Airtac SAIJ200 Adjustable Cylinder SAIJ200AX950-50S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX950-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 950mm 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
- Stroke950 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX950-50S
The AirTAC SAIJ200X950-50-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty operations, delivering a substantial push force of 15708 N at 0.5 MPa. It features a robust 40 mm piston rod made from SUS420J2 stainless steel (code A) and PT tapered port threads. Equipped with a magnet (-S), it seamlessly integrates with CMSE reed and DMSE electronic solid-state sensors for precise position feedback.
This model incorporates a rear stroke adjuster that allows you to fine-tune the effective travel window down from its 950 mm nominal stroke to a minimum of 900 mm, providing a 50 mm adjustment range. This built-in stopper mechanism lets you dial in the exact end-position during commissioning without swapping out the cylinder or adding external physical stops. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX950-50S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX950-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 950 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 SAIJ200AX950-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×950 | 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 SAIJ200AX950-50S Is Used
Heavy Machinery Changeover
Dial in the 900-950 mm travel window during equipment setup to accommodate different large-scale product dimensions without replacing the actuator.
Press End-Stop Tuning
Fine-tune the retraction end-position on heavy metal forming presses, using the rear screw to precisely set the 50 mm adjustment margin for tooling clearance.
Large Assembly Positioning
Move massive structural components into alignment, relying on the 15708 N push force while making minute end-position corrections at commissioning.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX950-50S the Right Cylinder?
Select this 200 mm bore cylinder when your application demands extreme thrust capacity, requiring significantly more power than the 160 mm bore variant which offers 10053 N push force at 0.5 MPa. The 50 mm adjustable stroke range is highly advantageous in large-scale machinery where you need to vary the end-stop for product changeovers or fine-tune the retraction distance on the fly, avoiding the rigid travel constraints of a fixed-stroke SAI cylinder.
Because the nominal stroke is 950 mm, the long unsupported piston rod is susceptible to side-loading and sagging; an external guide mechanism is strongly recommended to prevent premature seal wear. Remember that the rear adjuster functions strictly as a travel stop and the air cushions only decelerate the piston, neither of which will hold a load in place without live air pressure. For true load-holding requirements without continuous air supply, consider the SAIL (pneumatic lock) or BSAI (clamp-lock) series. This SAIJ model uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR brackets.
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 SAIJ200AX950-50S FAQ
At an operating pressure of 0.5 MPa, this 200 mm bore cylinder generates a push force of 15708 N and a pull force of 15080 N. At the maximum pressure of 1.0 MPa, it can deliver up to 3204 kgf of push force.
The rear adjuster acts as an external stopper that allows you to shorten the effective stroke from 950 mm down to 900 mm. This provides a 50 mm tuning window to set the exact retract end-position during commissioning, but it does not lock the load without live air pressure.
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