Airtac SAIJ80 Adjustable Cylinder SAIJ80BX950-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80BX950-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 950mm 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
- Stroke950 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX950-50
The AirTAC SAIJ80X950-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits up to 50 mm of travel reduction. This yields a usable working window of 900-950 mm, allowing you to dial in the exact retract position at commissioning without adding external stopper blocks. Equipped with a SUS304 stainless steel rod and PT tapered port threads, it delivers a robust 4523 N of push force at 0.9 MPa.
Because the 950 mm stroke is long, the 25 mm rod diameter and M20x1.5 rod thread provide substantial rigidity, though an external guide rail is still recommended to manage side loads over this extended travel. The extruded aluminum barrel includes sensor grooves on both sides for mounting CMSE reed or DMSE electronic switches, and the mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ80 Adjustable Cylinder SAIJ80BX950-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80BX950-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 950 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 SAIJ80BX950-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×950 | 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 SAIJ80BX950-50 Is Used
Variable Length Diverter
Fine-tune the retract distance from 900 to 950 mm on a packaging line to accurately divert boxes of varying widths without changing out the entire actuator assembly.
Machine Commissioning Setup
Dial in the exact end-of-stroke position during initial machine setup to compensate for mechanical tolerance stack-up, ensuring precise alignment without external shims.
Long-Stroke Press Operation
Leverage the 4523 N push force across a 950 mm travel window to form or press components at a precise, adjustable end position in heavy-duty fabrication stations.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80BX950-50 the Right Cylinder?
Choose this 80 mm bore when an application requires heavy thrust—such as 4523 N at 0.9 MPa—exceeding the 2805 N push capacity of a 63 mm bore, but without needing the 7068 N force of a 100 mm unit. The adjustable 900-950 mm stroke is ideal for machinery that processes varying product lengths, letting operators fine-tune the end position during changeovers rather than physically swapping the cylinder for a fixed-stroke SAI model.
For any stroke of 950 mm, ensuring proper structural support is critical; always pair this cylinder with an external linear guide to prevent rod binding. Remember that the rear adjuster functions strictly as a travel stop and cannot hold a load without live air pressure—if load-holding is required for safety, explore the SAIL pneumatic lock or BSAI clamp-lock series instead. This unit is dimensionally interchangeable per ISO 15552.
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 SAIJ80BX950-50 FAQ
At an operating pressure of 0.9 MPa, this 80 mm bore cylinder generates 4523 N of push force and 4071 N of pull force. It can deliver a maximum thrust of 513 kgf at 1.0 MPa.
A rear-mounted adjusting screw acts as a mechanical stopper, allowing you to shorten the nominal 950 mm stroke by up to 50 mm. This creates a usable travel window between 900 and 950 mm, which can be fine-tuned during commissioning without replacing the cylinder.
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