Airtac SAIJ40 Adjustable Cylinder SAIJ40BX35-30S
The AirTAC Airtac SAIJ40 Adjustable Cylinder SAIJ40BX35-30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 35mm 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
- Stroke35 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX35-30S
The AirTAC SAIJ40X35-30-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 35 mm stroke that can be fine-tuned down by up to 30 mm, yielding a highly versatile 5 to 35 mm usable travel window. Delivering 628 N of push force at 0.5 MPa, it is built on an extruded aluminum barrel and features a SUS304 stainless steel rod for superior corrosion resistance.
This model includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors, which seat neatly into the sensor grooves on both sides of the profile. The rear adjuster acts purely as a mechanical stop to dial in the retract end-position during commissioning; it does not lock the load without live air. For position holding without pressure, an external pilot-operated check valve or a related SAIL lock cylinder is required.
Airtac SAIJ40 Adjustable Cylinder SAIJ40BX35-30S Technical Specifications
| Model | Airtac SAIJ40 Adjustable Cylinder SAIJ40BX35-30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 35 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 SAIJ40BX35-30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×35 | 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 SAIJ40BX35-30S Is Used
Short-Stroke Calibration
Ideal for dialing in precise clamping or positioning ends on small parts, using the 5 to 35 mm travel window to perfect the retract distance during machine commissioning.
Product Changeover
Quickly adapt to varying product sizes on a packaging line by twisting the rear stopper, avoiding the need to physically swap out cylinders for different format parts.
Corrosion-Resistant Actuation
The SUS304 stainless steel rod makes this adjustable cylinder well-suited for light manufacturing environments where moisture or minor corrosive elements are present.
Is the Airtac SAIJ40 Adjustable Cylinder SAIJ40BX35-30S the Right Cylinder?
Choose this 40 mm bore when an application demands precise end-position tuning within a short travel window, stepping up from a 32 mm bore (402 N push at 0.5 MPa) to gain extra thrust. The adjustable stroke is ideal for machine setups requiring variable end-stops or product-size changeovers without swapping cylinders. Because the stroke is under 300 mm, side-load stress is minimal, though the robust 16 mm rod and M12x1.25 thread still handle moderate bending loads well.
When specifying a replacement, ensure you match the 40 mm bore, 35 mm nominal stroke, 30 mm adjustment range, PT tapered port threads, and the -S magnet option. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets. Remember that the rear screw sets the travel limit but does not function as a brake or lock for holding loads safely without air pressure.
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 SAIJ40BX35-30S FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. If higher pressure is utilized, the push force increases to 879 N at 0.7 MPa.
The rear adjuster screw allows you to trim the effective stroke by up to 30 mm from the 35 mm nominal length, creating a usable travel window of 5 to 35 mm. It acts as a mechanical stop to fine-tune the end position and is not a locking device.
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 SAIJ40BX35-30S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.