Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-10S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 125mm 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
- Stroke125 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-10S
The AirTAC SAIJ200X125-10-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers massive thrust, pushing with 21991N and pulling with 15080N at 0.7 MPa. The built-in rear stopper lets you trim the nominal 125 mm stroke back by up to 10 mm, creating a precise 115-125 mm usable travel window for exact end-position tuning during commissioning.
This unit features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, and the -S magnet option enables direct mounting of AirTAC CMSE reed and DMSE solid-state sensors. It supports the SAIJ mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-10S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 125 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 SAIJ200AX125-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×125 | 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 SAIJ200AX125-10S Is Used
Heavy Press Tuning
Dial in the exact 115-125 mm retract position on a heavy press without machining new hard stops, ensuring precise material deflection during final commissioning.
Product Changeover
Quickly adapt the end-of-stroke position on an assembly line when switching to a slightly shorter product variant, using the rear screw to absorb the 10 mm difference.
Large Clamp Adjustment
Regulate the clamping reach on large fixtures by adjusting the travel window, accommodating varying workpiece sizes while applying up to 28274N of force at 0.9 MPa.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX125-10S the Right Cylinder?
Choose this 200 mm bore when you need extreme force that smaller bores cannot provide, such as stepping up from a 160 mm bore that delivers 14074N push force at 0.7 MPa. The adjustable stroke is ideal for machine changeover, allowing you to fine-tune the retract end position without swapping the cylinder or adding external stops. Note that the rear adjuster acts purely as a travel stop and does not hold the load without live air; for true fail-safe load holding, select the SAIL (pneumatic lock) or BSAI (clamp-lock) series instead.
This model is dimensionally interchangeable per ISO 15552 and matches the exact configuration: 200 mm bore, 125 mm stroke, 10 mm adjustment, PT G3/4 port, SAIJ mounting set, and -S magnet. Because the stroke is under 300 mm, side-load risks are lower, though the heavy 40 mm rod and M36x2 thread still handle substantial lateral forces better than smaller 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 SAIJ200AX125-10S FAQ
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke by up to 10 mm, providing a usable travel window of 115-125 mm. It sets the end position and works alongside the adjustable air cushions, but it does not lock the load without continuous air pressure.
At 0.7 MPa, it delivers a push force of 21991N and a pull force of 15080N. At its maximum operating pressure of 1.0 MPa, the push force reaches 28274N, making it suitable for heavy-duty pressing and clamping.
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