Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 75mm 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
- Stroke75 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-30S
The AirTAC SAIJ80X75-30-S is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, delivering 2513N of push force at 0.5 MPa. The -30 code provides a usable travel window of 45-75mm, letting you dial back the retract end-position by up to 30mm during commissioning without bolting on external stops. It features a SUS304 stainless steel rod and a PT tapered port.
This adjustable-stroke model uses the standard SAI extruded aluminum barrel with sensor grooves on both sides. Equipped with a magnet, it supports AirTAC CMSE reed and DMSE electronic sensors for end-position feedback. The rear screw acts as a travel stop for fine-tuning, not a load-holding lock, so live air pressure is required to maintain position.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 75 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 SAIJ80BX75-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×75 | 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 SAIJ80BX75-30S Is Used
Product Changeover
Dial in the 45-75mm travel window on the rear adjuster to switch between different package sizes on a packaging line without swapping the cylinder.
End-Position Tuning
Fine-tune the retract stop during machine commissioning to perfect the resting position of a clamping actuator without adding external stoppers.
Adjustable Forming Stop
Set a precise material bend depth by adjusting the stroke back from the 75mm maximum, using the rear screw to define the exact travel limit.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX75-30S the Right Cylinder?
Choose this 80mm bore when a 50mm bore (982N push at 0.5 MPa) is insufficient for your load, but a 100mm bore (3927N) would be excessive overkill. An adjustable stroke is preferred over a fixed SAI cylinder when you need variable end-stops to accommodate product-size changes on a single line. For load-holding without continuous air pressure, select the SAIL or BSAI series instead, as the SAIJ adjuster cannot hold loads unpowered.
When matching this for an ISO 15552 replacement, specify: 80mm bore, 75mm stroke, 30mm adjustment, PT G3/8 port, and the -S magnet. The mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Although the 25mm rod and M20x1.5 thread handle high side loads, external guiding is recommended for long unsupported strokes.
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 SAIJ80BX75-30S FAQ
At 0.5 MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 513 kgf.
The rear adjuster screw lets you shorten the effective stroke by up to 30mm from the 75mm nominal length, creating a usable travel window of 45-75mm. It functions as a mechanical stop to set the end position, not as a lock, so air pressure must be maintained to hold the load.
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