Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 850mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ80 mm
- Stroke850 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-30S
The AirTAC SAIJ80X850-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 820 to 850 mm. Delivering 2513 N of push force at 0.5 MPa, it handles substantial pneumatic workloads. The integrated -S magnet enables position feedback via AirTAC CMSE reed or DMSE electronic solid-state sensors housed in the dual-side extruded barrel grooves.
This unit features a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance and carries PT tapered port threads sized at G3/8. The external rear stopper allows fine end-position tuning during commissioning without adding external stops, though it acts only as a travel limiter and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 850 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max stroke | Up to 1500 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×850 | 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 SAIJ80 Adjustable Cylinder SAIJ80AX850-30S Is Used
Product Size Changeovers
Quickly dial the retract stroke back by up to 30 mm when switching a packaging line to a different carton length, ensuring precise positioning without hardware changes.
Long-Stroke Material Handling
Moves heavy payloads along an 850 mm axis with 2513 N force, using the adjustable end-stop to perfectly time the handoff to downstream conveyors.
Machine Setup Commissioning
Fine-tune the final end-of-travel position during initial machine build, absorbing mechanical tolerances by trimming the effective stroke down to 820 mm.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX850-30S the Right Cylinder?
Choose this 80 mm bore when an application requires more thrust than the 63 mm variant (which provides 1559 N push at 0.5 MPa) but does not need the full 3927 N output of a 100 mm cylinder. The adjustable 820-850 mm window is ideal for machinery requiring product-size changeovers, allowing operators to dial in the exact retract distance on the fly instead of swapping out a fixed-stroke SAI cylinder. For exact ISO 15552 replacement matching, verify the 850 mm stroke, 30 mm adjustment, G3/8 PT ports, and desired mounting style.
Because the 850 mm stroke is long, the 25 mm rod diameter should be paired with an external guide to prevent excessive side-loading and rod deflection. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Remember that the rear adjuster is a stop, not a lock; if the machine needs to hold a load without continuous air pressure, select a 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 SAIJ80 Adjustable Cylinder SAIJ80AX850-30S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder generates 2513 N of push force and 2268 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 513 kgf.
The rear adjuster screw allows you to shorten the 850 mm nominal stroke by up to 30 mm, creating an adjustable travel window between 820 mm and 850 mm. This mechanism acts as a mechanical stop to tune the end position and does not lock the load without live air pressure.
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