Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 650mm 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
- Stroke650 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-50S
The AirTAC SAIJ80X650-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 600 to 650 mm. It delivers a push force of 2513 N at 0.5 MPa, scaling up to 4523 N at 0.9 MPa, making it well-suited for heavy-duty positioning tasks. The barrel is extruded aluminum with sensor grooves on both sides, and this -S variant includes a magnet for use with CMSE reed and DMSE electronic solid-state switches.
This unit features a SUS420J2 stainless steel rod (material code A) and PT tapered port threads (G3/8). The rear adjuster acts purely as a mechanical stop to fine-tune the retract end position during commissioning or product-size changeovers. It does not hold the load without live air pressure; for true load-holding without continuous air, consider the SAIL or BSAI series instead.
Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 650 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 SAIJ80AX650-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×650 | 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 SAIJ80AX650-50S Is Used
Machine Changeover
Dial in the retract position by up to 50 mm during product-size changeovers without swapping out the entire cylinder or adding external stopper blocks.
Variable End-Stop Diverter
Provides an adjustable travel window of 600 to 650 mm for a diverter arm that must accommodate different package sizes on a shared conveyor line.
Heavy-Duty Positioning
Leverages the 2513 N push force at 0.5 MPa to move heavy pallets, using the rear screw to fine-tune the exact resting position during machine setup.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-50S the Right Cylinder?
Choose this 80 mm bore when your application requires more thrust than a 63 mm cylinder (which provides 1559 N at 0.5 MPa) but does not need the full 3927 N push force of a 100 mm unit. An adjustable-stroke cylinder is preferred over a fixed-stroke SAI when you need a variable end-stop to dial in the exact retract position on the fly without swapping the cylinder or bolting on external stops.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 650 mm nominal stroke, 50 mm adjustment range, G3/8 PT ports, and -S magnet. Mounting options are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the 650 mm stroke is long and unsupported, the 25 mm rod with its M20x1.5 thread will still experience leverage forces; an external guide is strongly recommended to prevent side-load damage.
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 SAIJ80AX650-50S FAQ
At 0.5 MPa, the 80 mm bore provides a push force of 2513 N and a pull force of 2268 N. At 0.9 MPa, the push force increases to 4523 N.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke from 650 mm down to 600 mm. It is a travel stop, not a lock, and does 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 usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ80 Adjustable Cylinder SAIJ80AX650-50S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.