Airtac MI25~40 Stainless Steel Mini Cylinder MI25X250SR
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X250SR is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 250mm 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
- Stroke250 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 MI25X250SR
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles substantial work within a compact footprint. The Ø25 mm bore uses a 1/8" port and an M10x1.25 male rod thread. Its stainless barrel and rod resist mild corrosion, offering a real advantage over painted alternatives in damp or washdown environments. The rolled, riveted construction keeps the unit light, while fixed TPU bumper pads absorb impact at the stroke ends.
For practical sizing, plan for about 147 N of real work at 0.5 MPa, which safely lifts a 12.5 kg mass vertically with a 2:1 margin. The 250 mm stroke moves through standard ISO 6432 mounting dimensions, dropping directly into standard mini-cylinder brackets. Because this SKU includes the -S magnet, it supports CMSG, DMSG and EMSG position switches. The R back cover provides an axial-in port orientation for tidy tubing.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X250SR Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X250SR |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 250 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 MI25X250SR
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×250 | 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 MI25X250SR Is Used
Package Diverting Gate
Actuates a routing flap on a packaging line, using the 245.3 N push force to redirect heavy cartons reliably at high cycling speeds.
Vertical Parts Elevator
Lifts approximately 12.5 kg bins between conveyor tiers with its 250 mm stroke, relying on the stainless build for humid warehouse conditions.
Clamp Station Actuation
Secures aluminium extrusions during machining operations, where the ISO 6432 mounting interface allows easy bracket integration.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X250SR the Right Cylinder?
When sizing this 245.3 N (at 0.5 MPa) unit, verify if the smaller Ø20 bore (157.0 N) is insufficient, or if the larger Ø32 bore (402.2 N) is required for heavier loads. The 250 mm stroke is well within the 500 mm maximum standard stroke for this bore, but at this length you must carefully manage side loading to prevent rod bending and premature seal wear. Mounting options include LB foot, FA flange, SDB pivot and TC trunnion, alongside the CA, U, R and CM back covers.
Remember that a standard double-acting cylinder drifts when air is lost or the valve is centred; the fixed TPU bumpers only decelerate the end of stroke and do not act as a brake. To hold a load vertically, add an external rod lock or a pilot-operated check valve. Position sensing requires the built-in -S magnet to interface with CMSG, DMSG or EMSG switches.
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 MI25X250SR FAQ
The Ø25 mm bore features a 1/8" port and an M10x1.25 male rod thread. It generates 245.3 N push and 206.1 N pull at 0.5 MPa, 343.4 N push and 288.5 N pull at 0.7 MPa, with a theoretical maximum force of 50 kgf at 1.0 MPa.
It uses fixed TPU bumper pads that decelerate the piston near the stroke end, but these do not function as an adjustable air cushion or a lock. The piston will drift if air is lost, so an external rod lock or pilot check valve is required to hold a vertical load securely.
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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.
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