Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-50S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 70mm 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
- Stroke70 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-50S
The AirTAC SAIJ200X70-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 20-70 mm usable travel window from its 70 mm nominal stroke. It delivers massive thrust, pushing 15708 N and pulling 15080 N at 0.5 MPa, making it suited for heavy-duty positioning. The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed and DMSE electronic switches.
This specific SKU is built with a SUS420J2 stainless steel rod for superior corrosion resistance and uses PT tapered port threads (G3/4). The rear adjuster acts strictly as a mechanical stop to fine-tune the retract end position during commissioning without swapping components; it does not hold the load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-50S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 70 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 SAIJ200AX70-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×70 | 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 SAIJ200AX70-50S Is Used
Heavy Press Fine-Tuning
Dial in the exact 20-70 mm retract stop on a 15708 N press operation, allowing precise end-position tuning without machining new external stopper blocks.
Product Size Changeover
Quickly adapt a heavy-duty assembly line for new product dimensions by adjusting the rear screw up to 50 mm, minimizing downtime between production runs.
Variable End-Stop Positioning
Set custom retract distances on large automated machinery where a fixed 70 mm stroke is too rigid, leveraging the 200 mm bore's 15080 N pull force for reliable retraction.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-50S the Right Cylinder?
Choose this 200 mm bore when your application requires up to 15708 N of push force at 0.5 MPa and highly precise end-position tuning. If your setup only needs the 10053 N push force of the 160 mm bore, stepping down reduces air consumption and physical footprint. The 50 mm adjustment range is ideal for dialing in exact retract distances during product changeovers.
For load-holding without continuous air pressure, this cylinder is insufficient—the rear adjuster and air cushions only decelerate travel, they do not lock the load. You would need to specify an external pilot-operated check valve or use a related AirTAC type like the SAIL (air-released lock) or BSAI (clamp-lock). To match this exact ISO 15552 replacement, specify: 200 mm bore, 70 mm stroke, 50 mm adjustment, PT G3/4 ports, SUS420J2 rod, -S magnet, and the SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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 SAIJ200AX70-50S FAQ
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 3204 kgf.
The rear adjuster screw allows you to shorten the effective stroke by up to 50 mm from the 70 mm nominal stroke, creating a 20-70 mm usable travel window. It functions as a mechanical stop for end-position tuning and does not lock the load without live air pressure.
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