Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-40S
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 260mm 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
- Stroke260 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-40S
The AirTAC SAIJ80X260-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 2513N of push force at 0.5MPa, utilizing a 25mm carbon steel rod and G3/8 PT ports. By integrating a -S magnet, this unit supports electronic DMSE and reed CMSE switches housed within the dual-side sensor grooves.
This model features a 260mm nominal stroke that can be fine-tuned down by up to 40mm, creating a usable travel window of 220-260mm. The rear adjuster acts purely as a mechanical stop to dial in the retract end position during commissioning without requiring external stops. It is not a locking mechanism, so load holding without live air requires a SAIL or BSAI variant.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-40S Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 260 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 SAIJ80X260-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×260 | 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 SAIJ80X260-40S Is Used
Variable End-Stop Machining
Dial in the 220-260mm retract position precisely for machining operations that require slight positional shifts without reprogramming the machine.
Product Changeover
Quickly adjust the stroke by up to 40mm during production line changeovers to accommodate different product sizes efficiently.
Assembly Line Tuning
Fine-tune the end-of-travel position during initial commissioning to perfect the pressing force of assembly actuators on the fly.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X260-40S the Right Cylinder?
Choose this 80mm bore when an application demands higher thrust than a 63mm cylinder (1559N at 0.5MPa) but without the bulk of a 100mm unit. The adjustable 220-260mm window is perfect for product changeovers, allowing operators to set variable end-stops on the fly instead of physically swapping out a fixed-stroke SAI cylinder. To match this exact replacement, specify the 260mm stroke, 40mm adjust code, PT port thread, and the -S magnet option.
Because the 260mm stroke is substantial, the 25mm rod and M20x1.5 thread provide rigidity, but an external guide is still recommended to prevent excessive side-loading on the piston. Mounting options are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2. The standard variable air cushions at both ends decelerate the load, but they do not brake or hold the load pneumatically.
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 SAIJ80X260-40S FAQ
At 0.5MPa operating pressure, this 80mm bore cylinder provides 2513N of push force and 2268N of pull force. At 0.7MPa, the push force increases to 3518N.
The rear adjuster screw allows you to shorten the 260mm nominal stroke by up to 40mm, providing a usable travel window of 220-260mm. It functions as a mechanical stop for position tuning and is not a lock.
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