Airtac SAIJ80 Adjustable Cylinder SAIJ80BX185-50
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX185-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 185mm 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
- Stroke185 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 SAIJ80BX185-50
The AirTAC SAIJ80X185-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 185 mm travel by up to 50 mm. This creates a precise 135-185 mm usable window for fine-tuning the retract end position during commissioning. It delivers a robust 2513 N pull force at 0.5 MPa, making it well-suited for heavier positioning tasks.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and ships with PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. It uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options found on some standard variants.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX185-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX185-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 185 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 SAIJ80BX185-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×185 | 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 SAIJ80BX185-50 Is Used
Machine Changeovers
Dial in the exact retract distance up to 50 mm during product size transitions without changing the cylinder.
End-Position Tuning
Hit precise mechanical endpoints during commissioning using the 135-185 mm adjustable travel window.
Heavy Assembly Lines
Leverage the 2513 N pull force to move substantial jigs or fixtures through a controlled stroke.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX185-50 the Right Cylinder?
Choose this 80 mm bore when your application requires more force than a 63 mm cylinder (which provides 1402 N pull at 0.5 MPa) but does not need the full 3681 N pull of a 100 mm unit. The 50 mm adjustment range is ideal for product changeovers, letting you set variable end-stops without physically swapping the cylinder or adding external stops.
Because the rear adjuster acts only as a travel stop and the air cushions manage deceleration, neither will hold a load without live air pressure. If your setup requires true fail-safe load holding, consider the SAIL or BSAI series instead. This configuration uses a PT port thread and lacks a magnet for position sensing.
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 SAIJ80BX185-50 FAQ
The nominal stroke is 185 mm, but the rear adjuster allows you to shorten the effective travel by up to 50 mm, creating a usable stroke window of 135 to 185 mm.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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