The AirTAC Airtac TCM Guided Cylinders TCM32X125SG is a genuine JIS-standard guided cylinder with a Ø32mm bore and 125mm 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 ±0.06° of rotation without any external linear guide.
The TCM32X125SG is a JIS-guided twin-rod cylinder, double-acting, with the drive piston running between two guide rods carried in a brass sliding bearing inside one integrated body. That guide unit does the job of a separate rail-plus-slide, so you skip sourcing a linear guide and the alignment work of matching one to a bare cylinder. At 32 mm bore it generates about 402 N of push (0.5 MPa) - 563 N at 0.7 MPa - while holding rotation to within +/-0.06, enough to keep a plate or blade square under a genuinely off-centre load. The 125 mm stroke covers mid-length travel where a short-stroke slide runs out of reach.
Configuration: the S in the code confirms the built-in magnet (standard fitment on every TC), and G sets the 1/8" ports to BSPP thread form. Air can be plumbed from either of two independent port groups - the upper face or the side - so you feed from whichever face is clear without elbows. A 16 mm piston rod delivers the thrust while the guide rods take the moment load. Being a sliding-bearing design, this cylinder shrugs off weld spatter, swarf and coolant that would eventually jam a ball-retained guide; expect 30-500 mm/s across a 0.15-1.0 MPa supply.
| Model | Airtac TCM Guided Cylinders TCM32X125SG |
|---|---|
| Series | TCM JIS guided (twin-rod) cylinder |
| Bore size | Ø32 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Bearing | Brass sliding bearing |
| Port size | 1/8" |
| 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 | ±0.06° (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 | 402 N | 302 N |
| 0.7 MPa | 563 N | — |
| Max | 82 kgf | |
Force is set by the bore and piston rod (Ø16 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). |
| 32 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| S | Built-in magnet (standard on TC) for a magnetic sensor switch. |
Sister type: TCL32X125 (steel-ball linear bearing, lower friction & higher precision). Thread codes: blank = PT · G · T = NPT.
Clamping steel brackets ahead of a robot weld gun puts the cylinder right in the spatter and spark zone - exactly where a ball-retained guide eventually binds. The brass sliding bearing tolerates the grit, and 402 N of push at 0.5 MPa seats the bracket firmly while +/-0.06 anti-rotation keeps the clamp jaw square to the seam.
Gating timber pallets on a dusty sawmill transfer line means stopping a moving load with constant radial thrust and airborne grit. The twin guide rods absorb the moment load, the sliding bearing keeps running where a precision ball guide would jam, and 402 N at 0.5 MPa holds a loaded pallet at the station.
Pressing a bearing into a housing with a grip point offset from the cylinder axis is where the +/-0.06 non-rotating tolerance earns its keep - the pressed part stays square through the 125 mm stroke. The 563 N available at 0.7 MPa covers light staking, and the integrated guide removes any need to align a separate slide rail.
Sizing context: dropping to 25 yields roughly 245 N at 0.5 MPa, stepping up to 40 gives about 628 N - so this 32 mm bore sits squarely in the mid-force band. Choose the TCL variant instead if your duty is vertical high-load lifting or needs minimal breakaway friction, since TCL's steel-ball linear bearing is the low-friction precision option; the TCM is the one that survives dust, knocks and side thrust. Remember that with the valve centred or air lost, the rod will drift - the guide fights rotation, not gravity - so add a rod lock or pilot-operated check valve where a load must stay put. Replacing an existing unit? Match bore 32, stroke 125, the 1/8" BSPP port form and the standard magnet S. Stroke 125 is within the 250 mm standard range for this bore, so no made-to-order surcharge applies.
Quick checklist
At 0.5 MPa this 32 mm bore delivers 402 N on extension and 302 N on retraction. Raise supply to 0.7 MPa and push rises to 563 N. Theoretical peak force is 82 kgf. Only the centre 16 mm piston rod generates these figures; the two guide rods carry side load and torque instead. Operating band is 0.15-1.0 MPa, proof pressure 1.5 MPa, and cycle speed 30-500 mm/s.
No. Each end of the stroke lands on a fixed TPU rubber bumper that softens the stop - there is no air cushion and no cushion screw to set on the TC series. If end-of-stroke deceleration must be tuned, do it with flow controls on the 1/8" G ports. Position feedback is simple by contrast: the standard-built magnet is read by an AirTAC CS1 (reed) or DS1 (electronic) switch clipped into any of the four body slots.
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