Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-20
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 180mm 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
- Stroke180 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-20
The AirTAC SAIJ80X180-20 is a double-acting ISO 15552 profile cylinder featuring a built-in rear stroke adjuster. It provides a nominal 180 mm stroke that can be dialed back by up to 20 mm, creating a precise 160-180 mm usable travel window for commissioning flexibility. Delivering 2513 N of push force at 0.5 MPa, it handles substantial actuation tasks with ease.
This extruded aluminum body includes dual sensor grooves for CMSE reed or DMSE electronic switches. The 25 mm carbon steel rod and M20x1.5 thread offer robust resistance to side loads, while the PT G3/8 porting ensures high flow. The rear adjuster acts purely as a mechanical stop to set end positions and must not be confused with a locking mechanism.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 180 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 SAIJ80X180-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×180 | 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 SAIJ80X180-20 Is Used
End-Position Fine Tuning
Dial in the exact 160-180 mm retract position during machine commissioning without adding bulky external stopper blocks.
Product Changeover
Quickly adjust the stroke length on packaging lines when handling slightly different carton or product sizes.
Assembly Pressing
Utilize the 2513 N thrust at 0.5 MPa for pressing components, modifying the travel limit to accommodate different part heights.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X180-20 the Right Cylinder?
Choose this 80 mm bore when 50 mm (982 N push at 0.5 MPa) is too weak, but 100 mm (3927 N) is oversized. The adjustable 160-180 mm travel window is ideal for machines requiring variable end-stops during product changeovers, avoiding the need to physically swap out a fixed-stroke SAI cylinder. Mounting options are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Because the stroke is 180 mm, the unsupported rod length is moderate, but external guides are recommended if heavy lateral loads exist. To hold a load securely without live air pressure, this cylinder will not suffice; you must integrate an external rod lock or pilot-operated check valve, or select a SAIL or BSAI series 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 SAIJ80X180-20 FAQ
It features a rear adjusting screw that allows you to shorten the effective stroke by up to 20 mm. This gives you a usable travel window of 160 to 180 mm, letting you set the exact end position without changing the cylinder.
At 0.5 MPa operating pressure, it provides 2513 N of push force and 2268 N of pull force. It can deliver up to 4523 N of push force at 0.9 MPa.
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Standard models usually ship in 3-4 days.
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