This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID50X160, 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-SID50X160
The AirTAC B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID50X160 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 160mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID50X160, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke160 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → B04-SAID50X160
- 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-SID50X160
The AirTAC B04-SID50X160 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 of the base SID50X160, mechanically identical with a G1/4 port and M16x1.5 rod thread. This SID model is discontinued; the direct replacement is the SAID50X160, which adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
Because both faces use the rod-side area, force is identical in both directions. A back rod can carry a sensor cam or drive two tools, though this specific SKU lacks the -S magnet and cannot take a switch. Note that air cushions only decelerate; for load holding without live air, use an external rod lock or SAIL/BSAI variant.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID50X160 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID50X160 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID50X160 |
| Bore size | Ø50 mm |
| Stroke | 160 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-SAID50X160 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-SAID50X160 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-SID50X160
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×160 | 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-SID50X160 Is Used
Excavator Linkage
Equal push/pull force synchronizes dual-tool actuation on heavy-equipment articulation joints.
Loader Material Gate
Anti-rotation stability from the double-rod design prevents binding during abrasive aggregate flow.
Crusher Feed Pusher
Drives opposing mechanisms from one piston, saving space in tight construction-machinery frames.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID50X160 with the B04-SAID50X160
To replace the discontinued B04-SID50X160, specify SAID50X160 for an exact ISO 15552 direct match (bore, stroke, G1/4 port, mounting). Size both ways using the equal-force chart: this 50mm bore yields 825 N @0.5 MPa; step down to 40mm for 528 N or up to 63mm for 1402 N. Choose a double-rod cylinder when you need anti-rotation stability or to drive two tools. Reuse FA, LB, or TC mounts. This SKU has no -S magnet, so it cannot support sensing. For strokes >=300mm, verify side-load limits to prevent binding.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID50X160
- ✓ 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-SID50X160 FAQ
Yes, the B04-SID50X160 (construction-machinery dedicated variant of SID50X160) is discontinued. The direct replacement is the SAID50X160, sharing the same ISO 15552 interface, 50mm bore, 160mm stroke, G1/4 port, and mounting. The SAI upgrade features a two Y-shaped one-way piston seal for longer life.
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 a 30mm adjustable cushion, but note this SKU lacks the -S magnet and cannot take a sensor.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID50X160
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAID50X160 replacement — usually within 7-8 hours.