Airtac SAIJ200 Adjustable Cylinder SAIJ200X25-20S
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X25-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 25mm 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
- Stroke25 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 SAIJ200X25-20S
The AirTAC SAIJ200X25-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated -S magnet operates seamlessly with AirTAC CMSE reed and DMSE electronic solid-state switches.
This model utilizes a substantial 40mm carbon steel rod and a G3/4 PT tapered port to handle high flow demands. The rear adjuster functions strictly as a mechanical stop to set the travel limit, meaning it will not hold a load without continuous live air pressure. For load-holding requirements, consider an external rod lock or the AirTAC SAIL series. Variable air cushions at both ends absorb the kinetic energy of this massive bore, and the mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X25-20S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X25-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 25 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 SAIJ200X25-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×25 | 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 SAIJ200X25-20S Is Used
Short-Stroke Pressing
Delivers up to 3204 kgf at 1.0 MPa for heavy pressing, with the 5-25mm travel window allowing precise bottom-out tuning for delicate assemblies.
Machine Changeover
Quickly adjust the rear stopper by up to 20mm to accommodate varying product thicknesses on the line without changing out the entire cylinder.
Heavy Duty Clamping
Provides immense holding power during machining operations, utilizing the 40mm carbon steel rod to withstand significant side loads while clamping.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X25-20S the Right Cylinder?
The adjustable stroke is ideal for short-stroke pressing or clamping tasks where the exact end position needs micro-tuning during commissioning or product changeover, rather than relying on a fixed-stroke SAI cylinder.
When replacing an ISO 15552 cylinder, match the 200mm bore, 25mm stroke, 20mm adjustment range, G3/4 PT port threads, and the -S magnet requirement. Because the 40mm rod handles high side loads well, it is robust for pressing applications, but always ensure the load is guided externally to prevent binding. Operating speed for this bore is rated at 30-500 mm/s.
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 SAIJ200X25-20S FAQ
At its maximum operating pressure of 1.0 MPa, it can deliver a peak push force of 3204 kgf.
The rear adjuster acts as a mechanical stop that allows you to trim the nominal 25mm stroke back by up to 20mm, creating a usable travel window of 5 to 25mm. Note that this adjuster is a stop, not a lock, and the cylinder requires live air to maintain its position.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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