Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-50 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 SAIJ80X145-50
The AirTAC SAIJ80X145-50 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 145 mm stroke that can be fine-tuned backward by up to 50 mm, yielding a usable travel window of 95 to 145 mm. Delivering a robust 4523N of push force at 0.9 MPa, it fits perfectly into medium-to-heavy machinery requiring precise end-position calibration.
This 80mm bore unit uses a G3/8 port and a 25mm carbon steel rod with an M20x1.5 thread, providing excellent rigidity against side loads. The extruded aluminum barrel includes sensor grooves on both sides for mounting AirTAC CMSE reed or DMSE electronic switches. Mounting options span Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting rear pivot styles like CA and CB to suit rigid-frame installations.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-50 |
|---|---|
| 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 SAIJ80X145-50
| 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 SAIJ80X145-50 Is Used
Product Size Changeovers
Quickly adapt forming or clamping stations to new material lengths by dialing the travel back from 145mm to 95mm without changing hardware.
Commissioning End-Stops
Fine-tune the final retract position during machine setup to avoid crushing parts, using the 50mm rear adjustment instead of adding spacer shims.
Variable Assembly Presses
Leverage the 4523N push force at 0.9MPa for pressing operations while retaining the flexibility to alter the press depth for different product variants.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X145-50 the Right Cylinder?
Choose this 80mm bore when your application demands high thrust (4523N push at 0.9 MPa) but requires on-the-fly end-position tuning without swapping cylinders. If your force needs are lower, stepping down to a 63mm bore yields 2805N push force at 0.9 MPa. The 50mm adjustment range is ideal for product changeovers, allowing operators to dial in the exact 95-145mm travel window during commissioning rather than machining external stops. Because the 145mm stroke is under the 300mm threshold, external guide rails are less critical, though the 25mm rod still handles standard lateral loads well.
Remember that the rear adjuster acts strictly as a travel stop, not a load-holding device; the cylinder will not maintain its position without live air pressure. For true fail-safe load holding, consider the AirTAC SAIL pneumatic lock series or an external rod lock. To match this ISO 15552 replacement, specify: 80mm bore, 145mm stroke, 50mm adjustment, PT tapered port thread, standard carbon steel rod, no magnet, and your required mounting from the SAIJ subset.
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 SAIJ80X145-50 FAQ
At 0.9 MPa operating pressure, this 80mm bore cylinder generates 4523N of push force and 4071N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 513 kgf of push force.
The rear adjuster screw acts as a mechanical stop that lets you trim the effective travel back by up to 50mm. For this 145mm stroke model, this creates an adjustable usable travel window of 95 to 145mm, settable during commissioning without replacing the cylinder.
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