This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAUD40X200 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAUD40X200 in place of this model. 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-SUD40X200
The AirTAC Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD40X200 is a double-acting profile-type standard cylinder with a Ø40mm bore and 200mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAUD40X200, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke200 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → B04-SAUD40X200
About the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD40X200
The AirTAC B04-SUD40X200 is a discontinued double-acting double-rod profile cylinder where the B04- prefix marks it as the construction-machinery dedicated variant of the SUD40X200, mechanically identical to the base model. A rod exits both ends of the extruded aluminium barrel on a single piston, meaning push and pull force are equal at 528 N @0.5 MPa, 739 N @0.7 MPa, and 950 N @0.9 MPa. The bore is 40 mm, the rod is Ø16 mm, and the port is 1/4". Because it is discontinued, the exact drop-in replacement is the SAUD40X200, which retains the same body, bore, stroke, force, port, and FA/LB mounting.
This design provides equal both-ways force and allows the back rod to drive a second tool or actuate a remote cam, while the compact profile barrel is shorter than an ISO 15552 cylinder of the same bore. For sizing, the 528 N @0.5 MPa force yields a safe working load of about 317 N (60% of rated force) and a vertical lift capacity of roughly 27 kg with a 2:1 margin. Note this SKU has no magnet (-S), so it cannot take a magnetic switch; the SAUD upgrade uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B. A plain cylinder does not hold loads on air loss—the 21 mm adjustable cushions only decelerate near stroke end, so use an external rod lock for held loads.
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD40X200 Technical Specifications
| Model | Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD40X200 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | B04-SAUD40X200 |
| Bore size | Ø40 mm |
| Stroke | 200 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| 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, 21 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The B04-SAUD40X200 carries the same 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-SAUD40X200 produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD40X200
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×200 | 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-SUD40X200 Is Used
Excavator Panel Pusher
Uses the equal both-ways force on the 40 mm bore to extend and retract a cab access panel on heavy equipment, with the back rod driving a secondary latch.
Crane Gripper Actuator
Employs the double-rod anti-rotation stability to keep a material gripper aligned on a construction crane, preventing twist during the 200 mm travel.
Loader Arm Stopper
Cycles a mechanical stop on a loader arm where the compact profile barrel fits tight chassis clearances and the 1/4" port delivers rapid 30-800 mm/s response.
Replacing the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD40X200 with the B04-SAUD40X200
To replace the discontinued B04-SUD40X200, order the SAUD40X200, which is a drop-in swap keeping the 40 mm bore, 200 mm stroke, 1/4" port, and FA/LB mounting. When sizing both ways, verify the equal push/pull force of 528 N @0.5 MPa fits your load, or step to neighbouring bores (32 mm or 50 mm) to adjust the 345 N or 825 N @0.5 MPa capacity. A double rod is right when you need anti-rotation stability or want to drive two tools from one cylinder. Because this SKU lacks a magnet (-S), it cannot take sensors; upgrading to the SAUD lets you use CMSG/DMSG/EMSG switches instead of the old CS1-B/DS1-B. For this 200 mm stroke (under 300 mm), side-load stress is moderate, but always ensure the FA/LB mount aligns with the SC-series footprint. Never rely on the air cushion to hold a load on air loss—it only decelerates—so fit an external rod lock or pilot-operated check valve for vertical holding.
Replacement checklist
- ✓ Same bore / stroke → B04-SAUD40X200
- ✓ 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-SUD40X200 FAQ
Yes, the B04-SUD40X200 is discontinued. The B04- prefix marks it as the construction-machinery dedicated variant of the SUD40X200, mechanically identical to the base model. The exact drop-in replacement is the SAUD40X200, which matches the 40 mm bore, 200 mm stroke, 528 N force, 1/4" port, and FA/LB mounting.
The double-rod design means force is equal both ways: 528 N @0.5 MPa, 739 N @0.7 MPa, and 950 N @0.9 MPa. The air port is 1/4". The piston rod is Ø16 mm with an M12x1.25 thread, and it has a 21 mm adjustable cushion at each end. This SKU has no magnet, so it cannot take a magnetic switch.
Related AirTAC SAU Cylinders
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