Airtac TMIC Guided Cylinder with Guide Unit TMICM20X250S
The AirTAC Airtac TMIC Guided Cylinder with Guide Unit TMICM20X250S is a genuine guide-frame (guided) pneumatic cylinder — a Ø20mm double-acting MI mini cylinder built into a twin-rod guide unit running on brass bearings. The guide frame absorbs side load and torque so the 250mm stroke stays true, giving you a ready-to-mount linear slide without a separate guide.
- BoreØ20 mm
- Stroke250 mm
- Port size1/8"
- BearingBrass bearing
- Acting typeDouble acting
- CushionVariable air cushion, both ends
About the Airtac TMIC Guided Cylinder with Guide Unit TMICM20X250S
Built around a twin-rod aluminium guide frame on brass bearings, the AirTAC TMICM20X250S is a double-acting linear slide ready to mount. A needle-set variable air cushion at both ends soaks up high-speed shock, keeping motion square and quiet even at the maximum 250 mm standard stroke. The brass bearing gives high torsional stiffness, making this the right pick when the load twists or pushes sideways.
At 0.5 MPa this 20 mm bore generates 157 N of push and 131.9 N of pull thrust. That translates to a safe working thrust of about 94 N, or roughly 8 kg of vertical push with a 2:1 margin, load curve permitting. The 1/8" port feeds the chamber efficiently. Remember the guide frame's allowable load drops as the offset grows, so always confirm the exact capacity from the load curve rather than relying on thrust alone.
Airtac TMIC Guided Cylinder with Guide Unit TMICM20X250S Technical Specifications
| Model | Airtac TMIC Guided Cylinder with Guide Unit TMICM20X250S |
|---|---|
| Series | TMIC guide-frame cylinder |
| Bore size | Ø20 mm |
| Stroke | 250 mm |
| Bearing type | Brass bearing (high torsional stiffness) |
| Guide | Twin-rod guide frame, double-rod unit |
| Port size | 1/8" |
| Acting type | Double acting |
|---|---|
| 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 | Variable air cushion, both ends |
| Max standard stroke | Up to 250 mm |
Specifications follow the official AirTAC TMI/TMIC datasheet. Guide frame & fixed plate: aluminum alloy; matching cylinder: MI/MIC round-body mini cylinder. Allowable load depends on the load-offset distance — consult the TMI/TMIC maximum-load curves before final selection. Thread options: PT (blank) / G.
Theoretical Output Force (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 kgf | |
Thrust equals the underlying MI cylinder. The usable load a guide frame can carry is limited by the load-offset curve, not by thrust alone — always check both. Actual force is lower than theoretical due to friction and back-pressure.
Model Code: Airtac TMIC Guided Cylinder with Guide Unit TMICM20X250S
| TMIC | Guide-frame cylinder with variable air cushion. |
|---|---|
| M | Brass bearing — high torsional stiffness, best for radial-load resistance. |
| 20 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
TMI/TMIC family: TMI (bumper) / TMIC (cushion), bearing M (brass) / L (linear). Order the guide frame separately as F-TMICM20X250 when needed.
Where the Airtac TMIC Guided Cylinder with Guide Unit TMICM20X250S Is Used
High-Speed Transfer Pusher
Uses the 157 N push force to deflect parts on a moving belt. The variable air cushion absorbs the end-of-stroke shock, while the brass bearings resist the side torque from uneven packages.
Long-Stroke Carton Flap Folder
Leveraging the full 250 mm stroke, it folds heavy flaps squarely. The twin-rod frame prevents twist, and the needle-set cushion ensures quiet deceleration at high cycling speeds.
Vertical Pallet Lift Stop
Halts pallets laterally with high torsional stiffness. The brass bearings handle the radial impact, and the -S magnet triggers a DMSG switch to confirm the stop position.
Is the Airtac TMIC Guided Cylinder with Guide Unit TMICM20X250S the Right Cylinder?
When sizing, compare this 157 N @0.5 MPa push force against the adjacent bores: step down to the 16 mm bore (100.5 N push) for lighter duties, or step up to the 25 mm bore (245.3 N push) if you need more muscle. Choose these brass bearings over the linear-bearing TMICL variant when your application involves high torsional loads or side thrust rather than ultra-low friction. The variable air cushion is essential for high-speed or heavy moving masses, as it decelerates the stroke smoothly.
Because this is a 250 mm stroke, verify your load-offset distance against the maximum-load curves to prevent rod deflection. This -S model includes a piston magnet for CMSG, DMSG, or EMSG switches; a non-S SKU cannot take a sensor. Note that the cushion only decelerates near the end of stroke—it is not a lock—so fit an external rod lock or pilot check valve if you must hold position on air loss.
Quick checklist
- ✓ Required thrust at your working pressure
- ✓ Load and offset within the load curve
- ✓ Bearing: brass (torque) vs linear (precision)
- ✓ Stroke and mounting space
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Keep the load within the load-offset curve.
- check Mount on a flat, rigid surface using the fixed plate.
- check Do not exceed the rated speed (30-500 mm/s).
- check Installation by qualified personnel per AirTAC docs.
Airtac TMIC Guided Cylinder with Guide Unit TMICM20X250S FAQ
At 0.5 MPa it pushes 157 N and pulls 131.9 N; at 0.7 MPa it pushes 219.8 N and pulls 184.7 N, with a theoretical max of 32 kgf at 1.0 MPa. However, thrust is not the load limit—the allowable load depends entirely on your load-offset distance and must be read from the TMI/TMIC maximum-load curves.
The brass bearings provide high torsional stiffness to handle side loads, while the needle-set variable air cushion at both ends decelerates the piston near stroke end to absorb high-speed shock. The cushion is not a lock or brake; on air loss the piston will drift. For position holding, use an external rod lock or pilot check valve. This -S model supports CMSG, DMSG, and EMSG sensors.
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