Airtac SAIJ50 Adjustable Cylinder SAIJ50BX200-30
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX200-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 200mm 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
- Stroke200 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 SAIJ50BX200-30
The AirTAC SAIJ50X200-30 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that creates a 170-200 mm usable travel window from its 200 mm nominal stroke. It delivers 982 N of push force at 0.5 MPa, making it well-suited for moderate-load positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This specific configuration uses a SUS304 stainless steel rod for superior corrosion resistance and features PT tapered port threads. By turning the external rear stopper, you can fine-tune the retract end-position at commissioning without adding external stops. The adjuster functions only as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX200-30 Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX200-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 200 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 SAIJ50BX200-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×200 | 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 SAIJ50BX200-30 Is Used
Machine Changeover
Dial in the exact retract position within the 170-200 mm window when switching product sizes on a line, eliminating the need to physically swap cylinders.
End-Position Tuning
Fine-tune the final resting point during commissioning to align tooling perfectly, using the rear stopper instead of machining custom external spacers.
Moderate-Load Positioning
Leverage the 982 N push force at 0.5 MPa to push or lift medium-weight fixtures securely into their designated work stations.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX200-30 the Right Cylinder?
Choose this 50 mm bore cylinder when you need 982 N of thrust at 0.5 MPa, stepping up from a 40 mm bore (628 N) for heavier pushing tasks, or down from a 63 mm bore (1559 N) when a smaller footprint is preferred. The adjustable stroke is ideal for machine setups requiring variable end-stops or product changeovers, avoiding the need to swap out a fixed-stroke SAI cylinder. To match this ISO 15552 replacement exactly, specify the 200 mm stroke, 30 mm adjustment, PT port threads, SUS304 (B) rod material, and no magnet.
Because the nominal stroke is 200 mm, an external guide is recommended to prevent excessive side-loading on the rod. For applications requiring true load-holding without live air pressure, consider the SAIL or BSAI series instead, as this cylinder's rear adjuster is a stop, not a lock.
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 SAIJ50BX200-30 FAQ
The rear stopper allows you to shorten the effective stroke by up to 30 mm, creating a 170-200 mm usable travel window. It acts as a mechanical stop to set the end position and is not a lock, meaning it will not hold the load without continuous air pressure.
At 0.5 MPa, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. If you increase the operating pressure to 0.7 MPa, the push force rises to 1374 N.
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