Airtac SAIJ80 Adjustable Cylinder SAIJ80X85-50
The AirTAC Airtac SAIJ80 Adjustable Cylinder SAIJ80X85-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø80mm bore and 85mm 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
- Stroke85 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 SAIJ80X85-50
The AirTAC SAIJ80X85-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 35 to 85 mm, allowing you to dial back the nominal 85 mm stroke by up to 50 mm. This bore delivers 2513 N of push force and 2268 N of pull force at 0.5 MPa, making it suited for medium to heavy-duty positioning tasks.
It uses a G3/8 port and a 25 mm carbon steel rod with an M20x1.5 thread, offering robust resistance to side loading. The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed or DMSE electronic switches. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR brackets.
Airtac SAIJ80 Adjustable Cylinder SAIJ80X85-50 Technical Specifications
| Model | Airtac SAIJ80 Adjustable Cylinder SAIJ80X85-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø80 mm |
| Stroke | 85 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 SAIJ80X85-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×85 | 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 SAIJ80X85-50 Is Used
Adjustable End-Positioning
Dial in the exact retract distance within the 35-85 mm window during machine commissioning without adding external stopper blocks.
Product Size Changeover
Quickly adapt the cylinder's effective travel to accommodate different product lengths on a packaging line.
Assembly Pressing
Leverage the 2513 N push force to seat components while fine-tuning the final press depth mechanically.
Is the Airtac SAIJ80 Adjustable Cylinder SAIJ80X85-50 the Right Cylinder?
Choose this 80 mm bore if you need more force than the 50 mm option (982 N push at 0.5 MPa) but less bulk than the 100 mm class (3927 N). An adjustable stroke is ideal when you need a variable end-stop for product changeovers rather than a fixed-length SAI cylinder. The rear adjuster acts strictly as a travel stop and cannot hold a load without live air pressure; for true load-holding, consider an SAIL or BSAI cylinder. To replace an ISO 15552 unit, match the 85 mm stroke, 50 mm adjustment, PT tapered port, and your required mounting bracket.
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 SAIJ80X85-50 FAQ
At 0.5 MPa, this 80 mm bore cylinder provides 2513 N of push force and 2268 N of pull force. It can reach up to 4523 N push force at 0.9 MPa.
The rear adjuster screw lets you mechanically shorten the effective travel from 85 mm down to 35 mm. It functions as a hard stop to set the end position and does not lock or hold the load without continuous air pressure.
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1-Year Warranty
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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Most inquiries answered within 7-8 hours.
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