Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-30
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-30 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 SAIJ40BX100-30
The AirTAC SAIJ40X100-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 100 mm stroke that can be fine-tuned down by up to 30 mm, yielding a usable travel window of 70-100 mm. Delivering 628 N of push force at 0.5 MPa, it fits mid-range automation tasks perfectly.
This variant is configured with a SUS304 stainless steel rod (code B) for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU omits the magnet, meaning position sensing via CMSE or DMSE switches is not supported without modification.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-30 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-30 |
|---|---|
| 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 SAIJ40BX100-30
| 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 SAIJ40BX100-30 Is Used
Machine Changeover
Dial in the 70-100 mm travel window during product size changes to set precise end-stops without swapping out the entire cylinder assembly.
Assembly Positioning
Leverage the 628 N push force at 0.5 MPa to press or position components, fine-tuning the final 30 mm of stroke to accommodate varying part tolerances.
Conveyor Diverter Setup
Adjust the retract end-position on the fly during line commissioning to perfectly align diverter arms without machining new hard stops.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-30 the Right Cylinder?
Select this 40 mm bore cylinder when an application requires 628 N push force at 0.5 MPa, stepping up from a 32 mm bore (402 N) if extra thrust is needed, or down to a 50 mm bore (982 N) for heavier loads. The adjustable stroke is chosen over a fixed SAI cylinder when you need to dial in the exact end-position during machine commissioning or product changeover without adding external stops.
Remember that the rear adjuster acts only as a travel stop to set deceleration, not as a lock; it will not hold the load without live air. For load-holding requirements, consider an external pilot-operated check valve or the SAIL lock cylinder. This model uses a G1/4 port, PT threads, and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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 SAIJ40BX100-30 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 screw allows you to shorten the effective travel from the nominal 100 mm down to 70 mm, creating a 70-100 mm usable window. It functions as a mechanical stop for end-position tuning and is not a locking device.
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.
Request a Quote for Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-30
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.