This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID40X700, 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-SID40X700
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X700 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 700mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID40X700, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke700 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → B04-SAID40X700
- 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-SID40X700
The B04-SID40X700 is AirTAC's construction-machinery dedicated variant of the SID40X700 double-rod ISO 15552 cylinder. The B04- prefix designates its heavy-equipment industry fit without altering the physical specs. A rod exits both ends on one piston, meaning both faces use the rod-side area and push/pull force is equal at 528N @0.5MPa, 739N @0.7MPa and 950N @0.9MPa. It has a 16mm rod, M12x1.25 thread, G1/4 port and 27mm adjustable cushions. This model is discontinued; the direct replacement is SAID40X700.
The SAI upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. Double-rod benefits include anti-rotation and driving two tools. This SKU has no -S magnet and cannot take a sensor. Air cushions only decelerate; use an external rod lock or SAIL/BSAI for held loads.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X700 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X700 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID40X700 |
| Bore size | Ø40 mm |
| Stroke | 700 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-SAID40X700 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-SAID40X700 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-SID40X700
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×700 | 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-SID40X700 Is Used
Excavator Linkage
Equal both-ways force and anti-rotation stability serve dual-acting construction machinery linkage arms where consistent push and pull strength is mandatory.
Heavy Equipment Transfer
The 700mm stroke and double-rod design drive synchronized material transfer stations on heavy equipment assembly lines, moving loads from both ends.
Crane Mechanism
Provides equal push/pull force for balanced positioning of crane counterweight mechanisms, with the G1/4 port fitting standard construction machinery pneumatics.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X700 with the B04-SAID40X700
Replace the discontinued B04-SID40X700 directly with SAID40X700, reusing the exact ISO 15552 mounting interface (Basic, FA, LB, TC) and G1/4 port. Size both ways by checking neighbour bores (32mm or 50mm) for equal push/pull force. A double rod is right when you need anti-rotation or a back rod to drive a second tool. For the 700mm stroke, add external guides to prevent rod bending under side-load. Select the -S magnet suffix if you need sensor tracking, as this no-magnet SKU cannot take switches.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID40X700
- ✓ 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-SID40X700 FAQ
Yes, the B04-SID40X700 (construction-machinery dedicated SID40X700) is discontinued. The direct replacement is SAID40X700, offering the same ISO 15552 interface, 40mm bore, 700mm stroke, G1/4 port and equal both-ways force.
Force is equal both ways: 528N @0.5MPa, 739N @0.7MPa, 950N @0.9MPa. The bore is 40mm, rod is 16mm, thread is M12x1.25, and the air port is G1/4. Speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID40X700
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAID40X700 replacement — usually within 7-8 hours.