Airtac SAIJ200 Adjustable Cylinder SAIJ200AX155-50
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX155-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 155mm 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
- Stroke155 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX155-50
The AirTAC SAIJ200X155-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 155 mm nominal stroke by up to 50 mm for a precise 105-155 mm usable travel window. Built with an extruded aluminum barrel, it delivers massive thrust, pushing 15708 N and pulling 15080 N at 0.5 MPa. This bore size utilizes a robust 40 mm piston rod and G3/4 PT tapered ports to handle high airflow demands.
This specific configuration features a SUS420J2 stainless steel rod (material code A) for enhanced resistance against corrosion and surface wear. Because it is a profile cylinder rather than a tie-rod design, it integrates dual sensor grooves along the barrel. Without a magnet specified, it relies on external positioning, while the rear stopper screw enables fine end-position tuning during commissioning without adding external stops.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX155-50 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX155-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 155 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 SAIJ200AX155-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×155 | 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 SAIJ200AX155-50 Is Used
Heavy Press Tuning
Dial in the exact 105-155 mm end-position during heavy press commissioning to accommodate material thickness variations without swapping cylinders.
Product Size Changeover
Quickly adjust the rear stopper on a production line to handle different large-scale product dimensions while maintaining the massive 15708 N push force.
Variable End-Stop Setup
Utilize the 50 mm adjustment range to fine-tune the retract end-position in heavy machinery setups, avoiding the need to bolt on external mechanical stops.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX155-50 the Right Cylinder?
Selecting this 200 mm bore is appropriate when 100 mm bore cylinders (providing 3927 N push at 0.5 MPa) cannot meet your load requirements, pushing you into the 3204 kgf maximum force class at 1.0 MPa. The adjustable stroke is chosen over a fixed SAI cylinder when a machine requires variable end-stops or product-size changeovers, letting you fine-tune the 105-155 mm travel window on the fly. For a true ISO 15552 replacement match, verify the 200 mm bore, 155 mm stroke, 50 mm adjustment, G3/4 PT ports, and your required mounting accessory from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2).
Although the 155 mm stroke is relatively short for this massive bore, the 40 mm rod thread handles substantial side loads; however, any heavy off-center load still necessitates an external guide. Remember that the rear adjuster acts only as a travel stop and the air cushions manage deceleration, but neither will hold the load without live air pressure. For load-holding requirements without continuous air, consider an external rod lock, a pilot-operated check valve, or AirTAC's SAIL and BSAI locking cylinders.
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 SAIJ200AX155-50 FAQ
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides a push force of 15708 N and a pull force of 15080 N. At its maximum rated pressure of 1.0 MPa, it can achieve a maximum push force equivalent to 3204 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 155 mm nominal stroke by up to 50 mm, creating a usable travel window of 105 to 155 mm. It allows precise end-position tuning at commissioning without changing the cylinder, but it functions only as a stop and does not lock the load without live air pressure.
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