Airtac MI25~40 Stainless Steel Mini Cylinder MI25X70SU
The AirTAC Airtac MI25~40 Stainless Steel Mini Cylinder MI25X70SU is a genuine double acting round-body mini air cylinder with a Ø25mm bore and 70mm 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
- Stroke70 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 MI25X70SU
Delivering 245.3 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles robust actuation tasks. The Ø25 mm bore operates on a 1/8 inch port and features a 70 mm stroke. Its riveted stainless barrel and rod resist mild corrosion, giving it a real edge over painted alternatives in damp or washdown settings. The built-in piston magnet allows direct mounting of CMSG, DMSG or EMSG switches for end-of-stroke confirmation.
Because the 245.3 N rating is theoretical, plan for roughly 147 N of actual work at 0.5 MPa to account for friction and pressure drops. This translates to lifting about 12.5 kg vertically with a safe 2:1 margin. The U-style 90-degree rear cover offers flexible pivot mounting options. Fixed TPU bumper pads absorb the end-of-stroke impact, decelerating the piston smoothly without the complexity of adjustable cushioning.
Airtac MI25~40 Stainless Steel Mini Cylinder MI25X70SU Technical Specifications
| Model | Airtac MI25~40 Stainless Steel Mini Cylinder MI25X70SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 70 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 MI25X70SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×70 | 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 MI25X70SU Is Used
Package Diverting Gate
Actuates a routing flap on a packaging conveyor, using the 245.3 N thrust to push cardboard cartons into secondary lanes reliably.
Clamp Station
Secures aluminium extrusions at a CNC machining centre, providing consistent clamping pressure within a compact 70 mm stroke envelope.
Vertical Parts Lift
Raises lightweight plastic tote bins between conveyor tiers, safely lifting loads around 12.5 kg with its built-in magnet for position feedback.
Is the Airtac MI25~40 Stainless Steel Mini Cylinder MI25X70SU the Right Cylinder?
When sizing this 70 mm stroke unit, compare it against its neighbours: the Ø20 bore generates 157.0 N of push at 0.5 MPa, while the larger Ø32 provides 402.2 N. If your application requires holding a load vertically during an air loss or valve centre state, remember this standard cylinder will drift; the TPU pads only soften the stroke end and act as neither a brake nor a lock. You must add an external pilot-operated check valve or rod lock for secure positioning.
This SKU includes the -S magnet for CMSG, DMSG or EMSG sensors. The 1/8 inch port and M10x1.25 male rod thread are fixed by the Ø25 bore. While the 70 mm stroke is well within the 500 mm maximum, always verify side-load conditions to prevent rod bending, and note that the U back cover dictates a 90-degree mounting orientation.
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 MI25X70SU FAQ
This Ø25 mm bore cylinder features a 1/8 inch air port. 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.
Yes, the Ø25 bore uses the ISO 6432 mini-cylinder mounting interface, dropping easily into standard brackets and clevises. It does not hold position on air loss; the fixed TPU bumper pads only decelerate the stroke end, so an external rod lock or pilot check valve is required for load holding.
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.
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