Airtac SAIJ50 Adjustable Cylinder SAIJ50AX80-50S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX80-50S 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 SAIJ50AX80-50S
The AirTAC SAIJ50X80-50-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 80 mm stroke that can be dialed back by up to 50 mm, creating a highly flexible 30-80 mm usable travel window. Delivering 982 N of push force at 0.5 MPa, it is built with a SUS420J2 stainless steel rod and includes a magnet for position sensing.
This adjustable-stroke design allows you to fine-tune the retract end position at commissioning or during product changeovers without swapping the cylinder or adding external stops. The rear screw acts purely as a travel stop and works alongside standard air cushions to decelerate the load, but it does not hold the load without live air pressure. For load-holding without continuous air, an external rod lock or a related SAIL pneumatic-lock cylinder is required.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX80-50S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX80-50S |
|---|---|
| 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 SAIJ50AX80-50S
| 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 SAIJ50AX80-50S Is Used
Product Changeovers
Dial in the exact retract distance from 30 to 80 mm on packaging lines when switching between different container sizes without changing hardware.
End-Position Calibration
Fine-tune the final end-stop during machine commissioning to achieve precise pressing or clamping force without machining external spacers.
Variable End Stops
Provide adjustable travel limits for automated test fixtures where the effective stroke length needs to be tweaked between runs.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX80-50S the Right Cylinder?
Choose this 50 mm bore when an application demands 982 N of push force at 0.5 MPa, stepping up from a 40 mm bore that yields 628 N, or down from a 63 mm bore providing 1559 N. The generous 50 mm adjustment range on an 80 mm nominal stroke is ideal for machines requiring variable end-stops or frequent product-size changeovers, offering flexibility that a fixed-stroke SAI cannot match. Because the stroke is relatively short, side-load stress is minimized, but the load should still be guided to prevent binding.
To match this exact ISO 15552 interchangeable replacement, specify a 50 mm bore, 80 mm stroke, PT tapered port threads (G1/4), and the -S magnet option for CMSE reed or DMSE electronic sensors. Available mountings include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ50AX80-50S 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 0.7 MPa, the push force increases to 1374 N.
The rear adjuster screw allows you to trim the effective stroke by up to 50 mm. With the 80 mm nominal stroke, this creates a usable travel window of 30 to 80 mm. The adjuster is a mechanical stop, not a lock, so the cylinder requires live air to hold its position.
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