
The AirTAC Airtac MIC Cushioned Mini Cylinder MIC40X300CM is a genuine double acting + cushion round-body mini air cylinder with a Ø40mm bore and 300mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
Delivering 628.3 N of push force at 0.5 MPa, this double-acting round-body mini cylinder handles heavy-duty linear motion across its 300 mm stroke. The stainless-steel barrel and Ø16 mm piston rod resist mild corrosion and washdown environments, while the CM rear cover provides a specific mounting and port orientation for compact machinery layouts. A 1/4" port supplies the air volume needed for the larger bore.
Twin adjustable air cushions distinguish this unit from standard bumper models, letting you needle-set the deceleration to silence end-of-stroke banging at high cycling speeds. In practical terms, it yields a safe working load of roughly 377 N, or enough to lift about 32 kg vertically with a 2:1 safety margin. Note that this non-magnetic SKU cannot accept position switches; adding the -S magnet variant enables CMSG, DMSG and EMSG sensors.
| Model | Airtac MIC Cushioned Mini Cylinder MIC40X300CM |
|---|---|
| Series | MIC mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 mm |
| Acting type | Double acting + cushion |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| 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 – 800 mm/s |
| Cushion | Variable air cushion, both ends |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MI/MIC (ISO 6432) datasheet. Barrel & rod: stainless steel (round-body, riveted construction). Thread options: PT (blank) / G. Note: the Ø40 bore is a larger, non-ISO-6432 size.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| MIC | round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×300 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
MI-family variants: MI / MIC (double acting ±cushion), MSI / MTI (single acting push / pull), MID / MICD (double rod ±cushion), MIJ / MICJ (adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Pushes heavy cartons across high-speed sorting lines where the needle-set air cushion silently absorbs the 300 mm stroke impact without jarring the belt.
Provides the 628.3 N push force needed to fold thick cardboard packaging, safely lifting loads up to 32 kg before retracting for the next cycle.
Handles robust stainless-steel construction ideal for washdown zones, driving heavy fixtures into place on assembly pallets with controlled deceleration.
When sizing this 40 mm bore, step down to the MIC32 (402.2 N push @0.5 MPa) for lighter loads, as no larger MIC bore exists. The adjustable cushion proves critical when moving heavy masses at high velocities, actively decelerating the piston near stroke end to protect your payload. If your process demands position holding on air loss, remember this cylinder will drift—a pilot-operated check valve or external rod lock is required, as the cushion only slows motion and never acts as a brake. Mount via LB foot, FA flange, SDB pivot, or TC trunnion brackets.
Quick checklist
This 40 mm bore cylinder features a 1/4" port and a male M12x1.25 rod thread. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, increasing to 879.6 N push and 738.9 N pull at 0.7 MPa, with a theoretical maximum force of 128.1 kgf at 1.0 MPa.
No, this specific SKU lacks a magnet and cannot accept CMSG, DMSG, or EMSG switches. You must select the -S magnet variant for position sensing. The adjustable air cushions at both ends only serve to decelerate the load near stroke end; they do not lock or hold the position.
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Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
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