Airtac SAIJ200 Adjustable Cylinder SAIJ200BX450-75S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200BX450-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 450mm 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
- Stroke450 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 SAIJ200BX450-75S
The AirTAC SAIJ200X450-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering massive thrust up to 15708N at 0.5 MPa. Its defining feature is the 75mm adjustment range, which creates a highly flexible usable travel window between 375mm and 450mm. This allows operators to dial in exact retract end positions during commissioning or product changeovers without swapping out the entire actuator.
Built with a SUS304 stainless steel rod (option B) and a PT tapered port thread, this 200mm bore unit handles heavy-duty tasks while resisting corrosion. The extruded aluminum barrel features sensor grooves on both sides, and because this SKU includes the -S magnet, it directly supports AirTAC CMSE reed and DMSE electronic solid-state switches for precise position detection. It operates at speeds of 30-500 mm/s and relies on adjustable air cushions at both ends to decelerate large loads smoothly.
Airtac SAIJ200 Adjustable Cylinder SAIJ200BX450-75S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200BX450-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 450 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 SAIJ200BX450-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×450 | 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 SAIJ200BX450-75S Is Used
Heavy Press Tuning
Fine-tune the 375-450mm travel window during heavy press commissioning to achieve exact material forming depths without machining custom spacers.
Product Size Changeover
Quickly adapt automated heavy-duty lines for different product lengths by dialing the rear stopper back up to 75mm, minimizing machine downtime.
Large Assembly Positioning
Position large automotive or structural components precisely, relying on the 15708N push force and the stable M36x2 rod thread for heavy fixtures.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200BX450-75S the Right Cylinder?
Selecting this 200mm bore actuator makes sense when your application requires extreme force—like pushing 15708N at 0.5 MPa or 21991N at 0.7 MPa—and variable end-stop positioning. If you need less force, stepping down to a 160mm bore yields 10053N at 0.5 MPa, but the SAIJ200X450-75-S is unmatched for heavy loads. The adjustable stroke is chosen over a fixed SAI cylinder when machine setups frequently accommodate varying product sizes, letting you fine-tune the retract distance on the fly. For an exact ISO 15552 replacement, match the 200mm bore, 450mm stroke, 75mm adjustment, PT port thread, and the -S magnet requirement.
Because the nominal stroke is 450mm, the M36x2 piston rod is highly susceptible to side-loading and sagging under heavy weight; an external guide rail must be used to prevent premature seal wear. Furthermore, the rear adjuster acts strictly as a travel stop and the air cushions only manage deceleration—neither will hold the load in place without live air pressure. For true load-holding without continuous air, integrate an external rod lock or pilot-operated check valve, or consider the SAIL or BSAI series. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
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 SAIJ200BX450-75S FAQ
At 0.5 MPa, this 200mm bore cylinder generates 15708N of push force and 15080N of pull force. At 0.7 MPa, the push force increases to 21991N. The operational speed range for this heavy-duty actuator is 30-500 mm/s.
The rear adjuster screw acts as an external stopper that lets you shorten the effective stroke by up to 75mm. This creates a usable travel window between 375mm and 450mm, allowing you to set the exact retract end position during setup. It is a stop, not a lock, and requires live air to maintain position.
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