Airtac SAIJ40 Adjustable Cylinder SAIJ40BX750-10S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX750-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 750mm 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
- Stroke750 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX750-10S
The AirTAC SAIJ40X750-10-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 740-750mm usable travel window, allowing you to dial in the exact end position without adding external stops. The 40mm bore generates 628N of push force and 528N of pull force at 0.5 MPa, making it well-suited for medium-duty automation tasks.
This variant uses a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for CMSE reed and DMSE electronic sensors. It features PT tapered ports, a 16mm rod with an M12x1.25 thread, and adjustable air cushions at both ends. The extruded aluminum barrel design integrates sensor grooves on both sides for flexible switch mounting.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX750-10S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX750-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 750 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 SAIJ40BX750-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×750 | 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 SAIJ40BX750-10S Is Used
Long-Stroke Component Placement
Executes 740-750mm extended travel cycles for positioning parts across wide machine spans, using the rear stopper to dial in the exact final resting position.
Machine Commissioning Tuning
Allows operators to fine-tune the end-of-stroke landing point by up to 10mm during initial setup, compensating for mechanical tolerance stack-up without changing hardware.
Variable Product Changeover
Adapts the retract position for different package sizes on a conveyor line, providing a simple external adjustment screw rather than requiring cylinder replacement.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX750-10S the Right Cylinder?
Choose this 40mm bore when your application requires around 628N of force at 0.5 MPa; step down to a 32mm bore (402N) for lighter loads or up to a 50mm bore (982N) for heavier demands. The 10mm rear adjuster is ideal for fine-tuning a long 750mm travel distance during machine commissioning or product changeover, avoiding the need to swap out a fixed-stroke SAI cylinder. At 750mm of stroke, the unsupported piston rod is highly susceptible to side-loading and sagging, so an external guide rail is strongly recommended to prevent premature seal wear.
For ISO 15552 replacement matching, verify the 40mm bore, 750mm stroke, 10mm adjustment range, PT port thread, and the -S magnet option. Remember that the rear adjuster functions only as a travel stop and does not hold the load without live air pressure; for true load-holding without continuous air, consider the SAIL or BSAI series. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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 SAIJ40BX750-10S FAQ
At a 0.5 MPa operating pressure, this 40mm bore cylinder generates 628N of push force and 528N of pull force. At the maximum rated pressure of 1.0 MPa, it can deliver up to 128 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke from 750mm down to 740mm. It is a travel stop for end-position tuning, not a lock, and the cylinder requires live air pressure to hold its load.
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