Airtac SAIJ100 Adjustable Cylinder SAIJ100BX85-20S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100BX85-20S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ100 mm
- Stroke85 mm
- Port sizeG1/2
- 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 SAIJ100 Adjustable Cylinder SAIJ100BX85-20S
The AirTAC SAIJ100X85-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to dial back the 85 mm nominal travel by up to 20 mm. This yields a precise 65-85 mm usable end-position window at commissioning without swapping the hardware.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and pairs with PT tapered port threads. It includes a magnet (-S) for position sensing, supporting AirTAC CMSE reed and DMSE solid-state switches mounted in the dual-side sensor grooves. The rear adjuster acts purely as a travel stop and relies on the integrated air cushions for end-of-stroke deceleration; it does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX85-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX85-20S |
|---|---|
| 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100BX85-20S
| 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 SAIJ100BX85-20S Is Used
Product Changeovers
Dial in the 65-85 mm travel window on the rear stopper to accommodate varying package sizes on the fly without changing the cylinder.
Machine Setup Tuning
Fine-tune the end position during commissioning to perfect the stroke, eliminating the need to bolt on external physical stops.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX85-20S the Right Cylinder?
Choose the adjustable SAIJ over a fixed-stroke SAI when you need fine-tuning during machine setup or product changeovers rather than machining external stops.
To replace an ISO 15552 cylinder, match the 100 mm bore, 85 mm stroke, 20 mm adjustment range, PT G1/2 port, and the -S magnet. The SAIJ mounting set is restricted to Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, CR). For load-holding without live air, consider the SAIL (air-released lock) or BSAI (clamp-lock) instead of relying on the adjuster.
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 SAIJ100BX85-20S FAQ
At 0.7 MPa, the push force increases to 5497 N.
The rear adjuster screw lets you shorten the 85 mm nominal stroke by up to 20 mm, creating a 65-85 mm adjustable travel window. This stopper only sets the end position and decelerates the load; it does not lock or hold the load without continuous air pressure.
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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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