
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI20X450R is a genuine double acting round-body mini air cylinder with a Ø20mm bore and 450mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments. Its ISO 6432 mounting interface makes it a compact drop-in for standard mini-cylinder fixtures.
Delivering 157 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles a 450 mm stroke with a 1/8 inch air port. The Ø20 mm bore conforms to ISO 6432 mounting dimensions, so it drops directly into standard mini-cylinder brackets and clevises for straightforward machine integration. Its stainless barrel and rod resist mild corrosion, offering a real advantage over painted steel in damp or washdown environments.
Because this SKU lacks the -S magnet option, it cannot accept CMSG, DMSG or EMSG position switches. Fixed TPU bumper pads absorb impact at the stroke ends, though they decelerate rather than act as an adjustable air cushion. For practical sizing, plan for about 94 N of real work at 0.5 MPa, which means it lifts roughly 8 kg vertically with a 2:1 safety margin.
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI20X450R |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 450 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 | Fixed TPU bumper pads |
| 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.
| 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 | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×450 | 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 lightweight cardboard cartons on a packaging line using 157 N of thrust, where the stainless build withstands occasional washdowns.
Extends 450 mm to position a fabric edge guide roller, relying on the axial-in R rear port to keep airlines clear of moving web material.
Cycles rapidly to push plastic injection moulded components out of a cell, safely handling the 8 kg vertical lift equivalent at 0.5 MPa.
When sizing this 450 mm stroke model, compare it against adjacent bores: the smaller Ø16 generates 100.5 N push at 0.5 MPa, while the larger Ø25 provides 245.3 N. If your application needs variable air cushioning to handle high kinetic energy at the end of this long travel, step up to the MIC variant. The R back cover features an axial-in port orientation, which helps tidy up rear air line routing along the cylinder axis.
A 450 mm travel demands careful attention to side loading, as the extended rod is susceptible to bending forces; ensure your load is guided to prevent premature seal wear. Furthermore, this standard cylinder will drift if air pressure is lost or the valve is centred, as the TPU bumpers only soften the end-of-stroke impact and do not function as a locking brake. To suspend a load safely during an emergency stop, fit an external rod lock or a pilot-operated check valve.
Quick checklist
This Ø20 mm bore cylinder features a 1/8 inch air port and an M8x1.25 male rod thread. It generates 157 N push and 131.9 N pull at 0.5 MPa, 219.8 N push and 184.7 N pull at 0.7 MPa, with a theoretical maximum force of 32 kgf at 1.0 MPa.
No, because this specific SKU lacks the -S suffix, it has no internal magnet and cannot accept CMSG, DMSG or EMSG switches. You would need the -S variant for sensing, and you can mount this unit using standard ISO 6432 brackets or LB foot, FA flange, SDB pivot and TC trunnion accessories.
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