Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-30S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 275mm 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
- Stroke275 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 SAIJ50AX275-30S
The AirTAC SAIJ50X275-30-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end position. With a 275 mm nominal stroke and a 30 mm adjustment range, it provides a usable travel window of 245 to 275 mm. This bore size delivers 982 N of push force and 825 N of pull force at 0.5 MPa, fitting cleanly into medium-force pneumatic setups.
This variant includes a SUS420J2 stainless steel rod (code A) for improved corrosion resistance and a built-in magnet (-S) for use with CMSE reed or DMSE electronic sensors. The extruded aluminum barrel features sensor grooves on both sides, and the rear adjuster acts purely as a mechanical stop to trim the retract stroke without needing external stops.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-30S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 275 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 SAIJ50AX275-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×275 | 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 SAIJ50AX275-30S Is Used
Product Changeover
Quickly adapt the stroke window from 275 mm down to 245 mm on a packaging line without swapping out the entire cylinder or adding external mechanical stops.
Commissioning Calibration
Fine-tune the exact retract end position during machine setup to ensure precise alignment of a 982 N push force against varying material thicknesses.
Variable End Stops
Adjust the travel distance on the fly for a conveyor sorting mechanism that handles multiple package sizes on the same production line.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX275-30S the Right Cylinder?
Choose this 50 mm bore when your application requires around 982 N of push force at 0.5 MPa; step down to a 40 mm bore (628 N) for lighter loads or up to a 63 mm bore (1559 N) if you need more thrust. The adjustable stroke is perfect for product changeovers, allowing you to dial in the exact end position during commissioning rather than machining new hard stops. Because the nominal stroke is 275 mm, you should use an external guide to prevent excessive side loading on the 20 mm rod.
For a drop-in ISO 15552 replacement, match the 50 mm bore, 275 mm stroke, 30 mm adjustment, PT tapered port thread, and -S magnet. Remember that the rear adjuster is a travel stop, not a lock; if you need to hold a load without live air pressure, use an AirTAC SAIL or BSAI 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 SAIJ50 Adjustable Cylinder SAIJ50AX275-30S FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 30 mm, giving you a usable travel window of 245 to 275 mm. It acts as a mechanical stop at the retract end and does not lock the load without live air pressure.
At 0.5 MPa operating pressure, this double-acting cylinder provides 982 N of push force and 825 N of pull force. It can reach up to 1767 N of push force at 0.9 MPa.
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Covers non-human-caused product damage.
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