This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is B04-SAUD80X700 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the B04-SAUD80X700 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-SUD80X700
The AirTAC Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X700 is a double-acting profile-type standard cylinder with a Ø80mm bore and 700mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the B04-SAUD80X700, which matches its bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke700 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → B04-SAUD80X700
About the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X700
The AirTAC B04-SUD80X700 is a double-acting, double-rod profile cylinder discontinued and directly replaced by the SAUD80X700 drop-in variant. The B04- prefix marks this as AirTAC's construction-machinery dedicated line, mechanically identical to the base SUD80X700 with an 80mm bore, 700mm stroke, 3/8" port, and M20x1.5 rod thread. A rod exits both ends on one piston, meaning both faces use the rod-side area and push/pull force is equal both ways (2268N at 0.5MPa). The extruded aluminum profile barrel is shorter than an ISO 15552 cylinder of the same bore.
Because the rear rod can carry a sensor cam or drive a second tool simultaneously, double-rod designs excel in anti-rotation and multi-tool tasks. For this non-magnetic SKU, legacy CS1-B/DS1-B sensors are not supported, but the SAUD replacement uses current CMSG/DMSG/EMSG sensors. Based on the 2268N force at 0.5MPa, the safe working load is roughly 1361N, allowing a vertical lift of about 116kg with a 2:1 margin. Note that air cushions only decelerate the piston; an external rod lock is required to hold loads on air loss.
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X700 Technical Specifications
| Model | Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X700 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | B04-SAUD80X700 |
| Bore size | Ø80 mm |
| Stroke | 700 mm |
| Acting type | Double acting |
| Port size | 3/8" |
| 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, 28 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The B04-SAUD80X700 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The B04-SAUD80X700 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-SUD80X700
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×700 | 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-SUD80X700 Is Used
Excavator Linkage Actuation
Drives synchronized dual-tool mechanisms on heavy equipment where equal push and pull force is required to handle structural loads safely.
Heavy Machinery Transfer
Moves large construction components using the rear rod as a sensor cam to track position while the front rod performs the primary work.
Anti-Rotation Guide Arms
Powers positioning arms on construction machinery frames, relying on the double-rod design to prevent piston rotation during extension and retraction.
Replacing the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD80X700 with the B04-SAUD80X700
To replace the discontinued B04-SUD80X700, use the drop-in SAUD80X700, which matches the 80mm bore, 700mm stroke, 3175N force at 0.7MPa, 3/8" port, and FA/LB mounting. Size both ways by checking neighbor bores (63mm or 100mm) to ensure the equal-both-ways force fits your application. Choose a double-rod cylinder when you need anti-rotation, dual-tool driving, or equal push/pull force. If upgrading to the SAUD, note the sensor change from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG sensors. With a 700mm stroke, external guides are recommended to prevent rod bending and manage side loads.
Replacement checklist
- ✓ Same bore / stroke → B04-SAUD80X700
- ✓ 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-SUD80X700 FAQ
Yes, the B04-SUD80X700 is discontinued. The exact drop-in replacement is the SAUD80X700. The B04- prefix simply marks this as AirTAC's construction-machinery dedicated variant of the SUD80X700, so the SAUD80X700 matches it exactly on bore, stroke, force, port, and FA/LB mounting.
The 80mm bore features a 3/8" port and generates equal force both ways: 2268N at 0.5MPa, 3175N at 0.7MPa, and 4082N at 0.9MPa. It uses an M20x1.5 rod thread and has a 28mm adjustable air cushion at each end. The safe working load is approximately 1361N, yielding a vertical lift capacity of about 116kg with a 2:1 margin.
Related AirTAC SAU Cylinders
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