Airtac SAIJ80 Adjustable Cylinder SAIJ80X150-20S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X150-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 150mm 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
- Stroke150 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X150-20S
The AirTAC SAIJ80X150-20-S is a double-acting ISO 15552 profile cylinder featuring a rear mechanical adjuster that trims the effective stroke. This specific SKU provides a usable travel window of 130 to 150 mm, allowing you to dial back the nominal 150 mm stroke by up to 20 mm during commissioning. It delivers a robust 2513 N of push force and 2268 N of pull force at 0.5 MPa operating pressure.
Equipped with a -S magnet, the extruded aluminum barrel integrates sensor grooves on both sides for direct mounting of CMSE reed or DMSE electronic solid-state switches. The 25 mm carbon steel rod and M20x1.5 rod thread provide high structural rigidity, while the PT tapered G3/8 port ensures a tight pneumatic seal. The rear adjuster acts purely as a travel stop for end-position tuning, not as a load-holding lock.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X150-20S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X150-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 150 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 SAIJ80X150-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×150 | 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 SAIJ80X150-20S Is Used
Product Changeover Tuning
Dial in the 130-150 mm stroke window precisely when switching a packaging line to a different carton size, using the rear screw to set the exact end-stop without changing hardware.
Variable End-Stop Positioning
Fine-tune the retraction end position during machine commissioning to perfect timing sequences, leveraging the 20 mm adjustment range to absorb mechanical tolerances.
Heavy-Duty Assembly Clamping
Utilize the 2513 N push force at 0.5 MPa to securely clamp heavy components during assembly, relying on the adjustable stop to prevent over-travel.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X150-20S the Right Cylinder?
Choose this 80 mm bore when an application requires substantial thrust—stepping up from a 63 mm bore increases push force at 0.5 MPa from 1559 N to 2513 N. The adjustable stroke is ideal for machine changeovers where exact end-positioning varies slightly between product sizes, eliminating the need to physically swap cylinders or bolt on external stops. For fixed-travel needs, a standard SAI cylinder suffices.
When replacing an ISO 15552 cylinder, match the 80 mm bore, 150 mm nominal stroke, 20 mm adjustment range, PT G3/8 port, and -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2. Since the 25 mm rod handles side loads well, note that this 150 mm stroke is short enough to typically operate without an external guide. If the machine requires true position holding without live air pressure, use an SAIL or BSAI cylinder instead, as the SAIJ rear stop cannot hold loads unpowered.
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 SAIJ80X150-20S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At the maximum 1.0 MPa pressure, it delivers 513 kgf.
The rear external adjuster screw acts as a mechanical stop that shortens the nominal 150 mm stroke by up to 20 mm, giving an adjustable travel window of 130 to 150 mm. It sets the end position but does not lock the load without live air pressure.
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