Airtac SAIJ100 Adjustable Cylinder SAIJ100AX850-50
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX850-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 850mm 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
- Stroke850 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 SAIJ100AX850-50
The AirTAC SAIJ100X850-50 is a double-acting, double-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 850 mm stroke that can be fine-tuned down by up to 50 mm, creating an exact 800 to 850 mm usable travel window for precise end-position calibration.
This variant is built with an SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and uses PT tapered port threads (G1/2). The extruded aluminum barrel includes sensor grooves on both sides, allowing you to add CMSE reed or DMSE electronic switches if position feedback is later required. The rear stopper sets the travel end but does not lock the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX850-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX850-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 850 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 SAIJ100AX850-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×850 | 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 SAIJ100AX850-50 Is Used
Large Part Machining
Dials in the 800-850 mm travel window during machine setup to accommodate varying lengths of large machined components without external stopper blocks.
Automated Assembly Lines
Handles long-stroke assembly presses, utilizing the M20x1.5 threaded rod for secure heavy-duty tooling mounting while fine-tuning the final end position.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX850-50 the Right Cylinder?
If you need less force, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa. The adjustable stroke prevents the need to swap cylinders when tuning machinery, unlike a fixed-stroke SAI model. To match this configuration for an ISO 15552 replacement, specify the 850 mm stroke, 50 mm adjustment, PT G1/2 port, and SUS420J2 rod material.
Because the 850 mm stroke is long and unsupported, an external guide is strongly recommended to manage side loads and prevent rod binding. For load-holding without continuous air pressure, note that this cylinder's rear adjuster acts only as a travel stop; you would need an external rod lock or a related SAIL pneumatic lock cylinder instead.
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 SAIJ100AX850-50 FAQ
At 0.7 MPa the push force is 5497 N, and at 0.9 MPa it reaches 7068 N.
The rear adjusting screw acts as a mechanical stopper, allowing you to shorten the 850 mm nominal stroke by up to 50 mm. This creates an adjustable travel window from 800 to 850 mm for fine-tuning at commissioning.
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Standard models are processed and dispatched in 3-5 business days.
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Related AirTAC SAI Cylinders
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