Airtac SAIJ200 Adjustable Cylinder SAIJ200X375-20
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X375-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 375mm 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
- Stroke375 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 SAIJ200X375-20
The AirTAC SAIJ200X375-20 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty applications, featuring a robust 200mm bore and a 375mm stroke. The integrated rear stroke adjuster allows you to fine-tune the effective travel, creating a precise 355-375mm usable window without requiring physical cylinder swaps. This extruded aluminum body includes sensor grooves on both sides, although a magnet is not specified for this configuration.
Because the stroke extends to 375mm, the 40mm rod diameter plays a critical role in managing side loads, though an external guide remains essential for unsupported lengths. The rear adjuster functions strictly as a travel stop for end-position tuning, not as a locking mechanism. For load-holding without live air pressure, you would need to integrate an external rod lock or select a related type like the SAIL or BSAI. This model supports a speed range of 30-500 mm/s and uses a 50mm variable air cushion at both ends to decelerate heavy masses smoothly.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X375-20 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X375-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 375 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 SAIJ200X375-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×375 | 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 SAIJ200X375-20 Is Used
Heavy Press Tuning
Dial in the exact 355-375mm end-stop during heavy press commissioning to accommodate material thickness variances without swapping out the entire cylinder assembly.
Product Changeover
Adjust the rear stopper by up to 20mm on a packaging line to handle slightly different product lengths quickly, minimizing machine downtime between production runs.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X375-20 the Right Cylinder?
If your force requirements are lower, stepping down to a 160mm bore yields 10053N at 0.5 MPa, which may save space and air consumption. The SAIJ200X375-20 is specifically selected over a fixed-stroke SAI when the final end-position needs on-machine commissioning flexibility. By dialing back the stroke by up to 20mm, you accommodate product changeovers or mechanical variances directly at the fixture.
As an ISO 15552 interchangeable cylinder, replacing an existing unit requires matching the 200mm bore, 375mm stroke, 20mm adjustment range, G3/4 PT port thread, and carbon steel rod material. Note that this SKU does not include a magnet (-S), so it will not work with CMSE or DMSE sensors without modification. The SAIJ mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options. Given the 375mm stroke, always ensure proper external guiding to prevent excessive side-loading on the rod.
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 SAIJ200X375-20 FAQ
At 0.7 MPa, the push force increases to 21991N.
The rear adjuster acts as a mechanical stop that allows you to shorten the nominal 375mm stroke by up to 20mm, providing a usable travel window of 355-375mm. It sets the end position but does not lock the load without live air pressure.
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