Airtac SAIJ50 Adjustable Cylinder SAIJ50AX900-30
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX900-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 900mm 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
- Stroke900 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 SAIJ50AX900-30
The AirTAC SAIJ50X900-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 982N push force at 0.5 MPa and provides a usable travel window of 870 to 900 mm, allowing you to dial back the nominal stroke by up to 30 mm. The PT port thread and SUS420J2 stainless steel rod (option A) enhance durability against minor moisture or washdown environments.
This adjustable-stroke design eliminates the need to swap cylinders or bolt on external stops during machine commissioning or product changeovers. The extruded aluminum barrel includes sensor grooves on both sides, ready for CMSE reed or DMSE solid-state switches if you add a magnet later. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX900-30 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX900-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 900 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 SAIJ50AX900-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×900 | 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 SAIJ50AX900-30 Is Used
Product Changeover
Quickly fine-tune the retraction end-stop by up to 30mm when switching between product sizes on a packaging line, avoiding physical cylinder swaps.
Long-Stroke Diverting
Acts as a diverter arm over a 870-900mm travel path, using the rear screw to perfectly time the resting position without adding external bumpers.
Assembly Press Tuning
Dial in the exact end-of-stroke contact force during machine commissioning, using the built-in stopper rather than machining custom spacers.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX900-30 the Right Cylinder?
Choose this 50mm bore when you need higher thrust than a 40mm bore (628N at 0.5 MPa) but want a smaller footprint than a 63mm bore (1559N at 0.5 MPa). The adjustable 870-900 mm window is ideal for setups requiring precise end-position tuning without replacing the cylinder. If your process requires true load-holding without continuous air pressure, a standard SAIJ will not suffice; consider an AirTAC SAIL (pneumatic lock) or BSAI (clamp-lock) cylinder instead.
Because this 900mm stroke exceeds typical lengths, the 20mm piston rod and M16x1.5 rod thread face increased side-load risks. For applications spanning this distance, an external guide rail is strongly recommended to prevent rod bending and premature seal wear. The mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options found on some other series.
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 SAIJ50AX900-30 FAQ
The rear adjuster screw lets you shorten the effective travel from 900mm down to 870mm. This built-in stopper allows fine-tuning of the retract position during setup, though it does not lock the load without live air pressure.
At a 0.5 MPa operating pressure, it provides 982N of push force and 825N of pull force. At the maximum 1.0 MPa pressure, the push force reaches 1767N.
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Covers non-human-caused product damage.
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