Airtac SAIJ50 Adjustable Cylinder SAIJ50AX800-50
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX800-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 800mm 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
- Stroke800 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 SAIJ50AX800-50
The AirTAC SAIJ50X800-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 982N push force at 0.5 MPa and allows you to dial back the nominal 800mm travel by up to 50mm, creating a precise 750-800mm usable stroke window for exact end-position tuning.
This variant uses a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement, while the rear adjuster acts strictly as a mechanical stop to fine-tune travel without needing live air to hold the load.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX800-50 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX800-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 800 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 SAIJ50AX800-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×800 | 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 SAIJ50AX800-50 Is Used
Product Changeover
Dial in the exact 750-800mm retract position on packaging lines when product dimensions change, avoiding mechanical rebuilds.
Long-Stroke Diverting
Adjusts the end-stop for varying package sizes on a sorting conveyor without needing to reposition the entire cylinder assembly.
Machine Commissioning
Fine-tune the end-of-travel position during equipment setup to perfectly time the 982N thrust delivery without adding external stop blocks.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX800-50 the Right Cylinder?
Choose this 50mm bore when an application requires 982N of push force at 0.5 MPa (or 1374N at 0.7 MPa). If your machine needs less force, stepping down to a 40mm bore yields 628N at 0.5 MPa, whereas a 63mm bore provides 1559N. The adjustable 750-800mm travel window is ideal for product changeovers, letting you fine-tune the retract position at commissioning without swapping the cylinder or adding external stops.
Because the 800mm stroke is quite long, the 20mm rod diameter and M16x1.25 rod thread will still experience leverage forces; an external guide is strongly recommended to prevent side-loading damage. Remember that the rear adjuster is a travel stop, not a lock—this SAIJ cylinder will not hold a load without live air pressure. For position holding, consider an AirTAC SAIL or BSAI cylinder. This model is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). It operates at 30-800mm/s and has no magnet (-S not specified).
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 SAIJ50AX800-50 FAQ
At 0.5 MPa operating pressure, this 50mm bore cylinder provides 982N of push force and 825N of pull force. If you need more thrust, stepping up to a 63mm bore yields 1559N at the same pressure.
The rear adjusting screw lets you shorten the 800mm nominal stroke by up to 50mm, providing a usable travel window of 750-800mm. The adjuster acts as a mechanical stop to fine-tune the end position, but it is not a lock and requires live air to hold the load.
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