Airtac SAIJ40 Adjustable Cylinder SAIJ40BX190-100
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX190-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 190mm 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
- Stroke190 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX190-100
The AirTAC SAIJ40X190-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel anywhere within a 90-190 mm window during commissioning. Delivering 628 N of push force at 0.5 MPa, it uses a SUS304 stainless steel rod for superior corrosion resistance and pairs PT tapered port threads with a G1/4 air supply.
This adjustable-stroke model omits the FB, CA, CB, and CR mounting hardware found on some cylinders, offering a focused mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2. The rear adjustment mechanism acts purely as a travel stop to set deceleration and end-positions, meaning it will not hold a load safely without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX190-100 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX190-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 190 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 SAIJ40BX190-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×190 | 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 SAIJ40BX190-100 Is Used
Product Changeover Dials
Adjust the rear stopper by up to 100 mm to accommodate varying package lengths on a packaging line without disassembling the actuator assembly.
Commissioning End-Stop Tuning
Dial in the precise 90 to 190 mm travel distance during machine setup to perfect the seating force against mechanical variations.
Variable Positioning Stops
Set exact retract end-points for multi-stage machining processes where the raw material length fluctuates and requires flexible physical limits.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX190-100 the Right Cylinder?
Choose this 40 mm bore when your application requires 628 N of push force at 0.5 MPa (or 879 N at 0.7 MPa) and you need to dial in the exact end-of-stroke position on the fly. If your setup demands less force, the 32 mm bore provides 402 N at 0.5 MPa; if you need more clamping power, stepping up to the 50 mm bore yields 982 N at 0.5 MPa. Because the nominal stroke is 190 mm, you can safely use the full 100 mm adjustment range to accommodate significant product size changeovers without swapping out the cylinder body.
For an exact ISO 15552 dimensional replacement, match the 40 mm bore, 190 mm stroke, 100 mm adjuster, PT port thread, and your required mounting bracket. Since this cylinder lacks a magnet, it cannot host internal sensors; for position feedback you would need an external switch or a model specified with the -S magnet for CMSE or DMSE sensors. For any load-holding requirements without continuous air pressure, this cylinder is insufficient, and you should specify an SAIL or BSAI series cylinder instead.
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 SAIJ40BX190-100 FAQ
The rear adjuster screw lets you shorten the effective travel from 190 mm down to 90 mm. It acts as a mechanical stop to set the end position, but it is not a lock and cannot hold the load without continuous air pressure.
At 0.5 MPa operating pressure, this double-acting cylinder provides 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 879 N.
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