
The AirTAC Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ50X100S is a genuine double-acting COMPACT (thin) air cylinder built to JIS dimensions, with a Ø50mm bore and 100mm stroke, PT1/4 air ports and a C-clip / riveted short body that saves mounting depth. Magnetic-switch slots around the body accept position sensors.
The AirTAC B02-ACQ50X100S is a double-acting, single-rod JIS compact cylinder engineered for welding-line automation. The B02- prefix designates this as a welding-industry dedicated variant of the base ACQ50X100S, meaning it shares the exact same physical specs while being targeted at robot and spot welding cells. It delivers a robust 981.8 N push force at 0.5 MPa (1374.4 N at 0.7 MPa) across its 100 mm stroke.
This model features a short C-clip and riveted body construction that drastically reduces axial footprint compared to round-body alternatives. The bore is hard-anodized for longevity, and the piston incorporates an integrated magnet (-S) for direct mounting of AirTAC reed or electronic solid-state switches along the body grooves. End-stopping relies on a fixed NBR elastomer bumper, which absorbs impact energy without requiring field adjustment.
| Model | Airtac B02-ACQ Ultra-Thin Welding Special Cylinder B02-ACQ50X100S |
|---|---|
| Series | ACQ JIS compact (thin) cylinder |
| Bore size | Ø50 mm |
| Stroke | 100 mm |
| Acting type | Double acting |
| Port size | PT1/4 |
| Rod end thread | M10×1.5 female / M18×1.5 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 | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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. |
|---|---|
| 50 | Bore size in mm. |
| ×100 | 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 heavy steel assemblies within a robotic spot-welding cell, utilizing the 981.8 N push force to hold parts firmly against locators while the welding guns operate.
Advances and retracts locating pins on a welding fixture over its 100 mm stroke, where the compact C-clip body saves critical axial space inside dense tooling layouts.
Pushes completed welded frames out of the fixture using the 824.6 N retract pull force, clearing the station quickly for the next cycle in automated production lines.
When sizing this 50 mm bore actuator, consider stepping down to the 40 mm version if your load requires less force (628.3 N push at 0.5 MPa), or moving up to the 63 mm bore if you need greater thrust (1558.6 N push at 0.5 MPa). This cylinder uses a PT1/4 port and a female M10x1.5 rod-end thread to couple with your load; ensure side loading is minimized on the 20 mm rod to prevent premature wear.
Keep in mind that a standard ACQ body does not hold its position if air pressure is lost or the valve is centered, as the piston will drift. For welding fixtures that must safely maintain a clamp under pressure loss, an external rod lock or pilot-operated check valve is required. The fixed NBR bumper only decelerates the piston near the end of travel and does not act as a braking device.
Quick checklist
This 50 mm bore cylinder provides a push (extend) force of 981.8 N and a pull (retract) force of 824.6 N at 0.5 MPa. At 0.7 MPa, the push force increases to 1374.4 N. The maximum push force is 200 kgf at the 1.0 MPa operating pressure limit.
The B02- prefix indicates this is a welding-industry dedicated variant of the standard ACQ50X100S, mechanically identical to the base model. It uses fixed NBR elastomer bumpers at both ends to absorb end-stop impact rather than adjustable air cushions, so for high-energy welding automation cycles, you may need to slow the approach or add external shock absorbers.
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