Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-75S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-75S 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 SAIJ200AX85-75S
The AirTAC SAIJ200X85-75-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty tasks, delivering 15708 N of push force at 0.5 MPa. It features a 40 mm SUS420J2 stainless steel rod and PT tapered ports. By integrating a rear mechanical stopper, this model provides a usable travel window of 10-85 mm, allowing you to dial back the nominal 85 mm stroke by up to 75 mm during commissioning.
This adjuster acts strictly as a travel end-stop to fine-tune deceleration and position, not as a lock to hold the load without live air. The extruded aluminum barrel includes sensor grooves on both sides, and the included magnet (-S) supports AirTAC CMSE reed and DMSE electronic solid-state switches for precise end-position detection.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-75S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-75S |
|---|---|
| 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 SAIJ200AX85-75S
| 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 SAIJ200AX85-75S Is Used
Heavy Press Tuning
Dial in the exact 10-85 mm end-stop during setup for heavy pressing operations, accommodating material thickness variations without changing the actuator.
Product Changeover Stops
Adjust the rear stopper by up to 75 mm on the fly to handle different pallet sizes on a high-thrust conveyor line.
Variable End Deceleration
Fine-tune the travel end position on heavy machinery to optimize the air cushion and mechanical stop interaction for varying load weights.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX85-75S the Right Cylinder?
Select this 200 mm bore cylinder when an application demands extreme thrust—up to 15708 N push at 0.5 MPa—along with variable end-position tuning. If you need less force, stepping down to a 160 mm bore yields 10053 N of push force at 0.5 MPa, which may better suit medium-heavy loads. Choose the SAIJ adjustable format over a fixed SAI cylinder when you require on-the-fly stroke trimming for product changeovers without swapping the physical actuator.
For an exact ISO 15552 replacement match, verify the 200 mm bore, 85 mm stroke, 75 mm adjustment range, PT port threads, and the -S magnet option. Mounting is limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Because the stroke is 85 mm, side-load risks are minimal, but the 40 mm rod still requires proper external guiding for heavy lateral loads. For load-holding without live air pressure, consider an AirTAC SAIL or BSAI cylinder instead.
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 SAIJ200AX85-75S FAQ
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. It can reach a maximum push force of 28274 N at 0.9 MPa.
The rear adjuster screw allows you to shorten the nominal 85 mm stroke by up to 75 mm, creating a usable travel window of 10-85 mm. This stopper sets the end position but does not lock the load without continuous air pressure.
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