Airtac MID Series Double Rod Mini Cylinder MID20X50S
The AirTAC Airtac MID Series Double Rod Mini Cylinder MID20X50S is a genuine double acting, double rod round-body mini air cylinder with a Ø20mm bore and 50mm 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.
- BoreØ20 mm
- Stroke50 mm
- Port size1/8"
- Acting typeDouble acting, double rod
- Rod threadM8×1.25
- CushionFixed TPU bumper pads
About the Airtac MID Series Double Rod Mini Cylinder MID20X50S
Delivering 131.9 N of thrust at 0.5 MPa in both directions, the AirTAC MID20X50S is a round-body stainless steel mini cylinder built for double-acting operation. Because a rod exits both end covers, extend and retract forces are perfectly equal, and the twin-rod design naturally resists rotation and side loads without needing an external guide. The -S suffix indicates a built-in piston magnet, enabling position sensing with CMSG, DMSG, or EMSG switches.
This 20 mm bore unit features an 8 mm piston rod, an M8x1.25 male rod thread, and a 1/8" air port. It conforms to the ISO 6432 mounting interface for easy bracket integration. The stainless barrel and rod withstand mild corrosion and washdown environments. For application sizing, its safe working load is roughly 79 N, yielding a vertical lift capacity of about 6.7 kg with a 2:1 safety margin. Fixed TPU bumper pads decelerate the stroke ends, operating at speeds from 30 to 800 mm/s.
Airtac MID Series Double Rod Mini Cylinder MID20X50S Technical Specifications
| Model | Airtac MID Series Double Rod Mini Cylinder MID20X50S |
|---|---|
| Series | MID ISO 6432 mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 50 mm |
| Acting type | Double acting, double rod |
| 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.
Theoretical Output Force (Ø20mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 132 N |
| 0.7 MPa | 185 N |
| Max (@1.0 MPa) | 27 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
Model Code: Airtac MID Series Double Rod Mini Cylinder MID20X50S
| MID | ISO 6432 round-body mini cylinder (double-rod). |
|---|---|
| 20 | Bore size in mm. |
| ×50 | 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.
Where the Airtac MID Series Double Rod Mini Cylinder MID20X50S Is Used
Symmetric Shuttle Transfer
Moving light workpieces between stations is steady with 131.9 N of equal force both ways, preventing rotational drift during the transfer cycle.
Back-Rod Switch Tripping
The exposed rear rod end provides a convenient mounting point to physically trigger a limit switch or carry a flag without adding external guide rails.
Lab Washdown Dispensing
The stainless steel barrel and rod resist mild corrosion in damp laboratory settings, while the 6.7 kg vertical lift capacity handles fluid dispensing heads.
Is the Airtac MID Series Double Rod Mini Cylinder MID20X50S the Right Cylinder?
When sizing this 20 mm bore, stepping down to the MID16X50S reduces the equal-both-ways force to 86.4 N at 0.5 MPa, while stepping up to the MID25X50S increases it to 206.1 N. The double-rod configuration is ideal when you need anti-rotation stability, a back-rod connection to trip a switch, or symmetric shuttle movements. Choose LB foot, FA flange, or TC trunnion mounts, as the SDB pivot block is unavailable for this variant. Remember that the TPU bumpers only soften the stroke end; they do not lock the piston. To hold a load vertically during air loss, incorporate an external rod lock or pilot-operated check valve.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Use correct back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MID Series Double Rod Mini Cylinder MID20X50S FAQ
The MID20X50S provides equal force in both directions because a rod occupies each side. It delivers 131.9 N at 0.5 MPa, 184.7 N at 0.7 MPa, and a maximum theoretical force of 26.9 kgf at 1.0 MPa. It uses a 1/8" air port.
The twin through-rod resists side loads and rotation, and the rear rod end can drive a second load or trip a switch. The -S suffix means it has a built-in magnet for CMSG, DMSG, or EMSG sensors. Fixed TPU bumpers decelerate the stroke but do not lock the load.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac MID Series Double Rod Mini Cylinder MID20X50S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.