Airtac SAIJ200 Adjustable Cylinder SAIJ200AX950-20
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX950-20 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 SAIJ200AX950-20
The AirTAC SAIJ200X950-20 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty applications requiring exact end-position tuning. It features a nominal 950 mm stroke with a rear mechanical adjuster that allows you to trim the effective travel back by up to 20 mm, creating a precise 930-950 mm usable window. Delivering a massive 28274 N of push force at 0.9 MPa, this unit handles substantial loads. The rod is constructed from SUS420J2 stainless steel for enhanced corrosion resistance, and the body uses an extruded aluminum barrel with sensor grooves on both sides.
This model operates at speeds of 30-500 mm/s and utilizes PT tapered port threads sized at G3/4. The rear adjuster functions strictly as a travel stop to fine-tune the retract position during commissioning or product changeover without swapping the cylinder. It is not a locking mechanism. For applications requiring the load to be held without continuous air pressure, a separate SAIL or BSAI cylinder should be specified.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX950-20 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX950-20 |
|---|---|
| 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 SAIJ200AX950-20
| 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 SAIJ200AX950-20 Is Used
Heavy Press Tuning
Fine-tune the 930-950 mm travel window during commissioning to ensure exact bottoming force on large industrial presses without adding external stop blocks.
Pallet Positioning
Adjust the retract position by up to 20 mm on the fly to accommodate varying pallet sizes on a heavy-duty transfer line.
Large Assembly Jigs
Dial in the exact end-stop for massive 28274 N push operations, ensuring repeatable alignment for oversized structural components.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX950-20 the Right Cylinder?
Selecting this 200 mm bore model is appropriate when your application demands up to 3204 kgf of maximum thrust at 1.0 MPa. If your force requirements are lower, stepping down to a 160 mm bore provides 18095 N at 0.9 MPa, which may offer a lighter footprint. The primary advantage of the SAIJ series over a fixed-stroke SAI cylinder is the external adjustment screw, which allows you to dial in the exact end-of-stroke position mechanically during setup. When replacing an ISO 15552 cylinder, match the 200 mm bore, 950 mm stroke, 20 mm adjustment range, G3/4 PT ports, and the SUS420J2 rod material.
Because this cylinder features a 950 mm stroke, the long unsupported piston rod is highly susceptible to side-loading and deflection. An external guide rail or linear bearing must be used to prevent premature seal wear and binding. The available mounting options are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and 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 SAIJ200AX950-20 FAQ
At an operating pressure of 0.9 MPa, this 200 mm bore cylinder generates 28274 N of push force and 22680 N of pull force. The maximum thrust is 3204 kgf at 1.0 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 950 mm nominal stroke by up to 20 mm, providing a usable travel window of 930-950 mm. It decelerates the end position but does not lock or hold the load without live air pressure.
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