This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement B04-SAUD100X75, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAU replacement uses the same profile body, bore, stroke, force and SC-series mounting. It moves to the current CMSG / DMSG / EMSG sensor switches (the SU used CS1-B / DS1-B) and adds the SAUF valve-integrated option.
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X75
The AirTAC Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X75 is a double-acting profile-type standard cylinder with a Ø100mm bore and 75mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAUD100X75, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke75 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAUD100X75
- 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-SUD Construction Machinery Special Standard Cylinder B04-SUD100X75
The B04-SUD100X75 is an AirTAC construction-machinery dedicated double-acting double-rod profile cylinder. The B04- prefix marks it as a heavy-equipment variant of the base SUD100X75, mechanically identical with a 100mm bore, 75mm stroke, and 1/2" port. Because a rod exits both ends on one piston, push and pull forces are equal both ways at 3681N @0.5MPa, 5153N @0.7MPa, and 6626N @0.9MPa. This SUD model is discontinued; the direct replacement is the SAUD100X75, retaining the same force, port, and FA/LB mounting.
The dual-rod design prevents piston rotation and lets the back rod drive a second tool simultaneously. Note this non-magnetic SKU cannot take a sensor. A plain cylinder drifts on air loss, as the 29mm adjustable cushion only decelerates near stroke end, so use an external rod lock for held loads.
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X75 Technical Specifications
| Model | Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X75 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | B04-SAUD100X75 |
| Bore size | Ø100 mm |
| Stroke | 75 mm |
| Acting type | Double acting |
| Port size | 1/2" |
| Rod thread | M20×1.5 |
| 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, 29 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The B04-SAUD100X75 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The B04-SAUD100X75 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X75
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×75 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SU-family variants: SUD (double rod), SUJ (adjustable stroke) — each maps to its SAU equivalent (SUD→SAUD, SUJ→SAUJ). The current SAU line adds the SAUF valve-integrated option.
Where the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X75 Is Used
Excavator Linkage
Equal-both-ways force actuates heavy-equipment control linkages where stable push and pull strokes are required without rotation.
Crusher Feed Gate
Dual rods drive the feed gate on construction-machinery crushers, providing synchronized force from both ends to clear debris.
Loader Arm Stop
The back rod mounts a mechanical stop while the front rod shifts the loader arm, using the compact profile to save space.
Replacing the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X75 with the B04-SAUD100X75
To replace the discontinued B04-SUD100X75, use the SAUD100X75 direct, which matches the 100mm bore, 75mm stroke, 1/2" port, and FA/LB mounting. If sizing both ways, compare neighbouring bores to ensure the equal-both-ways force fits your load. Choose a double-rod cylinder when you need anti-rotation or to drive two tools. Because this SKU lacks a magnet, it cannot take a sensor; the SAUD uses current CMSG/DMSG/EMSG sensors. For strokes >=300mm, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same bore / stroke → B04-SAUD100X75
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S): sensor family CS1-B → CMSG
- ✓ Mounting reused (FA/FB/CA/CB/LB)
- ✓ Need a built-in valve? → SAUF
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD100X75 FAQ
Yes, this SUD cylinder is discontinued. The direct replacement is the SAUD100X75. The B04- prefix simply marks it as the construction-machinery dedicated variant of the SUD100X75. The SAUD keeps the same 100mm bore, 75mm stroke, 1/2" port, and equal force both ways.
Force is equal both ways: 3681N @0.5MPa, 5153N @0.7MPa, and 6626N @0.9MPa. The bore dictates a 1/2" port.
Related AirTAC SAU Cylinders
Request a Quote for the B04-SAUD100X75
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAUD100X75 replacement — usually within 7-8 hours.