Airtac SAIJ50 Adjustable Cylinder SAIJ50BX35-30
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX35-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm 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.
- BoreØ50 mm
- Stroke35 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX35-30
The AirTAC SAIJ50X35-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 982N of push force at 0.5 MPa. Its defining feature is the external stopper screw, which allows you to fine-tune the retract end position on the fly. With a 35mm nominal stroke and a 30mm adjustment code, this model provides a usable travel window of 5 to 35mm, making it highly effective for applications requiring precise variable end-stops without adding external bumpers.
This specific configuration features a SUS304 stainless steel rod (material code B) for superior corrosion resistance, paired with PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, allowing for the direct mounting of AirTAC CMSE reed or DMSE electronic sensors if a magnet is added later. The rear adjuster functions strictly as a travel stop to set deceleration, so it will not hold a load safely without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX35-30 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX35-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 35 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50BX35-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | 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 SAIJ50 Adjustable Cylinder SAIJ50BX35-30 Is Used
Product Changeover
Quickly adjust the travel window from 5 to 35mm when switching between product sizes on a packaging line, avoiding the need to physically swap out the entire cylinder.
Precision End-Positioning
Dial in the exact retract stop during machine commissioning to achieve precise placement, utilizing the rear screw rather than relying on fixed mechanical spacers.
Corrosive Assembly Lines
Leverage the SUS304 stainless steel rod for light-duty pushing tasks (up to 982N at 0.5 MPa) in environments where moisture or mild chemicals would degrade standard carbon steel rods.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX35-30 the Right Cylinder?
Selecting this 50mm bore cylinder makes sense when your machine setup requires exact end-position tuning during commissioning or product changeover, stepping up from a 40mm bore (528N pull at 0.5 MPa) to handle 825N of pull force. The adjustable 5 to 35mm travel window allows you to dial in the exact stroke needed for a specific task, whereas a fixed-stroke SAI cylinder locks you into a single 35mm distance. If your process requires the load to be held securely without continuous air pressure, you would need to look beyond this model to a SAIL pneumatic lock or BSAI clamp-lock cylinder, as the SAIJ adjuster is only a stop.
For an exact ISO 15552 dimensional replacement, match the 50mm bore, 35mm nominal stroke, 30mm adjustment range, PT port thread, and standard mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that this configuration uses a SUS304 stainless steel rod and does not include a magnet (-S) for sensor detection. Because the total stroke is under 300mm, side-load stress on the M16x1.5 rod thread is minimal, though external guides are still recommended for heavy lateral loads.
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 SAIJ50 Adjustable Cylinder SAIJ50BX35-30 FAQ
At a standard operating pressure of 0.5 MPa, this 50mm bore cylinder provides 982N of push force and 825N of pull force. If pressure is increased to 0.7 MPa, the push force rises to 1374N.
The rear adjuster screw acts as a mechanical stop, allowing you to trim the effective travel back by up to 30mm from the 35mm nominal stroke. This creates a usable travel window of 5 to 35mm, which can be fine-tuned during setup without changing the cylinder's physical mounting.
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