Airtac SAIJ200 Adjustable Cylinder SAIJ200X400-75
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X400-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 400mm 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
- Stroke400 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 SAIJ200X400-75
The AirTAC SAIJ200X400-75 is a double-acting, double-rod ISO 15552 profile cylinder engineered for heavy-duty applications requiring exact end-position tuning. Equipped with a rear adjusting screw, this model allows you to dial back the 400 mm nominal stroke by up to 75 mm, creating a precise 325-400 mm usable travel window without swapping out the unit.
Built with a robust 40 mm carbon steel rod and M36x2 rod threading, this cylinder handles substantial side loads, though its 400 mm stroke still necessitates an external guide to prevent rod deflection. The extruded aluminum barrel features sensor grooves on both sides for mounting position detectors. This adjustable variant utilizes a reduced mounting subset—Basic, FA, LB, TC, FTC, TCM1, and TCM2—omitting the FB, CA, CB, and CR options to accommodate the rear stopper mechanism.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X400-75 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X400-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 400 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 SAIJ200X400-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×400 | 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 SAIJ200X400-75 Is Used
Heavy Press Tuning
Fine-tune the 325-400 mm retract position on large metal stamping presses during die changes, ensuring precise bottom-dead-center alignment without external mechanical stops.
Pallet Positioning
Adjust the end-stop on a heavy-duty pallet handling line to accommodate different pallet depths, using the 75 mm adjustment range to dial in the exact push-back distance.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X400-75 the Right Cylinder?
Selecting the SAIJ200X400-75 is ideal when a machine undergoes frequent product changeovers that require shifting the retract position within a 325 to 400 mm range, eliminating the need to bolt on external stops or buy multiple fixed-stroke SAI cylinders.
When replacing an ISO 15552 cylinder, match the 200 mm bore, 400 mm stroke, PT G3/4 tapered port threads, and the specific 75 mm adjustment range. Because this is a standard configuration without a magnet (-S omitted), position sensing requires external methods rather than AirTAC CMSE or DMSE switches. Crucially, the rear adjuster acts solely as a travel stop and the air cushions provide deceleration; neither will hold a load without live air pressure. For true fail-safe load holding, consider the SAIL or BSAI series.
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 SAIJ200X400-75 FAQ
The rear adjusting screw acts as an external stopper that lets you shorten the effective stroke by up to 75 mm. This transforms the 400 mm nominal stroke into a usable 325-400 mm travel window, allowing you to fine-tune the end position at commissioning. The adjuster only sets the travel end and does not lock or hold the load without continuous air pressure.
At its maximum operating pressure of 1.0 MPa, it delivers 3204 kgf. The operational speed range for this 200 mm bore size is 30-500 mm/s.
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