Airtac SAIJ50 Adjustable Cylinder SAIJ50AX155-75S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX155-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 155mm 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
- Stroke155 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 SAIJ50AX155-75S
The AirTAC SAIJ50X155-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 80-155 mm, allowing you to dial back the 155 mm nominal stroke by up to 75 mm during machine commissioning. This bore delivers 982 N of push force at 0.5 MPa, making it well-suited for moderate-load positioning tasks.
This configuration includes a SUS420J2 stainless steel rod for improved corrosion resistance and is equipped with a magnet for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel features sensor grooves on both sides, and the standard PT tapered ports ensure a reliable pneumatic connection.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX155-75S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX155-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 155 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 SAIJ50AX155-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×155 | 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 SAIJ50AX155-75S Is Used
Product Changeover
Quickly adapt the cylinder end-position for different package sizes on a packaging line without changing hardware.
Machine Commissioning
Fine-tune the 80-155 mm travel window during setup to perfectly time the stroke sequence without adding external stops.
Variable End Stops
Provide adjustable physical stops for diverter gates or positioning pushers that handle varying product lengths.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX155-75S the Right Cylinder?
Choose this adjustable model over a fixed-stroke SAI when your application requires variable end-stops or frequent product-size changeovers without swapping the cylinder. If your application requires less force, stepping down to a 40 mm bore yields 628 N at 0.5 MPa; stepping up to a 63 mm bore provides 1559 N. Remember that the rear adjuster acts purely as a travel stop, not a lock. For true load-holding without live air pressure, consider the SAIL or BSAI series instead.
To replace an ISO 15552 cylinder, match the 50 mm bore, 155 mm stroke, 75 mm adjustment range, PT port threads, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. Because the 75 mm adjustment is substantial, ensure the load is guided to prevent excessive side-load on the 20 mm rod during the shortened travel positions.
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 SAIJ50AX155-75S FAQ
The rear adjuster screw lets you shorten the 155 mm nominal stroke by up to 75 mm, giving an effective travel range of 80 to 155 mm. It functions as a mechanical stop to set the retract position and does not lock the load without live air pressure.
At an operating pressure of 0.5 MPa, the SAIJ50X155-75-S provides 982 N of push force and 825 N of pull force. The maximum thrust is 200 kgf at 1.0 MPa.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ50 Adjustable Cylinder SAIJ50AX155-75S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.