This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement B04-SAUD32X75, 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-SUD32X75
The AirTAC B04-SUD Construction Machinery Special Standard Cylinder B04-SUD32X75 is a double-acting profile-type standard cylinder with a Ø32mm bore and 75mm stroke, 1/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the B04-SAUD32X75, which matches its bore, stroke, force and mounting.
- BoreØ32 mm
- Stroke75 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM10×1.25
- StatusDiscontinued → B04-SAUD32X75
- 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-SUD32X75
The AirTAC B04-SUD32X75 is a double-acting, double-rod profile cylinder where a rod exits both ends on a single piston, making the push and pull force equal at 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. The B04- prefix marks this as a construction-machinery dedicated variant of the base SUD32X75, mechanically identical with the same 32 mm bore, 75 mm stroke, 1/8 inch port, and M10x1.25 rod thread. This discontinued model is fully replaced by the direct replacement SAUD32X75, which retains the exact profile body, force, and FA/LB mounting. The SAUD upgrade transitions to current CMSG/DMSG/EMSG sensors and introduces the SAUF built-in-valve variant.
Because both faces use the rod-side area, the double-rod design provides anti-rotation stability and allows the back rod to drive a second tool simultaneously. Note that this specific SKU lacks a magnet (-S) and cannot accept a magnetic switch. A plain cylinder does not hold loads on air loss; the 21 mm adjustable air cushions only decelerate near stroke end, so an external rod lock is required for held loads.
Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD32X75 Technical Specifications
| Model | Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD32X75 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | B04-SAUD32X75 |
| Bore size | Ø32 mm |
| Stroke | 75 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 1000 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The B04-SAUD32X75 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
The B04-SAUD32X75 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-SUD32X75
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 32 | 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-SUD32X75 Is Used
Excavator Linkage
Equal-both-ways push and pull actuates construction machinery covers without single-rod push imbalance.
Heavy Equipment Transfer
The back rod drives a second mechanism simultaneously on construction machinery assembly lines.
Anti-Rotation Gates
Double-rod geometry prevents rotation in compact construction equipment panel flipping fixtures.
Replacing the Airtac B04-SUD Construction Machinery Special Standard Cylinder B04-SUD32X75 with the B04-SAUD32X75
To replace the discontinued B04-SUD32X75, use the SAUD32X75 direct, ensuring the 1/8 inch port and M10x1.25 rod thread align. Size both directions by checking neighbor bores, as the equal-both-ways force remains 345 N @0.5 MPa. Choose a double rod when anti-rotation or dual-tool driving is needed, utilizing FA or LB mounts. Since this SKU has no magnet, the SAUD upgrade requires adding CMSG/DMSG/EMSG sensors. For stroke lengths >=300 mm, verify side-load limits to prevent guide wear. Always use an external rod lock for load holding.
Replacement checklist
- ✓ Same bore / stroke → B04-SAUD32X75
- ✓ 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-SUD32X75 FAQ
Yes, the B04-SUD32X75 is discontinued. The direct replacement is the SAUD32X75. The B04- prefix simply marks it as construction-machinery dedicated; mechanically it is identical to the SUD32X75. The SAUD keeps the same 32 mm bore, 75 mm stroke, and 1/8 inch port.
The 1/8 inch port cylinder delivers equal both ways force of 345 N @0.5 MPa, 483 N @0.7 MPa, and 621 N @0.9 MPa. It lacks a magnet, so no sensors can be fitted to this specific SKU.
Related AirTAC SAU Cylinders
Request a Quote for the B04-SAUD32X75
Send us the quantity and destination. We confirm price, stock and lead time on the B04-SAUD32X75 replacement — usually within 7-8 hours.