Airtac SAID40 Double Rod Cylinder SAID40AX950
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX950 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 950mm 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.
- BoreØ40 mm
- Stroke950 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX950
The AirTAC SAID40X950 is a double-acting, double-rod profile cylinder built to ISO 15552 dimensional standards, featuring a 40mm bore and a 950mm made-to-order stroke. Because a rod exits both end covers, the annulus area is identical on both sides, yielding exactly 528N of force in both extend and retract directions at 0.5MPa.
This variant uses a SUS420J2 stainless steel rod (option A) for superior corrosion resistance and includes adjustable air cushioning at both ends to decelerate the payload smoothly. The extruded aluminum barrel features sensor grooves on both sides for CMSE reed or DMSE solid-state switches, though this specific configuration ships without a magnet. Remember that the through-rod design requires extra rear clearance compared to a single-rod SAI.
Airtac SAID40 Double Rod Cylinder SAID40AX950 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX950 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 950 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAID40 Double Rod Cylinder SAID40AX950
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×950 | 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 SAID40 Double Rod Cylinder SAID40AX950 Is Used
Symmetric Transfer Unit
Transfers parts between two stations with identical 528N force and speed in both directions, ensuring no timing delay between the advance and return strokes.
Anti-Rotation Slide
Uses the dual-rod guidance to prevent mechanical twisting on a 950mm travel slide, keeping the tool plate perfectly aligned without external guides.
Rear-Cam Actuation
Drives a primary workpiece on the front rod while the rear rod end protrudes to trigger a mechanical limit valve or cam for secondary sequencing.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX950 the Right Cylinder?
Select this 40mm bore when an application demands equal push and pull forces of 528N at 0.5MPa alongside a lengthy 950mm stroke. Stepping down to a 32mm bore drops the both-way force to 345N, while upgrading to a 63mm bore raises it to 1402N. The twin-rod architecture is chosen over a single-rod SAI when you need to mount a workpiece on one end and a cam or position flag on the other, providing dual-side guidance and better resistance to torsional rotation.
Because this 950mm stroke exceeds the 800mm standard maximum, it is manufactured as a non-standard order. At this extended length, the 16mm rod is highly susceptible to side-load bending and rod-bearing wear, so an external guide rail is strongly recommended to support the load. Furthermore, the adjustable end cushions only decelerate the piston near stroke end and do not hold a load; if air pressure drops, the cylinder drifts. For position holding without live pressure, consider an SAIL or BSAID lock cylinder. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR styles found on single-rod variants. Porting is PT tapered thread.
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 SAID40 Double Rod Cylinder SAID40AX950 FAQ
Because the double-rod design subtracts the rod area on both sides, the extend and retract forces are equal. It generates 528N at 0.5MPa, 739N at 0.7MPa, and 950N at 0.9MPa in both directions.
Yes, the SAID profile cylinder is dimensionally interchangeable per ISO 15552 mounting standards. It uses the standard Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounting interfaces, though you must account for the extra physical clearance needed for the rear rod protrusion.
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