Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-30S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 100mm 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
- Stroke100 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-30S
The AirTAC SAIJ40X100-30-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. With a nominal 100 mm stroke and a 30 mm adjustment range, you can fine-tune the effective travel window down to 70 mm during commissioning without adding external stops. It delivers 879 N of push force at 0.7 MPa and uses a SUS304 stainless steel rod for superior corrosion resistance in harsh environments.
This adjustable-stroke model omits the FB, CA, CB, and CR mounts, utilizing a focused set of ISO 15552 interfaces: Basic, FA, LB, TC, FTC, TCM1, and TCM2. The integrated magnet supports CMSE reed and DMSE electronic sensors via the dual-side sensor grooves. Remember that the rear adjuster acts purely as a mechanical travel stop, not a lock; it cannot hold a load without live air pressure.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-30S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 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 SAIJ40BX100-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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 SAIJ40BX100-30S Is Used
Machine Changeover
Dial the travel down from 100 mm to 70 mm instantly when switching to a smaller product format on the line.
End-Stop Tuning
Fine-tune the retract position during setup to hit exact pressing or clamping depths without external stopper blocks.
Corrosive Environments
The SUS304 stainless rod withstands washdowns and chemical exposure better than standard carbon steel.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX100-30S the Right Cylinder?
Choose this 40 mm bore when you need 879 N of thrust at 0.7 MPa and require precise end-position tuning within a 70-100 mm window. If your application demands less force, stepping down to a 32 mm bore yields 563 N, while moving up to a 50 mm bore provides 1374 N. The adjustable stroke is ideal for product changeovers, letting you dial in the exact retract distance without swapping the cylinder. For holding loads without continuous air pressure, select a SAIL or BSAI cylinder instead.
When replacing an ISO 15552 unit, match the 40 mm bore, 100 mm nominal stroke, 30 mm adjuster, PT tapered ports, and the -S magnet. The M12x1.25 rod thread and 16 mm rod diameter handle moderate side loads well, but for any stroke over 300 mm, an external guide is required 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 SAIJ40BX100-30S FAQ
The rear adjuster acts as a mechanical stop that lets you shorten the effective travel from the 100 mm nominal stroke down to a minimum of 70 mm. It sets the end position but does not lock or hold the load without live air pressure.
At 0.7 MPa operating pressure, it provides 879 N of push force and 528 N of pull force. The maximum thrust is 128 kgf at 1.0 MPa.
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