
The AirTAC Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ32X40SB is a genuine double-acting COMPACT (thin) air cylinder built to JIS dimensions, with a Ø32mm bore and 40mm stroke, PT1/8 air ports and a C-clip / riveted short body that saves mounting depth. Magnetic-switch slots around the body accept position sensors.
The B02-ACQ32X40SB is a double-acting JIS compact air cylinder built for welding-line automation. The leading B02- prefix marks this as AirTAC's welding-industry dedicated variant of the base ACQ32X40SB; mechanically it is identical, delivering 402.1 N of push force and 301.6 N of pull force at 0.5 MPa. Its short C-clip and riveted body design drastically reduces axial footprint compared to round-body alternatives, fitting neatly into tight robotic fixturing.
This specific configuration includes an S option for a built-in piston magnet, enabling position sensing via AirTAC reed or electronic switches along the body grooves. The B option provides a male M14x1.5 threaded piston rod end (on a 16 mm rod) for direct load coupling. Instead of an adjustable air cushion, it relies on fixed NBR elastomer bumpers at both ends to absorb end-stop impact within its 30-500 mm/s operating speed range.
| Model | Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ32X40SB |
|---|---|
| Series | ACQ JIS compact (thin) cylinder |
| Bore size | Ø32 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 male (B) |
| 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 – 500 mm/s |
| Cushion | Bumper (both ends) |
| Max standard stroke | Up to 100 mm |
Specifications follow the official AirTAC ACQ JIS compact-cylinder datasheet. Confirm against the product label before installation. Port thread: PT (standard); G and NPT available. Rod: female thread (blank) / male thread (B).
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 302 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| ACQ | JIS compact (thin) double-acting cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×40 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| B | Male-thread piston rod (omit = female-thread rod). |
Thread: PT standard (G / NPT available). Related ACQ-family variants: ASQ (single-acting push), ATQ (single-acting pull), ACQD (double rod), ACQJ (adjustable stroke), TACQ (guided / non-rotating).
Secures mild steel brackets in a robotic MIG welding cell, using the 402.1 N extend force to hold parts firmly against locators while the short body minimizes interference with the welding torch.
Drives the moving arm of a resistance spot welding gun fixture, where the male M14x1.5 rod end couples directly to the gun mechanism and the magnetic sensor tracks electrode position.
Pushes finished welded sub-assemblies out of a tight fixture onto a downstream conveyor, relying on the compact C-clip body to fit within the narrow machine envelope.
When sizing this 32 mm bore actuator, consider stepping down to a 25 mm bore for 245.4 N push at 0.5 MPa if the clamping load is lighter, or moving up to a 40 mm bore for 628.3 N push if higher force is required. Keep in mind that a standard ACQ body does not hold its position if air pressure drops or the valve is centered; the rod will drift. For fail-safe load holding in a vertical welding clamp, an external rod lock or pilot-operated check valve is necessary.
To order, confirm the essentials: 32 mm bore, 40 mm stroke, PT1/8 port, built-in magnet (S), and male M14x1.5 rod thread (B). The fixed NBR bumper is not field-adjustable, so for high-energy welding movements, add an external shock absorber or slow the approach speed.
Quick checklist
At 0.5 MPa, the push force is 402.1 N and the pull force is 301.6 N. At 0.7 MPa, the push force is 562.9 N. The maximum push force is 82 kgf at 1.0 MPa. It operates between 0.15-1.0 MPa, with a speed range of 30-500 mm/s.
The B02- prefix simply designates this as a welding-industry dedicated variant of the ACQ32X40SB; it shares the exact same physical specs, seals, and dimensions as the base model. It does not have adjustable air cushions; it uses fixed NBR elastomer bumpers at both stroke ends to absorb impact.
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