Airtac SAIJ40 Adjustable Cylinder SAIJ40BX135-40S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX135-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 135mm 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
- Stroke135 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX135-40S
The AirTAC SAIJ40X135-40-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 95 to 135 mm usable travel window, allowing you to dial back the nominal 135 mm stroke by up to 40 mm during commissioning. Delivering 628 N of push force at 0.5 MPa, it fits medium-duty positioning tasks perfectly.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel maintains standard ISO 15552 mounting dimensions while omitting FB, CA, CB, and CR brackets, utilizing a focused set of Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX135-40S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX135-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 135 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 SAIJ40BX135-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×135 | 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 SAIJ40BX135-40S Is Used
Product Changeovers
Quickly reconfigure the 95-135 mm stroke window on packaging lines when handling different carton sizes, avoiding the need for physical cylinder swaps.
End-Position Tuning
Fine-tune the exact retract distance during machine setup to perfect material feeding or pressing operations without adding external stopper hardware.
Corrosive Assembly Lines
Leverage the SUS304 stainless steel rod and 628 N output force for reliable actuation in washdown or mildly corrosive manufacturing environments.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX135-40S the Right Cylinder?
Choose this 40 mm bore when you need more power than a 32 mm cylinder (which provides 402 N push at 0.5 MPa) but want to avoid the bulk of a 50 mm option (982 N). The 40 mm adjustment range is ideal for product changeovers on a packaging line, letting you set variable end stops without swapping cylinders or adding external stopper blocks. For fixed-position tasks without any trim requirement, a standard SAI cylinder is simpler.
To replace an ISO 15552 cylinder, match the 40 mm bore, 135 mm stroke, G1/4 or PT port, and the -S magnet. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding without pressure, consider an AirTAC SAIL or BSAI cylinder. The M12x1.25 rod thread handles standard side loads well, but always support long unsupported strokes with an external guide.
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 SAIJ40BX135-40S 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 lets you shorten the effective travel from the nominal 135 mm down to 95 mm, creating a 95-135 mm usable window. It acts as a mechanical stop to fine-tune the end position and is not a locking mechanism.
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 SAIJ40BX135-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.