Airtac SAIJ80 Adjustable Cylinder SAIJ80X650-40
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X650-40 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
- 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 SAIJ80 Adjustable Cylinder SAIJ80X650-40
The AirTAC SAIJ80X650-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 610 to 650 mm, allowing you to dial back the nominal stroke by up to 40 mm during machine commissioning. Delivering 4523 N of push force at 0.9 MPa, it handles heavy positioning tasks with precision.
The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches. A 25 mm carbon steel rod with an M20x1.5 thread handles high side loads, while the rear mechanical stopper sets the end position without acting as a load-holding brake.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X650-40 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X650-40 |
|---|---|
| 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 SAIJ80X650-40
| 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 SAIJ80X650-40 Is Used
Machine Changeovers
Dial in the exact 610 to 650 mm end-stop position during format changeovers without replacing the cylinder or bolting on external stops.
Variable End Positioning
Fine-tune the retract distance on automated assembly lines to accommodate varying part sizes on the fly.
Heavy Load Handling
Leverage the 80 mm bore's 4523 N push force to shift heavy fixtures while retaining the ability to trim the stroke by 40 mm.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X650-40 the Right Cylinder?
Choose this 80 mm bore when 50 mm (1374 N push at 0.5 MPa) is too weak or 100 mm (7068 N at 0.9 MPa) is oversized. The 40 mm adjustment range is ideal for product changeovers, letting you fine-tune the retract position without swapping cylinders or adding external stops. For position holding without live air pressure, use a SAIL or BSAI cylinder instead.
This model uses PT tapered G3/8 ports and a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Because the 650 mm stroke is long, an external guide rail is recommended to prevent rod binding under heavy loads.
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 SAIJ80X650-40 FAQ
At 0.9 MPa, this 80 mm bore cylinder provides 4523 N of push force and 4071 N of pull force. It operates at speeds between 30 and 800 mm/s.
A rear adjusting screw acts as a mechanical stopper, allowing you to shorten the effective stroke from 650 mm down to 610 mm. This adjuster only sets the travel end and does not hold the load without continuous air pressure.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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