This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID63X400, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X400
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X400 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 400mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID63X400, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke400 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → B04-SAID63X400
- 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 B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X400
The B04-SID63X400 is an AirTAC double-rod ISO 15552 cylinder where the B04- prefix marks it as the construction-machinery dedicated variant of the base SID63X400. Mechanically identical to the standard model, it features a rod exiting both ends on one piston so both faces use the rod-side area, making push and pull force equal at 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. The bore is 63 mm, the port is G3/8, and the rod thread is M16x1.5. This SID model is discontinued and end-of-life; the direct replacement is the SAID63X400, sharing the same ISO 15552 interface, bore, stroke, force, port and mounting.
Because the second rod drives a sensor cam or a second tool while resisting rotation, a double-rod design adds mechanical stability. The SAI replacement upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure and long life. This non-magnetic SKU cannot take a switch. Note that air cushions only decelerate; for load holding on air loss, use an external rod lock or SAIL/BSAI variant.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X400 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X400 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID63X400 |
| Bore size | Ø63 mm |
| Stroke | 400 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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 standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The B04-SAID63X400 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The B04-SAID63X400 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X400
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×400 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X400 Is Used
Excavator Linkage Actuation
Drives dual-tool mechanisms on heavy-equipment with equal push and pull force, utilizing the G3/8 port and ISO 15552 mounting for rigid construction-machinery frames.
Crusher Feed Control
Regulates material flow in quarrying attachments where the 1402 N @0.5 MPa equal-both-ways force and anti-rotation properties of the twin rods maintain precise gating.
Paver Flap Synchronization
Operates dual opposing hopper doors on road paving machinery, using the 63 mm bore and 400 mm stroke to balance loads without twisting the assembly.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X400 with the B04-SAID63X400
To replace the discontinued B04-SID63X400, specify the direct replacement SAID63X400, which reuses the exact ISO 15552 mounting interface (Basic, FA, LB, TC) and G3/8 port. Size both ways by confirming the 1402 N @0.5 MPa equal force is sufficient, or step up to the 80 mm bore (2268 N) if more thrust is needed. A double-rod cylinder is right when you need anti-rotation stability or must drive two tools from one piston. This SKU lacks the -S magnet and cannot take a sensor. At 400 mm stroke, use external guides to prevent rod bending under side loads. A plain cylinder drifts on air loss; cushions only decelerate.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID63X400
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X400 FAQ
Yes, the B04-SID63X400 is discontinued. The direct replacement is the SAID63X400. The B04- prefix simply marks it as the construction-machinery dedicated variant of the SID63X400, so the SAID63X400 matches its 63 mm bore, 400 mm stroke, G3/8 port, and ISO 15552 mounting exactly.
As a double-acting double-rod cylinder, force is equal both ways: 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. The air port is G3/8.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID63X400
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAID63X400 replacement — usually within 7-8 hours.