Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-50S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 155mm 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
- Stroke155 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-50S
The AirTAC SAIJ80X155-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that lets you dial back the nominal 155 mm travel by up to 50 mm. This yields a usable 105-155 mm end-position window, allowing precise mechanical tuning during commissioning without adding external stops. It delivers robust thrust, pushing 4523 N and pulling 2268 N at 0.9 MPa.
Equipped with a standard carbon steel rod and a -S magnet, this unit supports AirTAC CMSE reed and DMSE electronic sensors via the dual-side extruded barrel grooves. It features PT tapered G3/8 ports and adjustable air cushions at both ends to manage kinetic energy. Remember that the rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-50S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 155 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 SAIJ80X155-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×155 | 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 SAIJ80X155-50S Is Used
Variable End-Stop Tuning
Dial in the exact retract distance from 105 to 155 mm during machine setup, providing flexibility for different product sizes without changing the cylinder.
Changeover Commissioning
Fine-tune the stroke end-position on the fly during line changeovers, eliminating the need to swap out the entire actuator or bolt on external physical stops.
High-Force Positioning
Leverage the 4523 N push force at 0.9 MPa to move and position heavy jigs or workpieces, using the 50 mm adjustment window to set precise mechanical limits.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X155-50S the Right Cylinder?
Choose this 80 mm bore when an application requires around 4523 N of push force at 0.9 MPa, stepping up from a 63 mm bore that provides 2805 N. The 50 mm adjustment range is ideal for machinery requiring variable end-stops during product changeovers. If you need to hold a load mechanically without continuous air pressure, this cylinder is not suitable; consider the SAIL or BSAI locking variants instead.
For an exact ISO 15552 replacement, match the 80 mm bore, 155 mm stroke, 50 mm adjustment, PT G3/8 ports, and the -S magnet option. Because the stroke is under 300 mm, side-load stress is moderate, but the 25 mm rod diameter handles standard loads well. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB and CA options.
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 SAIJ80X155-50S FAQ
The rear adjuster screw lets you shorten the 155 mm nominal stroke by up to 50 mm, creating a usable travel window of 105 to 155 mm for precise end-position tuning.
It provides a push force of 4523 N and a pull force of 2268 N at 0.9 MPa, with a maximum thrust of 513 kgf at 1.0 MPa.
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