Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-75S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 185mm 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
- Stroke185 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-75S
The AirTAC SAIJ200X185-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 185 mm nominal stroke by up to 75 mm to achieve a precise 110-185 mm usable travel window. Delivering massive thrust, it generates 21991 N of push force and 15080 N of pull force at 0.7 MPa. This makes it highly suitable for heavy-duty machinery requiring exact end-position tuning during commissioning without adding external stops.
This model features a robust 40 mm diameter carbon steel piston rod and a PT (tapered) G3/4 port. It includes a magnet (-S) for position sensing, compatible with AirTAC CMSE reed switches and DMSE solid-state electronic sensors that mount directly into the dual-side sensor grooves on the extruded aluminum barrel. The rod is constructed from SUS420J2 stainless steel (code A), offering enhanced durability against lateral stress and harsh environments.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-75S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 185 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 SAIJ200AX185-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×185 | 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 SAIJ200AX185-75S Is Used
Heavy Machinery Setup
Fine-tunes the 110-185 mm retraction stop during heavy equipment assembly, allowing precise positioning of large components without external mechanical stops.
Product Size Changeover
Adjusts the end-stop rapidly on packaging lines handling varying pallet sizes, using the 75 mm adjustment window to adapt to different product dimensions on the fly.
High-Force Positioning
Leverages the 21991 N push force at 0.7 MPa to shift heavy workpieces, using the rear screw to dial in the exact 185 mm travel limit for precision manufacturing.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-75S the Right Cylinder?
Select this 200 mm bore cylinder when your application requires extreme force—stepping down to a 160 mm bore drops the 0.5 MPa push force to 10053 N, whereas this SAIJ200X185-75-S provides 15708 N at the same pressure. Choose the adjustable-stroke SAIJ format over a fixed-stroke SAI when you need variable end-stops for product-size changeovers on a line, allowing you to fine-tune the retraction point without swapping out the entire cylinder.
Because the rear adjuster functions strictly as a travel stop and the air cushion only manages deceleration, this cylinder cannot hold a load without live air pressure. For load-holding requirements without continuous air, consider an AirTAC SAIL (pneumatic lock) or BSAI (clamp-lock) cylinder instead. When replacing an ISO 15552 cylinder, match the 200 mm bore, 185 mm stroke, 75 mm adjustment, PT G3/4 port, and -S magnet. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ200AX185-75S FAQ
At 0.7 MPa operating pressure, this 200 mm bore cylinder provides 21991 N of push force and 15080 N of pull force. At the maximum operating pressure of 1.0 MPa, it can deliver up to 3204 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 185 mm nominal stroke by up to 75 mm, creating a 110-185 mm usable travel window. It is a travel stop, not a lock, and does not hold the load without live air pressure.
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