This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID63X250, 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-SID63X250
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X250 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 250mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID63X250, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke250 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → B04-SAID63X250
- 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-SID63X250
The AirTAC B04-SID63X250 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends on one piston, ensuring push and pull force are equal at 1402 N @0.5 MPa, 1962 N @0.7 MPa, and 2523 N @0.9 MPa. The leading B04- prefix marks this as AirTAC's construction-machinery dedicated variant, mechanically identical to the base SID63X250 with a 63mm bore, 250mm stroke, G3/8 port, and M16x1.5 rod thread. This SKU has no -S magnet and cannot carry a sensor.
This SID model is discontinued and replaced by the direct replacement SAID63X250, which reuses the exact ISO 15552 mounting interface and adjustable 30mm cushions. The SAI upgrade uses an advanced two Y-shaped one-way piston seal for low start-up pressure. 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-SID63X250 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X250 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID63X250 |
| Bore size | Ø63 mm |
| Stroke | 250 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-SAID63X250 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-SAID63X250 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-SID63X250
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×250 | 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-SID63X250 Is Used
Excavator Linkage Actuation
Drives synchronized dual-tool mechanisms on heavy equipment, using the equal both-ways force to push and pull linkage components with consistent 1402 N @0.5 MPa power.
Crane Load Stabilization
Provides anti-rotation stability for guided loads in construction machinery frames, utilizing the double-rod design to maintain precise alignment without twisting.
Heavy Equipment Fixture Shift
Shifts clamping fixtures equally in two directions, leveraging the 71 kg vertical lift capacity and equal push/pull areas for balanced material handling.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID63X250 with the B04-SAID63X250
Replace the discontinued B04-SID63X250 directly with the SAID63X250, matching the 63mm bore, 250mm stroke, G3/8 port, and equal both-ways force. Size both directions by checking neighboring bores (50mm or 80mm) to ensure the 1402 N @0.5 MPa baseline fits your system. Choose a double-rod configuration when you need anti-rotation stability or need to drive two tools simultaneously. Mounting options include Basic, FA, LB, and TC. For strokes of 300mm or longer, verify side-load limits to prevent guide wear. This non-magnetic SKU cannot accept switches; if sensing is needed, select a -S magnet model.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID63X250
- ✓ 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-SID63X250 FAQ
Yes, the B04-SID63X250 is discontinued. The direct replacement is the SAID63X250. The B04- prefix simply denotes the construction-machinery dedicated variant; the SAID63X250 matches its 63mm bore, 250mm stroke, G3/8 port, and ISO 15552 mounting interface exactly.
Because it is a 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 bore is 63mm, the air port is G3/8, the rod thread is M16x1.5, and it features 30mm adjustable cushions. It operates at 0.15-1.0 MPa with speeds of 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID63X250
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAID63X250 replacement — usually within 7-8 hours.