Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-40
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 120mm 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
- Stroke120 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-40
The AirTAC SAIJ200X120-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 40 mm. This creates a usable stroke window of 80 to 120 mm, enabling precise end-position tuning at commissioning without swapping the cylinder or adding external stops. Built with a SUS420J2 stainless steel rod and PT tapered ports, it handles massive loads with 15708 N of push force and 15080 N of pull force at 0.5 MPa.
Unlike fixed-stroke SAI models, this variant uses an external adjusting screw at the retract end to fine-tune the travel limit. The rear adjuster acts purely as a mechanical stop to set the end position and relies on the integrated variable air cushions for deceleration; it does not hold the load without live air pressure. The extruded aluminum barrel features sensor grooves on both sides, and because no magnet is specified, position sensing would require adding the -S option to support CMSE reed or DMSE solid-state switches.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-40 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 120 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 SAIJ200AX120-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×120 | 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 SAIJ200AX120-40 Is Used
Heavy Press Tuning
Dial in the exact 80-120 mm travel window during heavy press commissioning to accommodate varying material thicknesses without external stops.
Product Changeover
Rapidly adjust the end-of-stroke position for different large product sizes on a line, leveraging the 40 mm trim range to maintain cycle timing.
Assembly Station Setup
Fine-tune the retract end position on heavy assembly machinery, utilizing the 28274 N push force at 0.9 MPa for high-force joining operations.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-40 the Right Cylinder?
Choose this 200 mm bore when your application requires extreme thrust that exceeds the 10053 N push force of the neighboring 160 mm bore at 0.5 MPa. The adjustable stroke is highly beneficial for heavy product changeovers, allowing operators to dial in the exact 80 to 120 mm travel window on the fly. For any load-holding requirements without continuous air pressure, note that this rear adjuster is a travel stop and not a lock; you would need to look at the SAIL or BSAI series instead. When replacing an ISO 15552 cylinder, verify the 200 mm bore, 120 mm stroke, 40 mm adjustment, PT G3/4 port, and your required mounting interface from the available SAIJ set: Basic, FA, LB, TC, FTC, TCM1, or 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 SAIJ200AX120-40 FAQ
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At 0.9 MPa, the push force increases to 28274 N.
The rear adjuster screw allows you to shorten the nominal 120 mm stroke by up to 40 mm, providing an effective travel window of 80 to 120 mm. This stopper sets the end position but does not lock the load without live air pressure.
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