Airtac SAIJ80 Adjustable Cylinder SAIJ80BX300-75S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX300-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 300mm stroke, G3/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ80 mm
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX300-75S
The AirTAC SAIJ80X300-75-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end position. With a 300 mm nominal stroke and a 75 mm adjustment range, it provides a usable travel window of 225-300 mm. The barrel is extruded aluminum with sensor grooves on both sides, and this configuration includes a SUS304 stainless steel rod and PT tapered ports.
The rear adjuster functions strictly as a travel stop to decelerate the piston, not as a lock. It enables precise end-position tuning at commissioning or during product changeovers without swapping the cylinder or adding external stops. For load-holding without live air pressure, a SAIL pneumatic lock or BSAI clamp-lock cylinder is required. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX300-75S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX300-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 300 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 | 2268 N | 2268 N |
| 0.7 MPa | 3175 N | — |
| Max (@1.0 MPa) | 463 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ80 Adjustable Cylinder SAIJ80BX300-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×300 | 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 SAIJ80BX300-75S Is Used
Variable End-Stop Tuning
Dial the rear adjuster up to 75 mm to change the effective stroke from 225 to 300 mm, perfect for accommodating different material thicknesses on a single line.
Machine Changeover Setup
Rapidly reconfigure the retract end-position during product family changeovers without physically removing the cylinder or bolting on external spacers.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX300-75S the Right Cylinder?
The adjustable 225-300 mm travel window is ideal for machines processing varying product sizes, allowing operators to dial in the exact retract stop on the fly. Because the 300 mm stroke is relatively long, the 25 mm rod and M20x1.5 thread will still experience leverage forces; an external guide is recommended to prevent side-load damage.
When specifying a replacement, verify the 80 mm bore, 300 mm stroke, 75 mm adjustment range, PT port threads, and the -S magnet for CMSE reed or DMSE electronic sensors. This SAIJ variant omits FB, CA, CB, and CR mounts, using a reduced ISO 15552 mounting set.
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 SAIJ80BX300-75S FAQ
The maximum thrust is 513 kgf at 1.0 MPa.
The rear adjuster acts as a stopper that can trim the nominal 300 mm stroke back by up to 75 mm, creating a usable travel window of 225 to 300 mm. It decelerates the piston but does not hold the load without live air pressure.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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