Airtac SAIJ200 Adjustable Cylinder SAIJ200AX375-30S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX375-30S 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 SAIJ200AX375-30S
The AirTAC SAIJ200X375-30-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 375mm nominal travel by up to 30mm for a precise 345-375mm usable window. Built with an SUS420J2 stainless steel rod (option A) and a PT tapered port, it delivers immense thrust, pushing 15708N and pulling 15080N at 0.5 MPa. The extruded aluminum barrel features sensor grooves on both sides, and because this is an -S variant, it includes a magnet ready for CMSE reed and DMSE electronic solid-state switches.
This massive 200mm bore unit operates at 30-500mm/s and relies on adjustable air cushions at both ends to decelerate heavy loads. The rear stopper mechanism is strictly a travel end-stop for fine-tuning position at commissioning, not a lock, meaning it will not hold the load without live air pressure. For load-holding without continuous air, you would need to step up to an SAIL or BSAI variant, or use an external rod lock.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX375-30S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX375-30S |
|---|---|
| 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 SAIJ200AX375-30S
| 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 SAIJ200AX375-30S Is Used
Machine Changeover
Dial in the 345-375mm travel window during product size transitions without physically replacing the cylinder or bolting on external stops.
Heavy Pressing
Leverage the 15708N push force at 0.5 MPa for heavy-duty assembly and pressing tasks requiring precise end-position tuning.
Position Calibration
Fine-tune the retract end-position at commissioning using the rear screw, perfecting the stroke without altering the ISO 15552 mounting footprint.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX375-30S the Right Cylinder?
Choose this 200mm bore when an application demands extreme force, such as 15708N push at 0.5 MPa, and requires exact end-position tuning without swapping cylinders or adding external stops. If your process requires slightly less power, stepping down to a 160mm bore yields 10053N push force at 0.5 MPa. When specifying a replacement, match the 200mm bore, 375mm stroke, 30mm adjustment, PT port, and the -S magnet. Mounting options are limited to the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Because the 375mm stroke is substantial, the 40mm rod diameter and M36x2 thread provide robust support, but long unsupported strokes still require an external guide to manage side loads. The rear adjuster acts purely as a mechanical stop to trim the travel window, so it must never be relied upon as a braking mechanism to hold position under load.
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 SAIJ200AX375-30S FAQ
At 0.5 MPa, 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 operating speed range is 30-500mm/s.
The rear adjuster screw allows you to shorten the 375mm nominal stroke by up to 30mm, creating a usable travel window of 345-375mm. The adjuster acts as a mechanical stop to fine-tune the end position and does not hold the load without live air pressure.
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