This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID40X175, 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-SID40X175
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X175 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 175mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID40X175, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke175 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → B04-SAID40X175
- 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-SID40X175
The AirTAC B04-SID40X175 is a double-acting, double-rod ISO 15552 cylinder where a rod exits both ends, yielding equal force both ways (528 N at 0.5 MPa). The B04- prefix marks this as a construction-machinery dedicated variant of the base SID40X175, mechanically identical in every spec. This SKU lacks the -S magnet, so it cannot accept magnetic switches. The bore uses a G1/4 port, a 16 mm rod, and M12x1.25 threads.
This SID model is discontinued and directly replaced by the SAID40X175 direct. The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Because both faces use the rod-side area, push and pull force are identical. 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-SID40X175 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X175 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID40X175 |
| Bore size | Ø40 mm |
| Stroke | 175 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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, 27 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The B04-SAID40X175 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
The B04-SAID40X175 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-SID40X175
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×175 | 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-SID40X175 Is Used
Excavator Linkage Control
Equal push and pull force drives dual-action construction machinery linkages where reversal symmetry is critical for precise positioning.
Heavy Equipment Material Handling
The through-rod design provides anti-rotation stability for pushing and pulling heavy components on assembly lines without guide binding.
Synchronized Loader Actuation
Drives two opposing tools or gates simultaneously from a single piston, ensuring perfectly synchronized motion for heavy-equipment loading.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X175 with the B04-SAID40X175
To replace the discontinued B04-SID40X175, order the direct replacement SAID40X175, which preserves the 40 mm bore, 175 mm stroke, G1/4 port, and ISO 15552 mounting interface (Basic, FA, LB, TC). Size both ways by checking equal force at neighboring bores: the 32 mm yields 345 N, while the 50 mm provides 825 N at 0.5 MPa. Choose a double-rod cylinder when you need anti-rotation stability or must drive two tools simultaneously. This non-magnetic SKU cannot take sensors; if position feedback is required, select an -S magnet model. For strokes of 300 mm or longer, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID40X175
- ✓ 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-SID40X175 FAQ
Yes, the B04-SID40X175 construction-machinery dedicated cylinder is discontinued. The direct replacement is the SAID40X175, sharing the identical ISO 15552 interface, 40 mm bore, 175 mm stroke, and G1/4 port. The B04- prefix only denotes the construction industry variant; mechanically it matches the base SID40X175.
Because it is a double-rod cylinder, force is equal both ways: 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa. The air port is G1/4. Remember that air cushions only decelerate near stroke end; they do not hold loads on air loss.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID40X175
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAID40X175 replacement — usually within 7-8 hours.