Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-40
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 95mm 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
- Stroke95 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-40
The AirTAC SAIJ40X95-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 95 mm stroke back by up to 40 mm. This creates a highly versatile 55 to 95 mm usable travel window, letting you dial in the exact end position during machine commissioning without swapping out the barrel or adding external stops. It delivers 628 N of push force at 0.5 MPa and 879 N at 0.7 MPa.
This specific configuration features a SUS304 stainless steel rod (code B) for superior corrosion resistance and utilizes PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting, while the 16 mm rod and M12x1.25 thread provide a robust interface that handles side loads well, though external guides are still recommended for optimal performance.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-40 Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 95 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 SAIJ40BX95-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×95 | 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 SAIJ40BX95-40 Is Used
Machine Setup & Commissioning
Fine-tune the 55-95 mm travel window during initial machine build to perfectly position the end-of-stroke stop without machining custom spacers.
Product Size Changeovers
Rapidly adjust the retract end position on packaging lines when switching between different product sizes, minimizing downtime.
Variable End-Stop Positioning
Dial in the exact clamping distance on test fixtures where the required stroke varies slightly between assemblies.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-40 the Right Cylinder?
Choose this 40 mm bore when you need more thrust than a 32 mm cylinder (which provides 402 N at 0.5 MPa) but want to avoid the bulk of a 50 mm unit. An adjustable stroke is selected over a fixed SAI when your machine requires variable end-stops for product changeovers or fine-tuning at setup. Remember that the rear adjuster acts only as a travel stop to decelerate the piston; it does not hold the load without live air. For true load-holding without pressure, consider the SAIL or BSAI series.
When replacing an ISO 15552 cylinder, match the 40 mm bore, 95 mm stroke, 40 mm adjustment range, PT G1/4 port, and standard mounting interface. The SAIJ supports a reduced set of mounting options (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. Because the stroke is under 300 mm, side-load stress is minimal, but always ensure the rod thread is properly aligned to prevent 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 SAIJ40BX95-40 FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 879 N.
The rear adjuster screw allows you to shorten the 95 mm nominal stroke by up to 40 mm, providing a usable travel window of 55 to 95 mm. The adjuster acts as a stop to set the end position and relies on the air cushion for deceleration; it is not a lock and will not hold the load without continuous air pressure.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ40 Adjustable Cylinder SAIJ40BX95-40
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.