This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID32X400, 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-SID32X400
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X400 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø32mm bore and 400mm stroke, G1/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID32X400, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke400 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → B04-SAID32X400
- 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-SID32X400
The AirTAC B04-SID32X400 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, generating equal force in both directions (345 N at 0.5 MPa). The B04- prefix marks this as a construction-machinery dedicated variant of the base SID32X400, mechanically identical with a 32 mm bore, 400 mm stroke, and G1/8 port. This legacy model is discontinued.
The direct replacement is the SAID32X400, sharing the same ISO 15552 mounting interface, bore, stroke, and equal-both-ways force. The SAI family uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure. Note this SKU lacks a magnet (-S) and cannot take sensors.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X400 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X400 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID32X400 |
| Bore size | Ø32 mm |
| Stroke | 400 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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, 27 mm |
| Max standard stroke | Up to 1000 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The B04-SAID32X400 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The B04-SAID32X400 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-SID32X400
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 32 | 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-SID32X400 Is Used
Excavator Panel Pusher
Drives simultaneous opposing actions in heavy-equipment cabins, using the double rod's equal both-ways force to push and pull panels without anti-rotation issues.
Loader Linkage Actuator
Handles equal push and pull loads on construction machinery linkages where a single-rod cylinder would create unequal force, ensuring smooth bidirectional movement.
Crane Boom Guide
Employs the back rod as a sensor cam or secondary drive in tight heavy-equipment assemblies, maximizing utility from a single 32 mm bore actuator.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID32X400 with the B04-SAID32X400
To replace the discontinued B04-SID32X400, use the SAID32X400 directly; it preserves the 32 mm bore, 400 mm stroke, G1/8 port, and ISO 15552 mounting. Because force is equal both ways, verify your push and pull requirements against the 345 N @0.5 MPa rating. If higher force is needed, step up to the 40 mm bore. A double rod is ideal when you need anti-rotation stability or must drive two tools simultaneously. This non-magnetic SKU cannot use sensors. For the 400 mm stroke, use external guides to prevent rod bending under side loads. It does not hold loads on air loss; use an external rod lock or SAIL/BSAI variant for holding.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID32X400
- ✓ 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-SID32X400 FAQ
Yes, the B04-SID32X400 is discontinued. The direct replacement is the SAID32X400. The B04- prefix simply denotes the construction-machinery dedicated variant, so the SAID32X400 matches its 32 mm bore, 400 mm stroke, G1/8 port, and ISO 15552 mounting exactly.
Force is equal both ways: 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. The air port is G1/8. A plain cylinder does not hold loads on air loss; the cushion only decelerates near stroke end.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID32X400
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAID32X400 replacement — usually within 7-8 hours.