Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 85mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke85 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-20
The AirTAC SAIJ100X85-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 65 to 85 mm, allowing you to shorten the effective stroke by up to 20 mm without swapping hardware. In this 100 mm bore configuration, it delivers a robust 3927 N of push force and 3681 N of pull force at 0.5 MPa operating pressure.
The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic sensors. The carbon steel piston rod features an M20x1.5 thread, and the cylinder uses a PT tapered G1/2 port. The rear adjuster acts purely as a mechanical stop to fine-tune the end position, meaning it will not hold a load dynamically without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 85 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | 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 SAIJ100 Adjustable Cylinder SAIJ100X85-20 Is Used
Machine Setup Changeover
Dial in the exact 65 to 85 mm end-stop during machine setup for new product runs, enabling rapid size changeovers without disassembling the line.
Variable End-Position Clamping
Fine-tune the clamping travel on the fly to accommodate varying workpiece thicknesses, using the 20 mm adjustment range to prevent over-travel.
Assembly Line Positioning
Provides a hefty 3927 N of push force at 0.5 MPa to move heavy assemblies, while the rear screw allows operators to trim the stroke precisely to the fixture.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-20 the Right Cylinder?
Choose this adjustable-stroke model when your application requires exact end-position tuning during commissioning or product changeover, avoiding the need to bolt on external stops. If your process needs less force, stepping down to an 80 mm bore yields 2513 N of push force at 0.5 MPa. For higher dynamics, the 100 mm bore operates at speeds between 30-800 mm/s.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 85 mm nominal stroke, 20 mm adjustment range, PT G1/2 port, and your required mounting style. The SAIJ series supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, deliberately omitting FB, CA, CB, and CR options. Because the rear adjuster is a stop and not a lock, select a SAIL or BSAI cylinder if your system requires true load-holding without continuous air pressure.
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 SAIJ100 Adjustable Cylinder SAIJ100X85-20 FAQ
At a standard 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. It can reach up to 7068 N of push force at 0.9 MPa.
The rear adjuster acts as a mechanical stop that lets you shorten the 85 mm nominal stroke by up to 20 mm, creating a usable travel window of 65 to 85 mm. It only sets the travel end and does not lock the load without live air pressure.
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