Airtac SAIJ80 Adjustable Cylinder SAIJ80BX650-30S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX650-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 650mm 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
- Stroke650 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX650-30S
The AirTAC SAIJ80X650-30-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 620 to 650 mm usable travel window, allowing you to dial back the nominal 650 mm stroke by up to 30 mm during commissioning. Equipped with a SUS304 stainless steel rod and a -S magnet, it supports AirTAC CMSE reed and DMSE electronic sensors via the dual-side barrel grooves.
In the 80 mm bore class, this actuator generates 2513 N of push force and 2268 N of pull force at 0.5 MPa. The 25 mm rod and M20x1.5 thread provide robust resistance to side loading, though the extended 650 mm travel necessitates an external guide to prevent rod bending. The rear adjuster acts purely as a travel stop for end-position tuning and does not hold the load without live air pressure.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX650-30S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX650-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 650 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 SAIJ80BX650-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×650 | 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 SAIJ80BX650-30S Is Used
Variable End-Stop Tuning
Dial in the exact 620-650 mm end position during machine commissioning to accommodate varying product lengths without machining new hard stops.
Product Size Changeover
Quickly adjust the retract distance on packaging lines when switching between different package sizes, minimizing downtime and mechanical rework.
Extended Reach Automation
Utilize the 650 mm stroke for long-traverse material transfer tasks, relying on the SUS304 rod for durability in washdown or mildly corrosive environments.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX650-30S the Right Cylinder?
Choose this 80 mm bore model over the 63 mm class (1402 N pull at 0.5 MPa) when your application requires higher thrust, or step down to the 100 mm bore (3681 N pull) for even greater force. An adjustable stroke is ideal for product-size changeovers, letting you fine-tune the end stop without swapping the cylinder or adding external stops. For load-holding without continuous air pressure, select the SAIL or BSAI series instead, as the SAIJ rear screw is a stop, not a lock.
To match this ISO 15552 replacement exactly, specify: 80 mm bore, 650 mm nominal stroke, 30 mm adjustment range, PT tapered port threads, Basic/LB/TC/FA/FTC/TCM1/TCM2 mountings, and the -S magnet option. The 650 mm stroke exceeds typical short-fixture setups, so always incorporate an external linear guide to manage deflection.
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 SAIJ80BX650-30S FAQ
At 0.5 MPa operating pressure, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 4523 N of push force.
The rear adjuster screw allows you to shorten the effective travel from 650 mm down to 620 mm, creating a 30 mm adjustable window. This stopper fine-tunes the end position but does not lock or hold the load without live air pressure.
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