Airtac SAIJ50 Adjustable Cylinder SAIJ50BX500-50S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX500-50S 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 SAIJ50BX500-50S
The AirTAC SAIJ50X500-50-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 500 mm nominal stroke that can be dialed back by up to 50 mm, yielding a precise 450-500 mm usable travel window for commissioning without swapping hardware. Delivering 982 N of push force at 0.5 MPa, it matches standard SAI thrust capabilities while adding external mechanical stops.
This SKU is built with a SUS304 stainless steel piston rod (code B) for superior corrosion resistance and features a PT tapered port thread. The extruded aluminum barrel includes sensor grooves on both sides, and the integrated magnet (-S) supports AirTAC CMSE reed and DMSE electronic solid-state switches. It uses adjustable air cushions at both ends to decelerate the load smoothly.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX500-50S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX500-50S |
|---|---|
| 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 SAIJ50BX500-50S
| 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 SAIJ50BX500-50S Is Used
Changeover Calibration
Dial in the 450-500 mm travel window during product size changeovers on a packaging line without physically replacing the cylinder.
Variable End Stops
Fine-tune the retract position on a long-stroke conveyor sorting mechanism to accommodate varying package lengths.
Machine Setup
Adjust the rear stopper during initial commissioning to perfect the end-of-stroke positioning without adding external mechanical stops.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX500-50S the Right Cylinder?
Choose this 50 mm bore cylinder when an application requires 982 N of push force at 0.5 MPa (or 1374 N at 0.7 MPa) alongside variable end-position tuning. If you need less force, step down to the 40 mm bore offering 628 N; if your load is heavier, step up to the 63 mm bore providing 1559 N. The adjustable stroke is perfect for machine setup and product changeover, eliminating the need to bolt on external stops or buy multiple fixed-stroke SAI cylinders.
Because the nominal stroke is 500 mm, the M16x1.5 rod is highly susceptible to side-loading; an external guide is strongly recommended to prevent premature seal wear. Remember that the rear adjuster acts only as a travel stop, not a lock, so it cannot hold a load without live air. For true load-holding, consider the SAIL or BSAI series. This model uses the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ50BX500-50S FAQ
At 0.5 MPa, 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 operational speed range is 30-800 mm/s.
The rear adjuster screw lets you shorten the effective travel by up to 50 mm, creating a 450-500 mm usable window. This stopper only sets the travel end and decelerates the load via air cushions; it does not lock or hold the load without continuous air pressure.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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