Airtac SAID50 Double Rod Cylinder SAID50BX400S
The AirTAC Airtac SAID50 Double Rod Cylinder SAID50BX400S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 400mm 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
- Stroke400 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 SAID50 Double Rod Cylinder SAID50BX400S
The AirTAC SAID50X400-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 50 mm bore and 400 mm stroke. Because the twin rods occupy both sides of the piston, the effective annulus area is identical in each direction, yielding an equal push and pull force of 825 N at 0.5 MPa. The integrated -S magnet enables position sensing via CMSE reed or DMSE solid-state switches along the dual sensor grooves.
Equipped with a SUS304 stainless steel rod, this variant provides superior corrosion resistance for demanding environments. The through-rod design allows one end to drive the primary workload while the opposite rear rod end mounts a cam, limit flag, or secondary mechanism, ensuring exceptional anti-rotation guidance. It uses adjustable air cushions at both ends to decelerate the piston near stroke limits.
Airtac SAID50 Double Rod Cylinder SAID50BX400S Technical Specifications
| Model | Airtac SAID50 Double Rod Cylinder SAID50BX400S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 400 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 SAID50 Double Rod Cylinder SAID50BX400S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×400 | 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 SAID50 Double Rod Cylinder SAID50BX400S Is Used
Symmetric Transfer Unit
Drives a transfer carriage with equal force and speed in both directions, preventing jerky movements during rapid forward and return strokes.
Twin-Station Actuation
Simultaneously operates two separate mechanisms from one piston, using the front rod for the primary work and the rear rod for secondary timing.
Anti-Rotation Guide Slide
Leverages the dual through-rods to keep the mounted tooling perfectly guided against rotational torque without external linear bearings.
Is the Airtac SAID50 Double Rod Cylinder SAID50BX400S the Right Cylinder?
Select this 50 mm bore model when an application demands symmetric force and speed both ways, stepping up from a 40 mm bore (528 N at 0.5 MPa) for higher capacity, or stepping down from a 63 mm bore (1402 N at 0.5 MPa) for a lighter footprint. The double-rod architecture is chosen over a single-rod SAI when twin-station actuation or rear-rod sensing is required. To mount this cylinder, use the SAID accessory set: Basic, FA, LB, TC, FTC, TCM1, or TCM2.
At 400 mm of stroke, the unsupported rod length increases bending moments on the rod bearing; utilize an external guide rail to prevent excessive side-load wear. Note that this cylinder relies on live air pressure to move and decelerate; it does not hold a load if air is exhausted or a valve is centered. For position holding without pressure, consider an external pilot-operated check valve or a BSAID clamp-lock cylinder. It is dimensionally interchangeable per ISO 15552.
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 SAID50 Double Rod Cylinder SAID50BX400S FAQ
Because it is a double-rod cylinder, the force is equal in both extend and retract directions. It provides 825 N at 0.5 MPa, 1154 N at 0.7 MPa, and 1484 N at 0.9 MPa.
Yes, the SAID50X400-S is dimensionally interchangeable with other ISO 15552 double-rod profile cylinders. It uses a PT G1/4 port and accepts standard ISO 15552 mounting accessories like FA, LB, and TC.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac SAID50 Double Rod Cylinder SAID50BX400S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.