Airtac SAIJ80 Adjustable Cylinder SAIJ80BX115-20
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX115-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 115mm 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
- Stroke115 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 SAIJ80BX115-20
The AirTAC SAIJ80X115-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel down from a 115 mm nominal stroke to a 95 mm minimum. A PT tapered G3/8 port feeds the 25 mm rod, and the unit reaches speeds of 30-800 mm/s.
This specific SKU is built with a SUS304 stainless steel rod (material code B) for superior corrosion resistance. It carries a 36 mm adjustable air cushion at both ends to manage kinetic energy. Note that the rear adjuster acts purely as a travel stop for commissioning end-position tuning, not as a lock, so the cylinder cannot hold a load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX115-20 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX115-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 115 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 SAIJ80BX115-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×115 | 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 SAIJ80BX115-20 Is Used
Machine Changeover
Dial in the exact 95 to 115 mm end-stop position during product size transitions without physically replacing the cylinder or adding shims.
End-Position Tuning
Fine-tune the retract stroke at commissioning to absorb mechanical tolerance stack-up in your tooling, using the rear screw rather than external stops.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX115-20 the Right Cylinder?
Choose this adjustable-stroke model over a fixed SAI when your machine setup requires precise end-position tuning during commissioning or product changeover, allowing you to dial in the 95-115 mm travel window without swapping cylinders or adding external stops. If your application requires less force, stepping down to a 63 mm bore yields 1559 N at 0.5 MPa, whereas a 100 mm bore offers 3927 N for heavier loads.
Because this SKU lacks a magnet, it cannot host internal sensors; if you need position detection, specify the -S option for AirTAC CMSE reed or DMSE electronic solid-state switches. For dimensionally interchangeable ISO 15552 replacements, match the 80 mm bore, 115 mm stroke, 20 mm adjustment, PT G3/8 port, and your required mounting bracket from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2). Since the 115 mm stroke is under 300 mm, side-load risks are lower, but an external guide is still recommended for heavy lateral loads.
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 SAIJ80BX115-20 FAQ
The rear adjuster screw lets you shorten the 115 mm nominal stroke by up to 20 mm, creating a usable travel window of 95 to 115 mm. This mechanism acts as a travel stop for fine-tuning end positions and does not lock or hold the load without continuous air pressure.
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