Airtac SAIJ200 Adjustable Cylinder SAIJ200AX650-50S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX650-50S 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ200 mm
- Stroke650 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX650-50S
The AirTAC SAIJ200X650-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a robust 15708N push force at 0.5 MPa, scaling up to 21991N at 0.7 MPa, making it suitable for heavy-duty positioning. The integrated adjuster allows you to fine-tune the effective travel down from the 650mm nominal stroke to a 600mm minimum, creating a precise 600-650mm usable window without adding external stops. This specific configuration features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes a magnet for electronic DMSE or reed CMSE sensors housed in the dual-side barrel grooves.
Because the adjuster acts purely as a mechanical stop, it does not hold the load without live air pressure. For fail-safe load holding, you would need a separate SAIL pneumatic lock or BSAI clamp-lock cylinder. The generous 40mm rod diameter and M36x2 thread provide high rigidity against side loads, which is critical for a 650mm stroke. It uses a PT tapered port and offers variable air cushions at both ends to manage end-of-stroke deceleration.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX650-50S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX650-50S |
|---|---|
| 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 | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ200 Adjustable Cylinder SAIJ200AX650-50S
| 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 SAIJ200AX650-50S Is Used
Heavy Press Changeover
Dial in the 600-650mm stroke window during product family transitions to set precise press depths without physically swapping the cylinder or adding external mechanical stops.
Pallet Positioning Stops
Use the heavy 15708N push force to halt large pallets, adjusting the rear stopper by up to 50mm to accommodate varying pallet lengths on the fly.
Large Assembly Fixturing
Fine-tune the end-of-stroke position during machine setup to ensure massive components mate perfectly, relying on the 40mm rod to resist deflection under load.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX650-50S the Right Cylinder?
Selecting this 200mm bore model is appropriate when your application demands maximum thrust, such as 15708N at 0.5MPa, stepping up from a 160mm bore that yields 10053N. An adjustable stroke is chosen over a fixed SAI cylinder when you need to dial in the exact end position during machine commissioning or accommodate product-size changeovers directly at the rear stopper. When matching ISO 15552 interchangeability, ensure you specify the 200mm bore, 650mm stroke, 50mm adjustment, PT ports, and the -S magnet option.
For a 650mm stroke, the long unsupported piston rod is highly susceptible to bending under side loads. Despite the rigid 40mm rod, you must incorporate an external guide rail to prevent premature seal wear and cylinder damage. Additionally, the SAIJ mounting set is restricted to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options found on other variants.
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 SAIJ200AX650-50S FAQ
At 0.5 MPa operating pressure, this 200mm bore cylinder provides 15708N of push force and 15080N of pull force. At 0.7 MPa, the push force increases to 21991N.
The rear adjuster screw lets you shorten the 650mm nominal stroke by up to 50mm, providing a usable travel window between 600mm and 650mm. It functions as a mechanical stop for position tuning and does not lock the load without live air pressure.
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