Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ40X50B
The AirTAC Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ40X50B is a genuine double-acting COMPACT (thin) air cylinder built to JIS dimensions, with a Ø40mm bore and 50mm 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.
- BoreØ40 mm
- Stroke50 mm
- Port sizePT1/8
- Acting typeDouble acting
- Rod threadM8×1.25 (F) / M14×1.5 (B)
- ConfigurationStandard compact
- 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 B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ40X50B
The AirTAC B02-ACQ40X50B is a double-acting, single-rod JIS compact cylinder engineered for welding-line automation. The leading B02- prefix designates this as a welding-industry dedicated variant of the base ACQ40X50B, meaning it is mechanically identical to the standard model but targeted at fixturing and clamping in robot welding cells. It provides a robust 628.3 N push force and 527.8 N pull force at 0.5 MPa, utilizing a 16 mm piston rod and a PT1/8 port.
Because this is a -B configuration, the rod end features a male M14x1.5 thread for direct load coupling. The short C-clip and riveted body design drastically reduces axial footprint compared to round-body alternatives. Stopping is handled by fixed NBR elastomer bumpers at both ends rather than adjustable air cushions, so external shock absorbers should be added for high-energy welding fixture approaches.
Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ40X50B Technical Specifications
| Model | Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ40X50B |
|---|---|
| Series | ACQ JIS compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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).
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 | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ40X50B
| ACQ | JIS compact (thin) double-acting cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×50 | 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).
Where the Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ40X50B Is Used
Robot Welding Cell Clamping
Secures mild steel brackets in a robotic GMAW cell, using the 628.3 N extend force to hold parts firmly against the fixture locators while the male M14x1.5 rod threads directly into the clamp arm.
Spot Weld Gun Actuation
Drives the moving electrode of a lightweight spot weld gun, where the 50 mm stroke provides adequate travel to clear the workpiece and the compact body minimizes interference in tight robotic wrists.
Weldment Ejection Station
Pushes completed tubular frames out of an automated welding line fixture, relying on the 527.8 N retract force to cycle quickly at up to 500 mm/s without exceeding the 100 mm standard stroke limit.
Is the Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ40X50B the Right Cylinder?
When sizing this 40 mm bore actuator, consider stepping down to the 32 mm bore for lighter clamping (402.1 N push @0.5 MPa) or up to the 50 mm bore for heavier weldment holding (981.8 N push @0.5 MPa). This specific SKU includes the male M14x1.5 rod thread and lacks a sensor magnet, though the body retains magnetic-switch grooves for future retrofits.
Keep in mind that a standard compact cylinder like this does not hold its position if air pressure is lost or the valve is centered; the rod will drift. For fail-safe load holding on a vertical welding fixture, an external rod lock or pilot-operated check valve is required. Operating speed ranges from 30-500 mm/s.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Short-body depth vs. a round-body cylinder
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (S) for sensors?
- ✓ Female (blank) or male (B) rod thread
- ✓ Side load — avoid on a compact rod
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the short piston rod.
- check Very long strokes are unsuitable for the compact body.
- check Handle the C-clip carefully; seat it fully in its groove.
- check Installation by qualified personnel per AirTAC docs.
Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ40X50B FAQ
At 0.5 MPa, this 40 mm bore cylinder provides 628.3 N of push (extend) force and 527.8 N of pull (retract) force. At 0.7 MPa, the push force increases to 879.6 N. The maximum push force is 128 kgf at 1.0 MPa. It operates on filtered air between 0.15-1.0 MPa, with a proof pressure of 1.5 MPa, and supports a speed range of 30-500 mm/s.
The B02- prefix simply indicates this is AirTAC's welding-industry dedicated variant of the ACQ40X50B; it shares the exact same physical specifications, seals, and dimensions as the base model. It does not have adjustable air cushions; instead, it uses fixed NBR elastomer bumpers at both stroke ends to absorb impact. For high-speed welding automation, you should slow the approach or add external shock absorbers.
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