This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID50X100, 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-SID50X100
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID50X100 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 100mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID50X100, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke100 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → B04-SAID50X100
- 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-SID50X100
The AirTAC B04-SID50X100 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, yielding equal push and pull force (825 N @0.5 MPa). The B04- prefix marks this as AirTAC's construction-machinery dedicated variant, mechanically identical to the standard SID50X100 with a 50mm bore, 100mm stroke, and G1/4 air port. This legacy model is discontinued and directly replaced by the SAID50X100.
The SAID direct uses an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. A double-rod design prevents rotation and lets the back rod drive a second tool. Note: this non-magnetic SKU cannot take sensors, and air cushions only decelerate; use an external rod lock for load holding.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID50X100 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID50X100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID50X100 |
| Bore size | Ø50 mm |
| Stroke | 100 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| 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 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The B04-SAID50X100 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The B04-SAID50X100 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-SID50X100
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | 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).
Where the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID50X100 Is Used
Excavator Linkage
Equal-both-ways force drives mirrored positioning arms on heavy-equipment cabs without rod-side force drop.
Loader Material Gate
The second rod acts as a mechanical cam for limit switches, replacing missing magnetic sensors on this non-S SKU.
Crusher Tool Sync
Anti-rotation stability from the double-rod design keeps rock-crushing jaws aligned under high vibration.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID50X100 with the B04-SAID50X100
To replace the discontinued B04-SID50X100, use the direct replacement SAID50X100—same ISO 15552 interface, 50mm bore, 100mm stroke, G1/4 port, and equal-both-ways force. Size both directions by verifying the 825 N @0.5 MPa output fits your load, or step to neighbouring bores (40mm or 63mm) if margins require. A double-rod cylinder is right when you need anti-rotation or must drive two tools. Mounting options include FA, LB, and TC. Because this SKU lacks the -S magnet, it cannot use sensors. For strokes >=300mm, verify side-load limits to prevent binding.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID50X100
- ✓ 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-SID50X100 FAQ
Yes, the B04-SID50X100 (construction-machinery dedicated SID50X100) is discontinued. The direct replacement is the SAID50X100, which shares the identical ISO 15552 mounting interface, 50mm bore, 100mm stroke, G1/4 port, and equal-both-ways force. The SAI family also adds upgraded piston seals and lock variants.
Force is equal both ways: 825 N @0.5 MPa, 1154 N @0.7 MPa, and 1484 N @0.9 MPa. The air port is G1/4. The cylinder operates at 0.15-1.0 MPa with adjustable 30mm cushions, but it cannot hold loads without live air.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID50X100
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAID50X100 replacement — usually within 7-8 hours.