Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ40X70
The AirTAC Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ40X70 is a genuine double-acting COMPACT (thin) air cylinder built to JIS dimensions, with a Ø40mm bore and 70mm 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
- Stroke70 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-ACQ40X70
The B02-ACQ40X70 is a double-acting JIS compact air cylinder built for welding-line automation, delivering 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. The leading "B02-" prefix marks this as AirTAC's welding-industry dedicated variant of the standard ACQ40X70. Mechanically, it shares the exact same physical specifications, meaning you get the standard 40mm bore, 70mm stroke, and PT1/8 porting without any unlisted modifications.
This thin profile relies on a C-clip and riveted piston-to-rod assembly to minimize axial mounting depth. Instead of an adjustable air cushion, the ends feature a fixed NBR elastomer bumper to absorb the stroke impact. The body includes magnetic-switch grooves, though this specific SKU ships without the internal magnet. The 16mm piston rod terminates in a female M8x1.25 thread for direct load coupling.
Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ40X70 Technical Specifications
| Model | Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ40X70 |
|---|---|
| Series | ACQ JIS compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 70 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-ACQ40X70
| ACQ | JIS compact (thin) double-acting cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×70 | 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-ACQ40X70 Is Used
Spot Welding Gun Actuation
Drives the moving electrode arm in robotic spot welding guns where the 628.3 N push force securely clamps sheet metal panels prior to the weld current firing.
Welding Fixture Clamping
Holds structural steel tubes in place within a welding jig, utilizing the 70mm stroke to clear the part for robotic torch access before retracting.
Assembly Line Part Ejection
Pushes completed welded sub-assemblies off a transfer conveyor, relying on the fixed NBR bumper to quietly absorb the end-of-stroke impact at high cyclic rates.
Is the Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ40X70 the Right Cylinder?
When sizing your fixture, compare this 40mm bore (628.3 N push @0.5 MPa) against the adjacent options. Stepping down to a 32mm bore yields 402.1 N of push, while stepping up to a 50mm bore provides 981.8 N. If your welding cell experiences intermittent air loss or valve centering, note that a plain compact cylinder drifts and cannot hold a load; an external rod lock or pilot-operated check valve is required for fail-safe positioning. To order, confirm the 40mm bore, 70mm stroke, PT1/8 port, female rod thread, and no sensor magnet.
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-ACQ40X70 FAQ
At 0.5 MPa, the push force is 628.3 N and the pull force is 527.8 N. At 0.7 MPa, the push force reaches 879.6 N. The maximum push force is 128 kgf at 1.0 MPa. Operating pressure ranges from 0.15-1.0 MPa, with a speed of 30-500 mm/s.
The B02- prefix simply designates this as a welding-industry dedicated variant of the ACQ40X70; the physical specs, seals, and dimensions remain identical to the base model. It does not have adjustable air cushions, using a fixed NBR elastomer bumper at each end to decelerate the piston.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ40X70
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.