Airtac SAIJ200 Adjustable Cylinder SAIJ200AX375-50S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX375-50S 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 SAIJ200AX375-50S
The AirTAC SAIJ200X375-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a massive 15708N of push force at 1.0MPa and features a 50mm adjustment range, creating a usable travel window of 325-375mm. This built-in adjustability allows operators to fine-tune the retract end-position during commissioning or product changeovers without swapping out the entire actuator.
This specific SKU utilizes a SUS420J2 stainless steel rod for enhanced corrosion resistance and includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel includes sensor grooves on three sides, and the unit operates with PT tapered ports (G3/4). The rear adjuster functions purely as a travel stop to set deceleration, not as a lock to hold the load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX375-50S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX375-50S |
|---|---|
| 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 SAIJ200AX375-50S
| 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 SAIJ200AX375-50S Is Used
Heavy Machinery Changeover
Dial in the 325-375mm retract end-stop on the fly when switching between heavy product profiles on a single production line without changing tooling.
Large Press Positioning
Fine-tune the exact end-position of a high-force pressing operation during commissioning, using the 50mm adjustment to dial in the final 15708N of thrust.
Oversized Load Diverting
Adjust the stroke length to safely divert varying sizes of bulk materials on a heavy-duty conveyor belt without repositioning the cylinder mount.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX375-50S the Right Cylinder?
Selecting this 200mm bore actuator is ideal when your application requires the highest thrust class within the SAIJ range, delivering 15708N push and 15080N pull at 1.0MPa. If an application requires less force, stepping down to a 160mm bore provides 10053N push at 0.5MPa, which might avoid excessive cycle shock. The adjustable stroke is chosen over a fixed SAI cylinder when machinery processes varying product sizes, requiring a variable end-stop. To exactly replace an ISO 15552 cylinder, match the 200mm bore, 375mm stroke, 50mm adjustment, PT port thread, and the -S magnet option. Note that SAIJ supports a reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
Because this model features a long 375mm stroke, the 40mm rod diameter and M36x2 thread will carry significant side loads, but an external guide rail is still strongly recommended to prevent rod binding. Furthermore, this cylinder does not hold its position without live air; for true load-holding without pressure, consider the AirTAC SAIL (pneumatic lock) or BSAI (clamp-lock) series, or an external pilot-operated check valve. Operating speed is 30-500mm/s.
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 SAIJ200AX375-50S FAQ
The rear of the cylinder features an external adjusting screw that allows you to shorten the effective stroke by up to 50mm. This creates a usable travel window of 325-375mm, letting you set the exact retract end-position at commissioning without adding external stops. The adjuster acts as a stop and does not lock the load without live air.
At the maximum operating pressure of 1.0MPa, it provides 15708N of push force and 15080N of pull force. The recommended operating speed range for this 200mm bore size is 30-500mm/s.
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