Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-20
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 850mm 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
- Stroke850 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 SAIJ200X850-20
The AirTAC SAIJ200X850-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 830 to 850 mm. As a 200 mm bore unit, it provides substantial thrust, delivering 15708 N of push force and 15080 N of pull force at a 0.5 MPa operating pressure. The extruded aluminum barrel features sensor grooves on both sides for straightforward switch installation.
This variant utilizes a robust 40 mm carbon steel rod with an M36x2 thread and PT tapered G3/4 ports. The rear adjustment mechanism allows you to fine-tune the retract end position during commissioning without adding external stops. It includes variable air cushions at both ends to manage deceleration, though the adjuster acts purely as a travel stop and will not hold the load without continuous live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-20 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 850 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 SAIJ200X850-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×850 | 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 SAIJ200X850-20 Is Used
Heavy Press Tuning
Dial in the exact 830 to 850 mm end position during press commissioning without swapping out the entire cylinder or adding external mechanical stops.
Product Size Changeover
Adjust the retract distance on the fly to accommodate different product lengths on a conveyor line, utilizing the 20 mm trim window for quick setup.
Large Assembly Jigs
Fine-tune the end-of-stroke position on heavy assembly jigs where a 15080 N pull force is required to secure components during manufacturing.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X850-20 the Right Cylinder?
When configuring a 200 mm bore setup, this 850 mm stroke model provides a maximum standard travel length within the 1500 mm limit for this bore size. If your application requires less force, stepping down to a 160 mm bore yields 10053 N of push force at 0.5 MPa, whereas moving up is impossible as 200 mm is the largest available SAIJ size. The 20 mm adjustment range is ideal for dialing in exact end positions during machine changeover rather than relying on a fixed-stroke SAI cylinder.
Because the stroke is 850 mm, the 40 mm rod and M36x2 thread must be properly supported to prevent excessive side-loading; an external guide is highly recommended for long unsupported travels. To match this ISO 15552 footprint exactly, specify the 200 mm bore, 850 mm stroke, 20 mm adjustment, PT G3/4 ports, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that a plain SAIJ does not hold position without air; for true load-holding, consider an external rod lock, a pilot-operated check valve, or the SAIL and BSAI series.
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 SAIJ200X850-20 FAQ
At a 0.5 MPa operating pressure, this 200 mm bore double-acting cylinder provides 15708 N of push force and 15080 N of pull force. The maximum thrust is 3204 kgf at 1.0 MPa.
The rear adjuster acts as an external stopper that lets you shorten the effective travel from the nominal 850 mm down to 830 mm. It sets the end position and works with the air cushions for deceleration, but it is not a lock and cannot hold the load without live air pressure.
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