Airtac SAIJ50 Adjustable Cylinder SAIJ50BX80-40
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX80-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 80mm 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.
- BoreØ50 mm
- Stroke80 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX80-40
The AirTAC SAIJ50X80-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 982N of push thrust at 0.5 MPa. By turning the rear stopper screw, you can shorten the effective travel from its 80 mm nominal length down to 40 mm, creating a wide 40-80 mm usable window for dialing in exact end positions during commissioning. This built-in adjustability eliminates the need to swap physical cylinders or bolt on external stops when refining machine timing.
This specific SKU is configured with a SUS304 stainless steel rod (option B) for superior corrosion resistance in washdown or chemically active settings, alongside PT tapered port threads. The extruded aluminum barrel features sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches, though this particular model is supplied without an integrated magnet. The rear adjuster acts strictly as a travel stop and cannot hold a load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX80-40 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX80-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 80 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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, 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50BX80-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×80 | 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 SAIJ50 Adjustable Cylinder SAIJ50BX80-40 Is Used
Product Changeover Dials
Quickly set new retract end-stops on packaging lines handling varying carton sizes, using the 40-80 mm travel window to adapt motions without hardware swaps.
Machine Commissioning
Fine-tune the final resting position of a gripper or pusher during setup, absorbing mechanical tolerance stack-ups directly at the rear stopper screw.
Washdown Positioning
Leverage the SUS304 stainless steel rod for pushing or lifting tasks in food processing environments where moisture and corrosion resistance are mandatory.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX80-40 the Right Cylinder?
Choose this 50 mm bore when an application requires moderate force—stepping down to a 40 mm bore drops the 0.5 MPa push thrust to 628N, while an 80 mm bore jumps to 2513N. The SAIJ50X80-40 is selected specifically for its generous 40 mm adjustment range, allowing engineers to set variable end-stops for product changeovers without ordering custom-length cylinders. It supports a speed range of 30-800 mm/s and uses adjustable air cushions at both ends to decelerate the piston smoothly.
For exact ISO 15552 replacement matching, verify the 50 mm bore, 80 mm stroke, 40 mm adjustment range, G1/4 port size (PT thread type), and the absence of a magnet. The available mounting interface includes Basic, FA, LB, TC, FTC, TCM1, and TCM2. If the machine cycle requires the load to be held mechanically in place without continuous air pressure, this standard adjuster stop is insufficient; consider the AirTAC SAIL or BSAI series 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 SAIJ50 Adjustable Cylinder SAIJ50BX80-40 FAQ
At a 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982N of push thrust and 825N of pull thrust. At the maximum 1.0 MPa pressure, it can deliver up to 200 kgf of push force.
The rear stopper screw mechanically limits the piston's inward travel, allowing you to trim the effective stroke anywhere between 40 mm and 80 mm. This stopper only sets the end position and decelerates the load via the air cushion; it does not lock or hold the load without live air pressure.
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