This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID100X250, 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-SID100X250
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X250 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 250mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID100X250, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke250 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAID100X250
- 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-SID100X250
The AirTAC B04-SID100X250 is a double-acting, double-rod ISO 15552 cylinder where the B04- prefix marks it as the construction-machinery dedicated variant of the base SID100X250, mechanically identical to it. Because a rod exits both ends on one piston, both faces use the rod-side area, meaning push and pull force are equal at 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. This model is discontinued and the direct replacement is the SAID100X250, sharing the same G1/2 port, M20x1.5 rod thread, and 36 mm adjustable cushion. The double-rod design prevents rotation and lets the back rod drive a second tool, while the SAI upgrade uses a two Y-shaped one-way piston seal for low start-up pressure.
Operating pressure spans 0.15-1.0 MPa with proof at 1.5 MPa, and standard temperature is -20 to +70 C. This specific SKU lacks the -S magnet and cannot take a magnetic switch. A plain cylinder does not hold its load on air loss; the cushion only decelerates near stroke end, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X250 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X250 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID100X250 |
| Bore size | Ø100 mm |
| Stroke | 250 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The B04-SAID100X250 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The B04-SAID100X250 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-SID100X250
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | 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-SID100X250 Is Used
Excavator Linkage Actuation
Uses the equal both ways force and anti-rotation rigidity of the double rod to drive synchronized positioning links on heavy construction machinery without twist.
Crusher Feed Gate
Employs the back rod end to mount a secondary mechanical stop, applying 5153 N @0.7 MPa to hold material flow gates on aggregate processing equipment.
Loader Boom Sync
Balances parallel loader arms by pushing and pulling with identical 3681 N @0.5 MPa force, preventing uneven wear in harsh construction environments.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X250 with the B04-SAID100X250
To replace the discontinued B04-SID100X250, install the direct replacement SAID100X250, which preserves the exact ISO 15552 mounting interface, 250 mm stroke, G1/2 port, and equal-both-ways force. Size both directions by checking neighbor bores if you need more or less power, but the 100 mm bore delivers 3681 N @0.5 MPa equally on push and pull. A double-rod cylinder is right when you need anti-rotation stability or want to drive two tools from one piston. Reuse FA, LB, or TC mounts. Since this SKU has no -S magnet, it cannot use sensors. For this 250 mm stroke, side-load is minimal, but for strokes >=300 mm ensure guide alignment to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID100X250
- ✓ 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-SID100X250 FAQ
Yes, the B04-SID100X250 is discontinued. The direct replacement is the SAID100X250. The B04- prefix simply marks it as the construction-machinery dedicated variant of SID100X250, so the SAID100X250 matches it mechanically with the same ISO 15552 interface, bore, stroke, G1/2 port, and mounting.
Force is equal both ways at 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. The bore is 100 mm with a G1/2 port, M20x1.5 rod thread, and 36 mm cushion. It lacks a -S magnet so it cannot take sensors.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID100X250
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