Airtac SAIJ50 Adjustable Cylinder SAIJ50AX185-30S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX185-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 185mm 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
- Stroke185 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 SAIJ50AX185-30S
The AirTAC SAIJ50X185-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 185 mm travel to a precise 155-185 mm window during commissioning. Fitted with a SUS420J2 stainless steel rod and a PT tapered port, it delivers 982 N of push force at 0.5 MPa. This variant includes a magnet for non-contact position sensing using CMSE reed or DMSE electronic switches.
The rear adjuster acts purely as a travel stop to fine-tune end positions without adding external stops or swapping the cylinder. The extruded aluminum barrel features sensor grooves on both sides, and the mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options. Note that the adjuster and air cushions decelerate the load but do not hold it without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX185-30S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX185-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 185 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 SAIJ50AX185-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×185 | 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 SAIJ50AX185-30S Is Used
Product Changeovers
Dial in the 155-185 mm travel window on the fly to accommodate different package sizes on a packaging line without physically swapping out the actuator.
End-Position Tuning
Fine-tune the retract stroke during machine commissioning to perfectly time the picking or placing of components, avoiding the need for external mechanical stops.
Assembly Pressing
Utilize the 982 N push force at 0.5 MPa for light-duty pressing operations while adjusting the travel end to account for material thickness variations.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX185-30S the Right Cylinder?
Choose this 50 mm bore when an application requires 982 N push force at 0.5 MPa, stepping up from a 40 mm bore that provides 628 N. The 30 mm adjustment range is ideal for machine setups requiring variable end-stops during product changeovers rather than relying on a fixed-stroke SAI cylinder. Because the stroke is 185 mm, an external guide is recommended if side loads are present.
For load-holding without continuous air pressure, the SAIJ adjuster is not a lock; consider an AirTAC SAIL pneumatic lock, BSAI clamp-lock, or an external pilot-operated check valve. To replace an ISO 15552 cylinder, match the 50 mm bore, 185 mm stroke, 30 mm adjuster, PT port, and the -S magnet requirement.
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 SAIJ50AX185-30S FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 200 kgf.
The rear adjuster screw allows you to shorten the effective travel from the nominal 185 mm down to 155 mm. It acts as a mechanical stop to set the end position precisely, but it is not a lock and will not hold the load without live air pressure.
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 SAIJ50AX185-30S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.