This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement B04-SAID40X100, 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-SID40X100
The AirTAC Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X100 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 100mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAID40X100, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke100 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → B04-SAID40X100
- 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-SID40X100
The AirTAC B04-SID40X100 is a double-acting double-rod ISO 15552 cylinder where a rod exits both ends, generating equal force in both directions (528 N at 0.5 MPa). The B04- prefix marks this as a construction-machinery dedicated variant, mechanically identical to the standard SID40X100 with a 40 mm bore, 16 mm rod, G1/4 port, and 100 mm stroke. This legacy model is discontinued and the direct replacement is the SAID40X100, which reuses the exact same ISO 15552 mounting interface and adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life.
Because the rear rod can carry a sensor cam or drive a second tool simultaneously, the double-rod design prevents rotation without external guides. Note this non-magnetic SKU cannot accept reed switches, and a standard cylinder will drift on air loss as the cushion only decelerates near stroke end.
Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X100 Technical Specifications
| Model | Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | B04-SAID40X100 |
| Bore size | Ø40 mm |
| Stroke | 100 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-SAID40X100 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-SAID40X100 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-SID40X100
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | 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-SID40X100 Is Used
Excavator Linkage
Synchronizes dual tool actions on heavy equipment arms, using equal both-ways force to handle robust construction-machinery operations.
Crusher Gate
Operates an opposing gate on a rock crusher, where the double-rod prevents rotation and maintains stable alignment under heavy debris flow.
Loader Valve Arm
Drives a secondary mechanical linkage on a loader, leveraging the rear rod output for an equal-force return without extra valving.
Replacing the Airtac B04-SID Construction Machinery Special ISO Standard Cylinder B04-SID40X100 with the B04-SAID40X100
To replace the discontinued B04-SID40X100, select the SAID40X100, which matches the 40 mm bore, 100 mm stroke, G1/4 port, and M12x1.25 rod thread. Both ways force is equal at 528 N (@0.5 MPa), 739 N (@0.7 MPa), and 950 N (@0.9 MPa); if sizing up or down, neighbouring bores (32 mm or 50 mm) offer different equal-both-ways outputs. Choose a double-rod cylinder when anti-rotation or two-tool drive is required. Mounting options include Basic, FA, LB, and TC. This SKU lacks the -S magnet and cannot take sensors. For stroke lengths of 300 mm or above, verify side-load limits.
Replacement checklist
- ✓ Same ISO 15552 interface → B04-SAID40X100
- ✓ 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-SID40X100 FAQ
Yes, the B04-SID40X100 (construction-machinery dedicated variant of SID40X100) is discontinued. The direct replacement is the SAID40X100, sharing the same ISO 15552 interface, 40 mm bore, 100 mm stroke, and G1/4 port.
It features a G1/4 air port and delivers equal force both ways: 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa. The cushion only decelerates the load; it does not hold position on air loss, so an external rod lock is needed for held loads.
Related AirTAC SAI Cylinders
Request a Quote for the B04-SAID40X100
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAID40X100 replacement — usually within 7-8 hours.