Airtac MI25~40 Stainless Steel Mini Cylinder MI40X200R
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI40X200R is a genuine double acting round-body mini air cylinder with a Ø40mm bore and 200mm stroke, 1/4" air ports and a stainless-steel barrel and rod for mildly corrosive environments.
- BoreØ40 mm
- Stroke200 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionFixed TPU bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MI25~40 Stainless Steel Mini Cylinder MI40X200R
Delivering 628.3 N of push force at 0.5 MPa, the AirTAC MI40X200R is a robust round-body mini cylinder built for demanding automation. The stainless-steel barrel and Ø16 mm rod shrug off mild corrosion and washdown environments better than painted alternatives. A 200 mm stroke extends with a 1/4" port feeding the double-acting chambers, while fixed TPU bumper pads absorb the end-of-stroke impact. This R-suffix configuration features a rear axial-in port, keeping hose routing compact when rear clearance is tight.
For real-world sizing, plan for roughly 377 N of actual work at 0.5 MPa to maintain a safe margin, which equates to lifting about 32 kg vertically. Because this SKU lacks the -S magnet, it cannot host CMSG, DMSG or EMSG sensors. If your sequence requires position detection, you must specify the -S variant instead.
Airtac MI25~40 Stainless Steel Mini Cylinder MI40X200R Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI40X200R |
|---|---|
| Series | MI mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 200 mm |
| Acting type | Double acting |
| 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 | 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. Note: the Ø40 bore is a larger, non-ISO-6432 size.
Theoretical Output Force (Ø40mm)
| 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.
Model Code: Airtac MI25~40 Stainless Steel Mini Cylinder MI40X200R
| MI | round-body mini cylinder (double-acting). |
|---|---|
| 40 | Bore size in mm. |
| ×200 | 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 MI25~40 Stainless Steel Mini Cylinder MI40X200R Is Used
Diverting Heavy Packages
Pushes heavier cartons on a distribution line where the 628.3 N thrust easily handles side-transfer friction.
Pressing Sub-Assemblies
Provides the downward clamping force for seating bearings or pins, using the 200 mm stroke to clear the tooling during loading.
Pallet Stop Mechanism
Acts as a robust pneumatic stop for loaded pallets, relying on the stainless construction to survive dusty or damp facility floors.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI40X200R the Right Cylinder?
When sizing this 40 mm bore, dropping down to the Ø32 class reduces your 0.5 MPa push force to 402.2 N, whereas this Ø40 already provides 628.3 N. Since Ø40 is the largest available MI bore, moving beyond 879.6 N at 0.7 MPa requires a different cylinder family entirely. The 200 mm stroke is well within the 500 mm maximum, but at full extension you should minimize side-loading to prevent rod bending.
The R-type rear axial port helps streamline manifold layouts in cramped cabinets. Remember that the fixed TPU bumpers only decelerate the piston near the stroke end; they do not function as an adjustable air cushion. Furthermore, if air pressure drops, this standard cylinder will drift and cannot hold a load vertically, so fit an external pilot check valve or rod lock for fail-safe holding.
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 MI25~40 Stainless Steel Mini Cylinder MI40X200R FAQ
This 40 mm bore cylinder uses a 1/4" air port. 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. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
No, this specific SKU does not include a magnet. To use CMSG, DMSG or EMSG reed switches, you must purchase the -S variant of this round-body mini cylinder. Additionally, the fixed TPU bumpers only decelerate the stroke end and do not provide adjustable cushioning.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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