Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-30S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 85mm 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
- Stroke85 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-30S
The AirTAC SAIJ200X85-30-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 85 mm stroke that can be fine-tuned backward by up to 30 mm, creating a precise 55-85 mm usable travel window for exact end-position calibration. In this A-variant configuration, the rod is constructed from SUS420J2 stainless steel, and the body features PT tapered ports.
Delivering massive thrust, this 200 mm bore model generates 21991 N of push force and 15080 N of pull force at 0.7 MPa. The extruded aluminum barrel includes sensor grooves on both sides, and with the built-in magnet (-S), it integrates seamlessly with AirTAC CMSE reed and DMSE electronic solid-state switches for exact position feedback.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-30S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 85 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 SAIJ200AX85-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×85 | 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 SAIJ200AX85-30S Is Used
Heavy Press Tuning
Dial in the exact 55-85 mm end-position for heavy stamping or pressing tasks without changing the cylinder.
Product Changeover
Quickly adjust the retract stop to accommodate different material thicknesses on a high-force assembly line.
Large Fixture Clamping
Secure massive components with up to 21991 N of force while fine-tuning the clamping distance during setup.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-30S the Right Cylinder?
Selecting this 200 mm bore makes sense when your application requires extreme force, as stepping down to a 160 mm bore drops your 0.5 MPa push force from 10053 N to 6136 N. You would choose this adjustable SAIJ over a fixed-stroke SAI when a machine requires precise end-stop tuning during commissioning or product changeovers, avoiding the need to physically swap cylinders or bolt on external stops. For drop-in replacement, verify the 85 mm nominal stroke, 30 mm adjuster range, PT port threads, and the -S magnet.
Because the 85 mm stroke is relatively short for this large bore, the 40 mm diameter rod and M36x2 thread provide excellent rigidity against side loads. Note that the rear adjuster acts only as a travel stop and the air cushions manage deceleration; neither will hold a load without live air pressure. For fail-safe load holding, consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external rod lock.
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 SAIJ200AX85-30S FAQ
At an operating pressure of 0.7 MPa, this 200 mm bore cylinder generates 21991 N of push force and 15080 N of pull force. It can deliver a maximum of 3204 kgf at 1.0 MPa.
The rear adjuster screw allows you to shorten the nominal 85 mm stroke by up to 30 mm. This creates a usable travel window of 55 to 85 mm, letting you set the exact retract end-position during commissioning without adding external stops.
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