Airtac SAIJ50 Adjustable Cylinder SAIJ50BX175-40S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX175-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 175mm 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
- Stroke175 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 SAIJ50BX175-40S
The AirTAC SAIJ50X175-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a usable travel window of 135 to 175 mm, allowing you to dial in the exact end position during commissioning without adding external stops. In the 50 mm bore class, it delivers 982 N of push force and 825 N of pull force at 0.5 MPa.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and includes a built-in magnet for CMSE and DMSE sensors. The extruded aluminum barrel has sensor grooves on both sides, and the rear adjuster acts purely as a mechanical stop to set deceleration, not to hold the load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX175-40S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX175-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 175 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 SAIJ50BX175-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×175 | 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 SAIJ50BX175-40S Is Used
Machine Changeover
Quickly fine-tune the retract end position by up to 40 mm when switching production lines to accommodate slightly different product lengths.
Variable End Stops
Dial in precise end-of-stroke positioning during commissioning without the need to bolt on custom external physical stops.
Product Size Changes
Adjust the cylinder travel window on the fly to handle varying package dimensions on packaging and sorting conveyors.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX175-40S the Right Cylinder?
Select this 50 mm bore when you need more thrust than the 40 mm class (628 N at 0.5 MPa) but want a lighter frame than the 63 mm bore (1559 N). An adjustable stroke is ideal for product changeovers on a line, letting you fine-tune the retract end by up to 40 mm instead of swapping a fixed-stroke SAI cylinder. To replace this ISO 15552 cylinder, match the 50 mm bore, 175 mm stroke, PT tapered port threads, and the -S magnet requirement.
Because the nominal stroke is 175 mm, side loads are moderate, but you should still ensure proper guiding for long unsupported rods. Note that the SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options. If your application requires true load-holding without continuous air pressure, use an external rod lock or pilot-operated check valve, or switch to the SAIL or BSAI series.
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 SAIJ50BX175-40S FAQ
The rear adjusting screw lets you shorten the effective nominal stroke by up to 40 mm. This creates a usable travel window of 135 to 175 mm, allowing precise end-position tuning without replacing the cylinder.
At an operating pressure of 0.5 MPa, the SAIJ50X175-40-S provides 982 N of push force and 825 N of pull force. At the maximum pressure of 1.0 MPa, it delivers up to 200 kgf.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAIJ50 Adjustable Cylinder SAIJ50BX175-40S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.