Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-50
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 200mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ40 mm
- Stroke200 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-50
The AirTAC SAIJ40X200-50 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 628N of push force at 0.5 MPa and features a 50mm adjustment range, creating a precise 150-200mm usable travel window for exact end-position tuning. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This variant utilizes a SUS304 stainless steel rod (code B) for superior corrosion resistance and features PT tapered port threads (G1/4). The rear stopper allows you to trim the effective stroke during commissioning without adding external stops, while the robust 16mm rod and M12x1.25 thread handle side loads effectively on 200mm strokes.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-50 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 200 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×200 | 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 SAIJ40 Adjustable Cylinder SAIJ40BX200-50 Is Used
Product Size Changeovers
Dial in the 150-200mm travel window on the fly to accommodate different package lengths on a packaging line without swapping hardware.
Machine Setup Calibration
Fine-tune the retract end-position during commissioning to achieve exact pressing or clamping depths, avoiding costly machining of external spacers.
Variable End-Stop Positioning
Use the 50mm rear stopper screw to safely modify the stroke endpoint for diverse machining operations within a single automated cell.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-50 the Right Cylinder?
Choose this 40mm bore when an application requires moderate force, stepping up from a 32mm bore (402N push at 0.5MPa) or down from a 50mm bore (982N push at 0.5MPa). The 50mm adjustment range is perfect for machines running multiple product sizes, allowing rapid changeovers. For a fixed end-stop without the adjuster, the standard SAI cylinder is sufficient. When replacing an ISO 15552 cylinder, match the 40mm bore, 200mm stroke, PT port, and mounting choice (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
Since the stroke is 200mm, ensure external guides support the load to prevent excessive side-loading on the rod. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding without pressure, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ40 Adjustable Cylinder SAIJ40BX200-50 FAQ
At 0.5 MPa operating pressure, this 40mm bore cylinder provides 628N of push force and 528N of pull force. At 0.7 MPa, the push force increases to 879N.
The rear adjuster acts as a mechanical stop that lets you shorten the 200mm nominal stroke by up to 50mm, providing a usable travel window of 150-200mm. It requires live air to function and does not lock the load in place.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-50
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.