The AirTAC Airtac TCM Guided Cylinders TCM25X80SG is a genuine JIS-standard guided cylinder with a Ø25mm bore and 80mm 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 ±0.08° of rotation without any external linear guide.
TCM25X80SG is a JIS-standard guided twin-rod cylinder with brass sliding guide bearings and G1/8 BSPP parallel ports for the 25 mm bore. The trailing -G swaps the default PT (Rc) tapered thread for G parallel form, which seals on a bonded face washer instead of on the thread flanks - the plumbing style favoured on European and Asian OEM manifolds. Double acting throughout, air extends and retracts the rod, and the built-in magnet (S) is fitted as standard for switch sensing. At 0.5 MPa the centre O12 rod pushes about 245 N (189 N on retract), rising to 344 N at 0.7 MPa; the two guide rods carry side load and torque but generate no thrust themselves. Rotation is held within +/-0.08, so an off-centre blade or tooling plate stays square through the full 80 mm of travel. Air can be fed from either of the two independent port groups (upper face or side) without extra elbows, and precision locating holes let you pull the unit for service and refit it without re-teaching position. Each stroke end lands on a fixed TPU rubber bumper - this series has no adjustable air cushion or cushion screw to set.
| Model | Airtac TCM Guided Cylinders TCM25X80SG |
|---|---|
| Series | TCM JIS guided (twin-rod) cylinder |
| Bore size | Ø25 mm |
| Stroke | 80 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 | ±0.08° (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 | 245 N | 189 N |
| 0.7 MPa | 344 N | — |
| Max | 50 kgf | |
Force is set by the bore and piston rod (Ø12 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). |
| 25 | Bore size in mm. |
| ×80 | Stroke length in mm. |
| S | Built-in magnet (standard on TC) for a magnetic sensor switch. |
Sister type: TCL25X80 (steel-ball linear bearing, lower friction & higher precision). Thread codes: blank = PT · G · T = NPT.
A 245 N push at 0.5 MPa stops and squares cartons on a packaging conveyor, while the brass sliding bearings shrug off sugar dust and spilled product that would foul a ball-bearing guide.
Sawdust and lint never stop the TCM25X80SG's sliding guide, and its +/-0.08 non-rotation keeps an off-centre pusher fence square to the blade through every 80 mm stroke.
Weld spatter and knocks near the fixture are exactly what the impact-tolerant brass bearings are built for; the 245 N class thrust clamps brackets while the guide carries the clamping moment.
Compare both neighbours before committing: O20 gives roughly 157 N of push at 0.5 MPa and O32 about 402 N, so step down if 245 N is generous for your tooling, or up when friction and mass push past about 70% of this bore's output. Pick the TCL series instead when the duty is vertical high-load or demands low-friction precision - its steel-ball linear bearing suits clean, high-accuracy work, whereas the TCM's brass sliding bearings absorb hard knocks (about double the horizontal impact resistance of a plain cylinder) and keep running in grit or coolant that would score a ball guide. Remember the guide resists rotation, not gravity: with the valve centred or air lost, the rod drifts under load, so fit an external rod lock or a pilot-operated check valve where a part must stay put. Ordering a replacement? Match bore 25, stroke 80, G1/8 BSPP port and the standard magnet S. Stroke 80 sits inside this bore's 250 mm standard range, so no made-to-order build applies.
Quick checklist
At 0.5 MPa the 25 mm bore delivers 245 N push and 189 N pull; at 0.7 MPa push rises to 344 N. Theoretical maximum output is 50 kgf. These figures come from the centre piston rod only - the twin guide rods handle side load and torque but add no thrust.
The -G specifies G (BSPP) parallel threads on the 1/8 ports, sealing on a bonded face washer rather than on tapered flanks. It is typically a made-to-order alternative to the standard PT version, so choose it when your existing fittings and manifold follow the BSPP standard - check the mating port style before ordering.
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