This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID100X100, 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.

The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X100 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 100mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID100X100, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC B04-SID100X100 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, yielding equal force in both directions (3681 N at 0.5 MPa). The B04- prefix marks this as AirTAC's construction-machinery dedicated variant of the base SID100X100, mechanically identical to it. This SID model is discontinued; the direct replacement is the SAID100X100. It shares the same G1/2 port, M20x1.5 rod thread, and 3681 N equal-both-ways force.
Because both faces use the rod-side area, the second rod can drive two tools or carry a sensor cam while resisting rotation. The SAI upgrade uses a two Y-shaped one-way piston seal for low start-up pressure. Note this non-magnetic SKU cannot take switches, and air cushions only decelerate; use SAIL or BSAI for load holding.
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID100X100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID100X100 |
| Bore size | Ø100 mm |
| Stroke | 100 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-SAID100X100 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| 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-SAID100X100 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×100 | 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).
Drives dual-tool mechanisms on heavy equipment with equal push and pull force, leveraging the rigid ISO 15552 interface to withstand construction-site shocks.
Uses the double-rod geometry to prevent rotation during linear extension, ensuring precise alignment of structural components without twist.
Simultaneously operates two opposing attachment points from one piston, relying on the 3681 N equal both-ways force for balanced load handling.
To replace the discontinued B04-SID100X100, specify the SAID100X100 direct: it matches the ISO 15552 interface, 100 mm bore, 100 mm stroke, G1/2 port, and 3681 N equal-both-ways force. Size both ways by checking neighbor bores (80 mm yields 2268 N, 125 mm yields 5734 N at 0.5 MPa) to ensure the equal pull/push fits your load. A double rod is right when you need anti-rotation or dual-tool driving. Reuse FA, LB, or TC mounts. This SKU lacks the -S magnet, so it cannot accept sensors. For stroke >=300 mm, verify side-load bearing limits.
Replacement checklist
Yes, the B04-SID100X100 (construction-machinery dedicated variant) is discontinued. The direct replacement is the SAID100X100. It shares the identical ISO 15552 mounting interface, 100 mm bore, 100 mm stroke, G1/2 port, and equal both-ways force. The SAI family also adds upgraded seals and lock variants like SAIL and BSAI.
Force is equal both ways: 3681 N at 0.5 MPa, 5153 N at 0.7 MPa, and 6626 N at 0.9 MPa. It never quotes a larger single-rod push value. The bore uses a G1/2 air port, an M20x1.5 rod thread, and adjustable 36 mm cushions.
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAID100X100 replacement — usually within 7-8 hours.