Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-10S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-10S 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 SAIJ40BX200-10S
The AirTAC SAIJ40X200-10-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 190-200mm usable travel window, allowing you to dial back the nominal 200mm stroke by up to 10mm during commissioning without adding external stops. Built with a SUS304 stainless steel rod, it delivers 879N of push force at 0.7MPa and uses PT tapered port threading.
The extruded aluminum barrel features sensor grooves on both sides, and because this SKU includes a magnet (-S), it works seamlessly with AirTAC CMSE reed and DMSE solid-state switches. The rear adjuster functions strictly as a travel stop to set end positions, not as a lock, so live air is required to hold the load. Mounting options include the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-10S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-10S |
|---|---|
| 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 SAIJ40BX200-10S
| 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 SAIJ40BX200-10S Is Used
Machine Setup Tuning
Dial in the exact 190-200mm end-position during commissioning to align tooling perfectly without swapping out the entire cylinder.
Product Changeover
Quickly adjust the retract stop by up to 10mm on packaging lines when running slightly shorter product lengths, minimizing downtime.
Variable End-Stop Assembly
Fine-tune the stroke end on light assembly presses where a fixed 200mm travel might over-travel and damage delicate components.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-10S the Right Cylinder?
Choose this 40mm bore cylinder when your application requires 879N of thrust at 0.7MPa, stepping up from a 32mm bore that provides 563N. The adjustable stroke is ideal for machine setups requiring variable end-stops or product changeovers, giving you precise tuning flexibility that a fixed-stroke SAI cylinder cannot offer. If you need to hold a load without continuous air pressure, the rear stop will not suffice; consider an external rod lock or AirTAC SAIL and BSAI series cylinders instead.
For an exact ISO 15552 replacement match, verify the 40mm bore, 200mm nominal stroke, 10mm adjustment range, PT G1/4 port, and the -S magnet option. The 16mm rod and M12x1.25 thread handle moderate side loads, but because the stroke is 200mm, always guide the load externally to prevent rod bending.
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 SAIJ40BX200-10S FAQ
At 0.7MPa, this 40mm bore double-acting cylinder generates 879N of push force and 528N of pull force. It can reach a maximum push force of 1130N at 0.9MPa.
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke from 200mm down to as little as 190mm, giving you a 190-200mm travel window to fine-tune end positions without external stops.
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