Airtac SAIJ50 Adjustable Cylinder SAIJ50BX200-40S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX200-40S 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 SAIJ50BX200-40S
The AirTAC SAIJ50X200-40-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 160 to 200 mm, allowing you to dial back the 200 mm nominal stroke by up to 40 mm during commissioning. In the 50 mm bore class, it delivers 982 N of push thrust and 825 N of pull thrust at a 0.5 MPa operating pressure.
This unit includes a SUS304 stainless steel rod for superior corrosion resistance and is equipped with a magnet for position sensing. It integrates seamlessly with AirTAC CMSE reed and DMSE electronic solid-state switches mounted in the extruded aluminum barrel's dual sensor grooves. The PT tapered port threads and adjustable air cushions at both ends ensure secure fittings and smooth end-of-stroke deceleration.
Airtac SAIJ50 Adjustable Cylinder SAIJ50BX200-40S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX200-40S |
|---|---|
| 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 SAIJ50BX200-40S
| 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 SAIJ50BX200-40S Is Used
Machine Changeover
Fine-tune the 160-200 mm travel window during product size changes without replacing the cylinder or bolting on external stops.
Variable End-Stop Positioning
Dial in the exact retract distance on a packaging conveyor line to accommodate varying package lengths on the fly.
Corrosive Environment Assembly
Leverage the SUS304 stainless steel rod for reliable clamping and assembly tasks in wash-down or chemical-exposure areas.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50BX200-40S the Right Cylinder?
Choose this 50 mm bore when you need more force than the 40 mm version (628 N push at 0.5 MPa) but want a smaller footprint than the 63 mm option (1559 N). The 40 mm rear adjustment range is ideal for product changeovers on a line, letting you fine-tune the retract end-position without swapping the cylinder or adding external stops. For mounting, SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets, deliberately omitting FB, CA, CB, and CR.
Because this is a 200 mm stroke, the 20 mm rod and M16x1.5 thread handle moderate side loads, but an external guide is recommended for heavy lateral forces. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true pneumatic locking without pressure, consider the SAIL or BSAI series. This cylinder is dimensionally interchangeable per ISO 15552 standards.
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 SAIJ50BX200-40S FAQ
The rear adjuster screw lets you shorten the 200 mm nominal stroke by up to 40 mm, providing an effective travel window of 160 to 200 mm. It acts as a mechanical stop to set the end position and does not function as a lock to hold the load without air pressure.
At 0.5 MPa operating pressure, this 50 mm bore cylinder generates 982 N of push force and 825 N of pull force. It can reach up to 1767 N of push force at 0.9 MPa.
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