Airtac SAIJ200 Adjustable Cylinder SAIJ200X650-20S
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X650-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 650mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ200 mm
- Stroke650 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 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 SAIJ200 Adjustable Cylinder SAIJ200X650-20S
The AirTAC SAIJ200X650-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to fine-tune the effective travel within a 630 to 650 mm window. The extruded aluminum barrel features sensor grooves on both sides, and this -S variant includes a magnet for direct switching with AirTAC CMSE reed and DMSE electronic sensors.
The 40 mm carbon steel piston rod utilizes an M36x2 thread, providing a robust interface for high-load attachments. Because the nominal 650 mm stroke is long, the unsupported rod length requires an external guide to prevent excessive side-loading and premature seal wear. The rear adjuster functions strictly as a travel stop for end-position tuning, not a load-holding lock.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X650-20S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X650-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 650 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 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 (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15080 N | 15080 N |
| 0.7 MPa | 21111 N | — |
| Max (@1.0 MPa) | 3075 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 SAIJ200 Adjustable Cylinder SAIJ200X650-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×650 | 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 SAIJ200 Adjustable Cylinder SAIJ200X650-20S Is Used
Heavy Machinery Setup
Fine-tunes the 630-650 mm travel window during heavy equipment assembly, ensuring massive components align perfectly without external stopper fabrication.
Product Line Changeover
Allows operators to quickly adjust the end-stop position on a 200 mm bore cylinder when transitioning a production line between different large product sizes.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X650-20S the Right Cylinder?
The adjustable-stroke feature is chosen over a fixed SAI cylinder when you need to dial in the exact end-of-stroke position during machine commissioning or product changeover without adding external mechanical stops. It operates at speeds of 30-500 mm/s.
For load-holding without continuous live air pressure, this plain SAIJ cylinder is insufficient because the rear adjuster and air cushions only decelerate the travel end; they do not brake or hold the load. In such cases, specify a SAIL air-released lock or BSAI clamp-lock cylinder instead. This SAIJ200X650-20-S model is dimensionally interchangeable per ISO 15552 and includes PT tapered ports, a standard mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), and a magnet for CMSE/DMSE sensors.
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 SAIJ200 Adjustable Cylinder SAIJ200X650-20S FAQ
The rear adjusting screw acts as an external stopper that lets you shorten the 650 mm nominal stroke by up to 20 mm, providing a usable travel window of 630 to 650 mm. It is used for fine-tuning end positions at commissioning and is a travel stop, not a lock.
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Related AirTAC SAI Cylinders
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