Airtac SAIJ80 Adjustable Cylinder SAIJ80BX250-30S
The AirTAC SAIJ80 Adjustable Cylinder SAIJ80BX250-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 250mm 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
- Stroke250 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 SAIJ80BX250-30S
The AirTAC SAIJ80X250-30-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end position without adding external stops. With a nominal 250 mm stroke and a 30 mm adjustment range, it provides a usable travel window of 220-250 mm.
This variant is equipped with a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel includes sensor grooves on both sides, and the G3/8 PT ports handle pneumatic flow efficiently. It utilizes a variable air cushion at both ends to decelerate the moving load smoothly.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX250-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX250-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 250 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 SAIJ80BX250-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×250 | 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 SAIJ80BX250-30S Is Used
Machine Changeover
Quickly adjust the stroke window from 250 mm down to 220 mm during product size transitions on a packaging line without replacing the cylinder.
End-Position Tuning
Fine-tune the retract end-position at commissioning to dial in exact mechanical stops, eliminating the need to add external spacers.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX250-30S the Right Cylinder?
The adjustable stroke is ideal for machine setup and product changeover, allowing you to dial in the exact end position during commissioning rather than machining custom spacers or swapping to a fixed-stroke SAI cylinder.
Because the nominal stroke is 250 mm, you should ensure proper external guiding to prevent excessive side loading on the 25 mm rod. Remember that the rear adjuster acts as a mechanical stop to set the travel end, not a lock; the cylinder will not hold its load without live air pressure. For true fail-safe load holding, consider the SAIL or BSAI series. This model is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ80BX250-30S FAQ
It can reach a maximum thrust of 513 kgf at 1.0 MPa.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke by up to 30 mm. This creates a usable travel window of 220-250 mm, allowing you to fine-tune the end position without swapping the cylinder.
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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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