Airtac MI25~40 Stainless Steel Mini Cylinder MI25X400R
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X400R is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 400mm 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.
- BoreØ25 mm
- Stroke400 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM10×1.25
- 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 MI25X400R
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles substantial work across a 400 mm stroke. The Ø25 mm bore uses a 1/8" port and an M10x1.25 male rod thread. Its stainless barrel and rod naturally shrug off mild corrosion, giving a real advantage over painted alternatives in damp or washdown settings. The R back cover features an axial-in port orientation for tidy rear plumbing.
Because the stroke end relies on fixed TPU bumper pads to decelerate the piston rather than an adjustable cushion, plan for a safe working load of roughly 147 N. That translates to lifting about 12.5 kg vertically with a 2:1 safety margin. This SKU omits the internal magnet, so it cannot host CMSG, DMSG or EMSG sensors; order the -S variant if position feedback is required.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X400R Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X400R |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 400 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| 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 (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 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 MI25X400R
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×400 | 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 MI25X400R Is Used
Package Diverters
Pushes heavy cartons off a main belt line using the 245.3 N thrust at 0.5 MPa, with the 400 mm stroke clearing wide transfer plates.
Vertical Crate Lifting
Raises lightweight plastic crates weighing up to 12.5 kg in pick-and-place cells, safely operating within a 2:1 load margin.
Gate Actuation
Opens and closes washdown-resistant machine guarding doors, leveraging the stainless rod and barrel to endure humid factory environments.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X400R the Right Cylinder?
When sizing this unit, the neighbouring Ø20 bore yields 157 N of push at 0.5 MPa, whereas stepping up to the Ø32 bore provides 402 N. Choose the Ø25 to efficiently bridge that gap. The ISO 6432 mounting interface on this Ø25 bore lets it drop directly into standard mini-cylinder brackets and clevises. Available hardware includes LB foot, FA flange, SDB pivot and TC trunnion mounts, plus CA, U, R and CM back covers.
A 400 mm travel distance on a Ø10 mm rod demands careful alignment to prevent side-loading and rod bending. Furthermore, a standard double-acting cylinder drifts when air is lost or the valve centres—the bumpers only soften the end of stroke and act as neither a lock nor a brake. To suspend a load safely, fit an external rod lock or a 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 MI25~40 Stainless Steel Mini Cylinder MI25X400R FAQ
At 0.5 MPa it pushes with 245.3 N and pulls with 206.1 N. At 0.7 MPa the push is 343.4 N and pull is 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa. The air port is 1/8" and the male rod thread is M10x1.25.
No, this specific SKU lacks an internal magnet and cannot accept CMSG, DMSG or EMSG switches. You must specify the -S variant (with magnet) to enable magnetic sensing. The unit uses fixed TPU bumper pads for end-of-stroke deceleration rather than an adjustable air cushion.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac MI25~40 Stainless Steel Mini Cylinder MI25X400R
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.