Airtac SAIJ50 Adjustable Cylinder SAIJ50BX500-30
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX500-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 500mm 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
- Stroke500 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 SAIJ50BX500-30
The AirTAC SAIJ50X500-30 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 500 mm nominal stroke by up to 30 mm for a precise 470-500 mm usable travel window. It delivers 982 N of push force at 0.5 MPa, making it well-suited for mid-range actuation tasks. This configuration features a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered ports.
Unlike a fixed-stroke SAI cylinder, this model lets you fine-tune the retract end position during commissioning without adding external stops. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU lacks the -S magnet required for CMSE or DMSE switches. Remember that the rear adjuster acts strictly as a travel stop, not a lock, and cannot hold a load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX500-30 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX500-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 500 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 SAIJ50BX500-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×500 | 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 SAIJ50BX500-30 Is Used
Variable End-Stop Tuning
Dial in the exact retract position within the 470-500 mm window during machine setup without swapping cylinders or fabricating external stop blocks.
Product Changeover
Quickly adjust the stroke end by up to 30 mm to accommodate different package sizes on a packaging line, reducing downtime between production runs.
Corrosion-Resistant Actuation
Leverage the SUS304 stainless steel rod for mid-force pushing tasks in environments where moisture or mild chemicals would degrade standard carbon steel.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX500-30 the Right Cylinder?
Choose this 50 mm bore when you need more thrust than the 40 mm version (628 N at 0.5 MPa) but want a smaller footprint than the 63 mm option (1559 N). The adjustable 470-500 mm window is ideal for product changeovers on a line where exact end-of-travel positioning varies slightly. Because the stroke is 500 mm, the 20 mm rod diameter requires external guiding to prevent excessive side-loading and premature seal wear.
This cylinder is dimensionally interchangeable per ISO 15552. To match this exact unit, specify: 50 mm bore, 500 mm stroke, 30 mm adjustment, PT ports, SUS304 (B) rod material, and no magnet. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. If your application requires true load-holding without continuous air pressure, consider the SAIL or BSAI series instead.
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 SAIJ50BX500-30 FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At 0.7 MPa, the push force increases to 1374 N.
The rear adjuster screw acts as a mechanical stop that shortens the effective travel from the nominal 500 mm down to as little as 470 mm. It allows fine-tuning of the end position at commissioning but does not lock the load without live air.
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