series.
When replacing an ISO 15552 cylinder, match the 40 mm bore, 100 mm stroke, PT port thread, and the SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Since this model lacks a magnet (-S), it cannot host reed or electronic sensors; if position feedback is needed, select an -S variant for CMSE or DMSE switch compatibility.
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 SAIJ40BX100-100 FAQ
It features a rear adjusting screw that lets you shorten the 100 mm nominal stroke by up to 100 mm, providing a 0-100 mm usable travel window. The adjuster functions as a mechanical stop to set the end position and is not a lock.
At 0.5 MPa, it provides 628 N of push force and 528 N of pull force. At the maximum operating pressure of 1.0 MPa, the push force reaches 1130 N.
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