
The AirTAC B02-TCM Welding Dedicated Triple-Axis Cylinder B02-TCM50X50S is a genuine JIS-standard guided cylinder with a Ø50mm bore and 50mm stroke on twin guide rods. Its integrated brass sliding bearing gives high radial-load and impact resistance — about double the horizontal impact tolerance of a plain cylinder, holding the tool square to ±0.05° of rotation without any external linear guide.
The AirTAC B02-TCM50X50S is a JIS twin-rod guided cylinder featuring a brass sliding bearing, engineered specifically for welding-line automation. The leading "B02-" prefix denotes this as a welding-industry dedicated variant of the base TCM50X50S, meaning it is mechanically identical to the standard model but targeted at robotic spot welding and clamping cells. A drive piston runs between two guide rods in a single integrated body, eliminating the need for an external linear rail while delivering 982 N of push at 0.5 MPa. Its brass sliding bearing shrugs off grit, dust, and hard knocks—offering roughly double the horizontal impact resistance of a plain cylinder where a steel-ball guide would jam from contamination.
Precision is maintained under off-centre loads with a tight ±0.05° non-rotating tolerance, keeping fixtures square during dynamic positioning. The unit operates at 30-500 mm/s on 1/4" ports with a Ø20 piston rod. Stroke ends are damped by fixed elastomer pads rather than an adjustable cushion, absorbing shocks without requiring tuning. The standard built-in magnet supports CS1 reed or DS1 electronic switches across four sensor slots, and air can be plumbed from either the upper face or side ports without extra elbows.
| Model | Airtac B02-TCM Welding Dedicated Triple-Axis Cylinder B02-TCM50X50S |
|---|---|
| Series | TCM JIS guided (twin-rod) cylinder |
| Bore size | Ø50 mm |
| Stroke | 50 mm |
| Acting type | Double acting |
| Bearing | Brass sliding bearing |
| Port size | 1/4" |
| 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 |
| Non-rotating tolerance | ±0.05° (retracted) |
| Cushion | Rubber bumper |
| Max std stroke | Up to 250 mm |
Specifications follow the official AirTAC TCL/TCM series datasheet (JIS standard). Confirm against the product label before installation. Thread options: PT (blank) / G / NPT. Every TC model ships with a built-in magnet for sensor switches.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max | 200 kgf | |
Force is set by the bore and piston rod (Ø20 mm); the twin guide rods carry side load and torque, not thrust. Actual usable force is lower than theoretical due to friction and back-pressure.
| TC | Tri-rod (guided, twin-rod) cylinder, double acting. |
|---|---|
| M | Bearing: Brass sliding bearing (M = brass sliding). |
| 50 | Bore size in mm. |
| ×50 | Stroke length in mm. |
| S | Built-in magnet (standard on TC) for a magnetic sensor switch. |
Sister type: TCL50X50 (steel-ball linear bearing, lower friction & higher precision). Thread codes: blank = PT · G · T = NPT.
Handles the 982 N clamping force on a moving weld gun tip. The brass sliding bearing tolerates weld spatter and grit where a linear ball guide would seize, keeping the clamp aligned.
Pushes heavy steel stampings into the weld fixture at 0.5 MPa. The ±0.05° non-rotating accuracy ensures the part seats flat against the locators without twisting under the off-center mass.
Acts as a heavy stop gate on a transfer line ejecting freshly welded assemblies. The integrated twin guide rods absorb the radial side-load of the moving pallets without needing a separate rail.
Selecting this 50 mm bore provides 982 N of thrust at 0.5 MPa (1374 N at 0.7 MPa). If you need less force, stepping down to the Ø40 bore yields about 628 N of push; stepping up to the Ø63 bore provides 1559 N. Choose the sister TCL series with its steel-ball linear bearing instead if your welding fixture demands exceptionally low friction or high vertical load precision. To replace this unit, match the 50 mm bore, 50 mm stroke, 1/4" port size, PT thread form, and the standard S magnet.
Remember that the twin-rod guide resists rotation and torque, not gravity. If air pressure drops or the valve is centered, the rod will drift downward, so fit an external pilot-operated check valve or rod lock for fail-safe load holding during a pneumatic outage.
Quick checklist
At 0.5 MPa, this 50 mm bore double-acting cylinder generates 982 N of push and 825 N of pull. At 0.7 MPa, the push force increases to 1374 N. The maximum theoretical force is 200 kgf.
The B02- prefix designates this as AirTAC's welding-industry dedicated line of the TCM50X50S; mechanically, the seals, ports, and dimensions are identical to the base model. Each end lands on a fixed TPU bumper to soften the stop, but there is no adjustable air cushion screw to set.
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