Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-50 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 SAIJ100X85-50
The AirTAC SAIJ100X85-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It delivers substantial thrust, providing 5497N push force at 0.7MPa, making it suitable for heavy-duty positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
Equipped with a 50mm adjustment range, this model transforms its 85mm nominal stroke into a highly versatile 35-85mm usable travel window. This built-in stopper allows you to fine-tune the retract end-position during commissioning without adding external stops. The carbon steel rod and M20x1.5 thread provide robust resistance against side loads, while the PT tapered port ensures a secure, leak-free pneumatic connection.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-50 |
|---|---|
| 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 SAIJ100X85-50
| 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 SAIJ100X85-50 Is Used
Product Changeovers
Dial in the 35-85mm travel window during format changes to accommodate different product sizes without physically replacing the cylinder.
Heavy-Duty Positioning
Leverage the 5497N push force at 0.7MPa to move and position heavy pallets or fixtures accurately to a tuned mechanical stop.
Machine Setup
Fine-tune the retract end-position at commissioning to perfect tooling clearances, avoiding the need to bolt on external stopper blocks.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X85-50 the Right Cylinder?
Choose this 100mm bore when you need higher force than a neighboring 80mm cylinder (which provides 3518N push at 0.7MPa) but want to avoid the bulk of a 125mm unit. The adjustable 35-85mm travel window is ideal for product-size changeovers on a line, allowing operators to dial in the exact end-stop mechanically rather than swapping out a fixed-stroke SAI cylinder. For applications requiring the cylinder to hold a load without continuous live air pressure, note that the rear adjuster acts only as a travel stop and not a lock; consider an AirTAC SAIL or BSAI cylinder for positive load-holding.
When replacing an ISO 15552 cylinder, match the 100mm bore, 85mm stroke, 50mm adjustment, PT port thread, and desired mounting accessory. SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
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 SAIJ100X85-50 FAQ
At 0.7MPa operating pressure, this 100mm bore cylinder provides a push force of 5497N and a pull force of 3681N. It can achieve a maximum push force of 7068N at 0.9MPa.
The rear adjuster acts as an external stopper that lets you shorten the effective stroke by up to 50mm. This turns the 85mm nominal stroke into a 35-85mm usable travel window, allowing precise end-position tuning without changing the cylinder.
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