Airtac SAIJ40 Adjustable Cylinder SAIJ40BX15-10S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX15-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 15mm 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
- Stroke15 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX15-10S
The AirTAC SAIJ40X15-10-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 15 mm stroke with a 10 mm adjustment range, creating a precise 5 to 15 mm usable travel window for exact end-position tuning. Delivering 628 N of push force at 0.5 MPa, it handles short-stroke clamping and positioning tasks effectively.
This variant includes a SUS304 stainless steel rod for corrosion resistance and a magnet for CMSE or DMSE sensors. It uses PT tapered ports and retains the standard extruded aluminum barrel with sensor grooves on both sides. The rear adjuster acts strictly as a travel stop to decelerate the piston, not as a lock to hold the load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX15-10S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX15-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 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 SAIJ40BX15-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×15 | 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 SAIJ40BX15-10S Is Used
Precision Positioning
Dial in the exact 5-15 mm travel window during machine setup to perfect short-stroke seating and alignment without changing hardware.
Variable Clamping
Adapt clamping force and end-position depth on the fly for short parts, using the rear stopper to fine-tune the stroke endpoint.
Sensor Integration
Leverage the built-in magnet for CMSE reed or DMSE solid-state sensors to confirm short-stroke movements in automated lines.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX15-10S the Right Cylinder?
Choose this 40 mm bore when you need 628 N push force at 0.5 MPa, stepping up from a 32 mm bore (402 N) for heavier short-stroke clamping. The 10 mm adjustment range is ideal for dialing in exact end stops during machine commissioning without swapping cylinders. For load-holding without continuous air pressure, select a SAIL or BSAI series cylinder instead of relying on this rear stopper.
When replacing an ISO 15552 cylinder, match the 40 mm bore, 15 mm nominal stroke, 10 mm adjuster, PT port thread, and -S magnet. Because the stroke is under 300 mm, side-load stress is minimal, but always ensure the load is guided to prevent rod binding.
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 SAIJ40BX15-10S FAQ
It has a rear adjuster screw that lets you shorten the 15 mm nominal stroke by up to 10 mm. This provides a usable travel window of 5 to 15 mm, allowing precise end-position tuning without adding external stops.
At 0.5 MPa operating pressure, it provides 628 N of push force and 528 N of pull force. It can deliver up to 1130 N push force at 0.9 MPa.
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