Airtac SAIJ100 Adjustable Cylinder SAIJ100X40-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X40-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 40mm 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
- Stroke40 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X40-20
The AirTAC SAIJ100X40-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 3927N of push force at 0.5MPa and features a 25mm carbon steel rod with an M20x1.5 thread. The integrated adjuster allows you to dial back the nominal 40mm stroke by up to 20mm, creating a flexible 20-40mm usable travel window for precise end-position tuning.
Because the adjuster acts purely as a mechanical stop, it does not hold the load without live air pressure. For position holding, consider SAIL or BSAI variants. This model uses a PT G1/2 port, includes adjustable air cushions at both ends, and supports CMSE and DMSE sensors only if a magnet is specified. The SAIJ mounting set omits FB, CA, CB, and CR brackets, offering Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X40-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X40-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 40 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 SAIJ100X40-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×40 | 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 SAIJ100X40-20 Is Used
Machine Setup Tuning
Dial in the exact 20-40mm end-stop position during initial commissioning to perfect a pressing operation without machining new spacers.
Product Changeover
Quickly adapt the travel window on a packaging line when switching to a slightly shorter product, saving changeover minutes.
Variable End Stops
Use the rear mechanical screw to set a hard, repeatable physical stop for precise positioning of heavy 3927N loads.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X40-20 the Right Cylinder?
Selecting this 100mm bore over the 80mm bore yields a significant force jump, pushing from 2513N to 3927N at 0.5MPa. Stepping down to an 80mm bore saves space but sacrifices thrust. The adjustable stroke is chosen when you need to fine-tune the end stop during commissioning or product changeover without physically swapping cylinders or adding external stops. Unlike a fixed SAI cylinder, the SAIJ lets you trim the retract position by up to 20mm on the fly. When matching ISO 15552 replacements, verify the 100mm bore, 40mm stroke, 20mm adjustment, PT G1/2 port, and required mounting bracket.
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 SAIJ100X40-20 FAQ
At 0.5MPa it provides 3927N of push force and 3681N of pull force. At 0.7MPa the push force increases to 5497N.
The rear adjuster screw lets you shorten the effective travel by up to 20mm, providing a usable stroke window between 20mm and 40mm. It acts only as a travel stop and does not lock the load.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAIJ100 Adjustable Cylinder SAIJ100X40-20
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.