Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 145mm 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
- Stroke145 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-50S
The AirTAC SAIJ80X145-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 2513N of push force at 0.5 MPa. It features a carbon steel rod and a PT tapered port. Because of the 50mm adjustment code, you can dial back the 145mm nominal stroke to achieve a precise 95-145mm usable travel window during commissioning.
This extruded aluminum profile cylinder includes a magnet (-S) for electronic DMSE or reed CMSE position sensing. The rear stopper acts purely as a travel limit and relies on the built-in air cushion for end-deceleration; it does not hold the load without live air pressure. It uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB and CA options.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 145 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 SAIJ80X145-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×145 | 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 SAIJ80X145-50S Is Used
Product Changeovers
Quickly dial in the 95-145mm stroke window during format changes on packaging lines without installing external physical stops.
End-Position Tuning
Fine-tune the exact retract distance at machine commissioning to perfect seating pressure against varying workpieces.
Assembly Pressing
Leverage the 2513N push force at 0.5 MPa for pressing bearings, using the adjuster to set precise travel limits.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-50S the Right Cylinder?
Choose this 80mm bore when you need more thrust than a 63mm cylinder (1559N at 0.5 MPa) but want to avoid the bulk of a 100mm unit. The adjustable stroke is ideal for product changeovers, letting you fine-tune the end position from 95 to 145mm without swapping hardware. For holding loads without live air, select a SAIL or BSAI cylinder instead, as this adjuster is only a stop.
As a dimensionally interchangeable ISO 15552 cylinder, it matches standard mounting footprints. To replace an existing unit, confirm an 80mm bore, 145mm stroke, 50mm adjustment, PT G3/8 port, and the -S magnet. Since the stroke is under 300mm, side-load stress is moderate, but ensure the M20x1.5 rod thread is aligned properly to avoid binding.
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 SAIJ80X145-50S FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.7 MPa, the push force increases to 3518N.
The rear adjuster screw allows you to shorten the 145mm nominal stroke by up to 50mm, creating a usable travel window of 95-145mm. This stopper only limits travel and does not lock the load without air pressure.
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