Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-30
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-30 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 SAIJ40BX200-30
The AirTAC SAIJ40X200-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the 200 mm nominal stroke back by up to 30 mm. This yields a 170-200 mm usable travel window, allowing you to dial in the exact retract end-position at commissioning without swapping the barrel or adding external stops. It delivers 628 N of push force and 528 N of pull force at 0.5 MPa.
Built with a SUS304 stainless steel rod for corrosion resistance, this 40 mm bore unit uses PT tapered G1/4 ports and variable air cushions at both ends. The extruded aluminum barrel includes sensor grooves on both sides for mounting CMSE reed or DMSE electronic switches. Mounting options are limited to the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-30 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-30 |
|---|---|
| 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 SAIJ40BX200-30
| 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 SAIJ40BX200-30 Is Used
Machine Changeover Setup
Fine-tune the 170-200 mm retract position during product size changes on a packaging line without physically replacing the actuator.
Variable End-Stop Positioning
Dial in the exact end-of-stroke point for assembly presses that need precise, repeatable seating without machining custom external spacers.
Corrosive Environment Handling
Leverage the SUS304 stainless steel rod for automated material handling tasks in washdown or mildly corrosive manufacturing zones.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX200-30 the Right Cylinder?
Select this 40 mm bore when an application requires 628 N of push force at 0.5 MPa, stepping up from a 32 mm bore (402 N push) for heavier handling, or down from a 63 mm bore (1559 N push) to save space. The 30 mm adjustment range is ideal for product changeovers where the retract distance varies slightly. Because the 200 mm stroke exceeds 300 mm, external guiding is not strictly mandated, but the M12x1.25 rod thread handles moderate side loads well.
For load-holding without live air pressure, note that the rear adjuster acts only as a travel stop, not a lock. In these cases, consider the SAIL or BSAI series instead. To match this ISO 15552 footprint, specify: 40 mm bore, 200 mm stroke, 30 mm adjustment, PT G1/4 port, and the desired mounting bracket.
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 SAIJ40BX200-30 FAQ
It features a rear adjusting screw that acts as a mechanical stopper, allowing you to shorten the effective stroke by up to 30 mm. This creates a 170-200 mm usable travel window, though it does not lock the load without live air pressure.
At 0.5 MPa operating pressure, this 40 mm bore double-acting cylinder provides 628 N of push force and 528 N of pull force. It can deliver up to 1130 N of push force at 0.9 MPa.
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