Airtac SAIJ200 Adjustable Cylinder SAIJ200AX50-20S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX50-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 50mm 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
- Stroke50 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX50-20S
The AirTAC SAIJ200X50-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 15708 N push force at 0.5 MPa and uses a SUS420J2 stainless steel rod. The built-in rear stopper screw allows you to fine-tune the retract end position, creating a 30-50 mm usable travel window from the 50 mm nominal stroke without adding external stops.
This 200 mm bore model includes a magnet for CMSE reed and DMSE electronic sensors. It operates at 30-500 mm/s and uses PT tapered G3/4 ports. The rear adjuster acts purely as a travel stop for end-position tuning and does not hold the load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX50-20S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX50-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 50 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 SAIJ200AX50-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×50 | 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 SAIJ200AX50-20S Is Used
Precision End-Stop Tuning
Dial in the exact retract position within the 30-50 mm travel window during machine commissioning without machining external stop collars.
Product Size Changeovers
Quickly adapt the cylinder's effective stroke on the line when switching to a new product size, saving changeover time.
Heavy Forming Press
Leverage the 15708 N push force at 0.5 MPa for heavy pressing operations while fine-tuning the bottom dead center.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX50-20S the Right Cylinder?
Choose this 200 mm bore cylinder when your application requires massive thrust, such as 15708 N push at 0.5 MPa, combined with precise end-stop tuning. If you need less force, stepping down to a 160 mm bore yields 10053 N push. The adjustable stroke is ideal for machine setup and product changeovers, allowing you to dial in the exact 30-50 mm travel window on the fly instead of swapping a fixed-stroke SAI cylinder. For load-holding without continuous air, use an external rod lock or pilot-operated check valve, as this adjuster is not a brake. To match this ISO 15552 replacement, specify 200 mm bore, 50 mm stroke, 20 mm adjustment, PT G3/4 port, and the -S magnet.
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 SAIJ200AX50-20S FAQ
At 0.5 MPa, this 200 mm bore cylinder provides a push force of 15708 N and a pull force of 15080 N. It can reach a maximum push force of 21991 N at 0.7 MPa.
A rear stopper screw lets you mechanically trim the retract stroke by up to 20 mm. This turns the 50 mm nominal stroke into an adjustable 30-50 mm travel window for precise end-position tuning. The adjuster is a stop, not a lock.
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