Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ40X70B
The AirTAC Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ40X70B 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-ACQ40X70B
The B02-ACQ40X70B is a double-acting JIS compact air cylinder 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 base ACQ40X70B; it is mechanically identical to the standard model, sharing the exact same dimensions, NBR fixed bumpers, and PT1/8 porting, making it ideal for tight welding-cell fixturing.
This specific unit features a 70 mm stroke and a male-threaded M14x1.5 piston rod end that couples directly to your tooling. The short C-clip and riveted body design drastically reduces axial footprint compared to round-body cylinders, while the hard-anodized 40 mm bore ensures durability. Because it lacks the -S magnet option, it ships without a sensor piston, though the body retains standard magnetic-switch grooves for future upgrades.
Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ40X70B Technical Specifications
| Model | Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ40X70B |
|---|---|
| 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-ACQ40X70B
| 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-ACQ40X70B Is Used
Spot Welding Gun Actuation
Drives the lower arm of a robotic spot welding gun with 628.3 N of extend force, utilizing the 70 mm stroke to position the copper tips accurately around automotive sheet metal panels.
Weld Fixture Clamping
Secures tubular frame components in a dedicated welding jig; the compact C-clip body minimizes axial intrusion so clamps can fit between tight structural nodes without interfering with the torch path.
Assembly Line Part Ejection
Pushes completed welded sub-assemblies out of the cell onto a downstream conveyor, using the male M14x1.5 rod thread to attach a customized nylon contact pad that prevents marring finished surfaces.
Is the Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ40X70B the Right Cylinder?
When sizing this 40 mm bore cylinder, stepping down to a 32 mm bore yields 402.1 N push at 0.5 MPa, whereas stepping up to a 50 mm bore provides 981.8 N. This 40 mm model strikes a middle ground for medium-duty clamping. Note that a plain ACQ-type cylinder does not hold its load if air pressure is lost or the valve is centered; the rod will drift, and the fixed NBR bumper only decelerates the piston near the stroke end. For fail-safe holding in a robotic weld cell, an external rod lock or pilot-operated check valve is required. To order, confirm the 40 mm bore, 70 mm stroke, PT1/8 port, male M14x1.5 rod thread, and no 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-ACQ40X70B 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 increases to 879.6 N. The maximum push force is 128 kgf at 1.0 MPa. It operates between 0.15-1.0 MPa, handles speeds of 30-500 mm/s, and functions in temperatures from -20 to +70 C.
The B02- prefix designates this as a welding-industry dedicated cylinder, though it is mechanically identical to the standard ACQ40X70B with no special seals or coatings. It uses fixed NBR elastomer bumpers at both ends rather than an adjustable air cushion. For high-speed welding automation, you should slow the approach speed or add an external shock absorber to manage end-stop energy.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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