Airtac SAIJ200 Adjustable Cylinder SAIJ200AX375-100S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX375-100S 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 a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ200 mm
- Stroke375 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX375-100S
The AirTAC SAIJ200X375-100-S is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty applications. It integrates a rear mechanical stopper that allows you to dial back the nominal 375mm stroke by up to 100mm, creating a precise 275-375mm usable travel window for exact end-position tuning. Delivering 15708N of push force at 0.5 MPa, this 200mm bore actuator handles massive loads with ease. The extruded aluminum barrel features sensor grooves on both sides, and this specific configuration includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic solid-state switches.
This model is built with a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and utilizes PT tapered port threads (G3/4). The robust 40mm rod and M36x2 thread provide excellent structural integrity against side loads, though at 375mm of travel, an external guide is still recommended for unsupported heavy masses. The variable air cushions at both ends absorb kinetic energy, but the rear adjuster acts only as a travel stop—it does not hold the load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX375-100S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX375-100S |
|---|---|
| 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 | 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 SAIJ200AX375-100S
| 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 SAIJ200AX375-100S Is Used
Heavy Press Tuning
Fine-tune the exact bottoming position of a high-tonnage press during setup. The 100mm adjustment window lets operators dial in the 375mm stroke to accommodate different material thicknesses without changing the tooling actuators.
Product Changeover Systems
Adapt automated heavy machinery to new product dimensions on the fly. The rear stopper allows quick mechanical end-position adjustments across the 275-375mm travel range during line changeovers.
Large Clamp Positioning
Secure massive workpieces in heavy industrial clamps. The 200mm bore provides 15708N of clamping force at 0.5 MPa, while the adjustable stopper ensures the clamp reaches the exact required depth every time.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX375-100S the Right Cylinder?
Choose this 200mm bore actuator when your application requires up to 15708N of push force at 0.5 MPa (or 21991N at 0.7 MPa). If your force requirements are lower, stepping down to a 160mm bore yields 10053N at 0.5 MPa, while maintaining the same ISO 15552 mounting interface. The adjustable stroke is ideal for machine setups requiring variable end stops or product-size changeovers, allowing you to fine-tune the travel limit at commissioning without swapping the cylinder or bolting on external stops. For load-holding without continuous air pressure, you must integrate an external rod lock, pilot-operated check valve, or switch to an AirTAC SAIL or BSAI clamp-lock variant, as the SAIJ adjuster is not a locking mechanism.
When replacing an ISO 15552 cylinder, match the 200mm bore, 375mm nominal stroke, 100mm adjustment range, PT G3/4 port threads, and the -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. Because the stroke is 375mm, always use an external guide rail to prevent excessive side-load wear on the piston rod seals, despite the heavy-duty 40mm rod diameter.
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 SAIJ200AX375-100S FAQ
At 0.5 MPa operating pressure, this 200mm bore cylinder provides 15708N of push force and 15080N of pull force. At 0.7 MPa, the push force increases to 21991N.
The rear adjusting screw acts as a mechanical stopper, allowing you to shorten the effective travel from the nominal 375mm down to as little as 275mm. This creates a 275-375mm usable stroke window for fine-tuning end positions at commissioning, but it does not lock the load without live air pressure.
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