Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 700mm 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
- Stroke700 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-50
The AirTAC SAIJ80X700-50 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers a robust 2513 N push force at 0.5 MPa, making it suitable for heavy-duty positioning tasks. The integrated adjustment screw allows you to trim the effective travel back by up to 50 mm, creating a precise 650-700 mm usable stroke window without changing the physical cylinder length.
This variant is configured with a SUS304 stainless steel rod (code B) for superior corrosion resistance and features PT tapered port threads with a G3/8 interface. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. While the rear screw and variable air cushions fine-tune the end-of-travel deceleration, remember this mechanism acts purely as a stop and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 700 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 SAIJ80BX700-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×700 | 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 SAIJ80BX700-50 Is Used
Product Changeover
Quickly fine-tune the 650-700 mm stroke end-position during format size changes on a packaging line, avoiding the need to physically swap out long-stroke cylinders.
Heavy-Duty Positioning
Leverage the 2513 N push force at 0.5 MPa to move heavy pallets or workpieces into a machining station while using the rear screw to dial in the exact clamping distance.
Long-Stroke Assembly Press
Utilize the 700 mm travel for reaching deep into automated machinery, relying on the 50 mm adjustment window to set precise lower dead center without external hard stops.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX700-50 the Right Cylinder?
Select this 80 mm bore when an application requires more thrust than a 63 mm cylinder (which provides 1559 N push at 0.5 MPa) but does not need the full 3927 N output of a 100 mm unit. The adjustable stroke is ideal for machine setup and product changeovers, allowing operators to dial in the exact end position without adding external stopper blocks. Because the nominal stroke is 700 mm, the 25 mm piston rod and M20x1.5 rod thread will be subjected to leverage forces; an external guide rail is highly recommended to prevent excessive side-loading and premature seal wear.
To match this ISO 15552 interchangeable cylinder, verify the 80 mm bore, 700 mm stroke, 50 mm adjustment range, G3/8 PT ports, and the SUS304 stainless steel rod material. Note that the SAIJ mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR brackets. If your process requires true load-holding without continuous air pressure, consider the SAIL (air-released lock) or BSAI (clamp-lock) variants instead of relying on the adjustment stopper.
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 SAIJ80BX700-50 FAQ
The rear adjuster acts as a mechanical stop that lets you shorten the nominal 700 mm stroke by up to 50 mm, providing a usable travel window of 650 to 700 mm. It is used to fine-tune the retract end position at commissioning but does not lock or hold the load without continuous air pressure.
At an operating pressure of 0.5 MPa, the SAIJ80X700-50 delivers a push force of 2513 N and a pull force of 2268 N. At 0.7 MPa, the push force increases to 3518 N, with a maximum rated push force of 4523 N at 0.9 MPa.
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