Airtac SAIJ200 Adjustable Cylinder SAIJ200AX950-75S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX950-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 950mm 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
- Stroke950 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX950-75S
The AirTAC SAIJ200X950-75-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty applications requiring exact end-position tuning. It integrates a rear mechanical stopper that allows you to shorten the effective stroke by up to 75 mm, creating a precise usable travel window of 875 to 950 mm without swapping out the barrel. Delivering a robust 15708 N of push force at 0.5 MPa and a maximum of 3204 kgf at 1.0 MPa, this 200 mm bore unit handles massive loads with ease.
Built with a SUS420J2 stainless steel rod (option A) for superior corrosion resistance, it features PT tapered G3/4 ports and a built-in magnet (-S) for position sensing. The magnet interfaces directly with AirTAC CMSE reed and DMSE electronic solid-state switches, which seat cleanly into the dual sensor grooves machined along the extruded aluminum barrel. This adjustable design eliminates the need to bolt on external stops during machine setup, while the standard 50 mm variable air cushions at both ends manage end-of-stroke deceleration.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX950-75S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX950-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 950 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 SAIJ200AX950-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×950 | 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 SAIJ200AX950-75S Is Used
Heavy-Press Positioning
Dial in the exact bottom dead-center on large stamping or forming presses using the 875-950 mm travel window, accommodating varying material thicknesses without external spacers.
Large-Scale Material Diversion
Actuate heavy-duty diverter arms on high-capacity conveyor lines, adjusting the retract stop by up to 75 mm to handle different pallet or product sizes during line changeovers.
Automated Assembly Tuning
Fine-tune the end-of-stroke clamping position on large assembly fixtures during commissioning, using the built-in rear stopper to compensate for mechanical tolerance stack-up.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX950-75S the Right Cylinder?
Selecting this 200 mm bore model is ideal when your application demands the highest thrust class—stepping down to a 160 mm bore drops the 0.5 MPa push force to 10053 N, whereas this SAIJ200X950-75-S provides 15708 N. The 75 mm adjustment range is specifically valuable for large-scale machine changeovers, allowing you to fine-tune the retract end-position on the fly rather than machining custom spacers or ordering a different fixed-stroke SAI cylinder. Because the 950 mm stroke approaches the 1500 mm maximum standard limit for this bore, maintaining a high 30-500 mm/s speed requires careful flow control to prevent excessive kinetic energy.
When integrating this cylinder, remember that the rear adjuster and the air cushions only set the travel end and deceleration; neither mechanism will hold a load without continuous live air pressure. For fail-safe load-holding on heavy vertical loads, consider the AirTAC SAIL pneumatic lock or BSAI clamp-lock series, or integrate an external pilot-operated check valve. Furthermore, due to the 950 mm stroke length, the 40 mm diameter rod will experience amplified leverage forces under side-loading; always pair this cylinder with an external linear guide to prevent premature seal wear and rod bending. This unit uses the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets.
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 SAIJ200AX950-75S FAQ
This 200 mm bore cylinder provides a push force of 15708 N and a pull force of 15080 N at 0.5 MPa. At the maximum operating pressure of 1.0 MPa, it delivers a peak push force of 3204 kgf.
The rear adjuster acts as a mechanical stop that lets you shorten the nominal 950 mm stroke by up to 75 mm, resulting in an effective travel range of 875 to 950 mm. It is a travel stop, not a lock, so the cylinder still requires live air to hold its position.
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