AirTAC MI40 Mini Air Cylinder, 40 mm Bore
Every AirTAC MI40 configuration on one page: 186 stock order codes with strokes from 10 to 700 mm and 7 cover/mounting combinations, from $45.82. Pick a stroke, cover and mounting and version to see the exact order code and price.
This combination is not a stock order code. Request a quote and we will confirm availability and price.
- 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 MI40
The AirTAC MI40 is a double-acting stainless-steel mini cylinder with a 40 mm bore and a 16 mm piston rod. At 0.5 MPa it pushes 628 N and pulls 528 N; at 0.7 MPa that rises to 880 N push and 739 N pull. Force depends on bore and pressure only, so every stroke on this page gives the same output.
All MI40 versions share 1/4" air ports, an M12×1.25 rod thread and rubber bumpers at both ends. The cylinder runs on filtered air between 0.15 and 1.0 MPa (proof 1.5 MPa), from -20 to +70 °C, at 30 to 800 mm/s. This page lists 186 stock order codes with strokes from 10 to 700 mm; the catalog maximum stroke is 500 mm, and the longer codes are non-standard strokes we already supply.
MI40 Technical Specifications
| Bore size | Ø40 mm |
|---|---|
| Stock strokes | 10 – 700 mm |
| Catalog maximum stroke | 500 mm (longer on request) |
| Acting type | Double acting |
| Port size | 1/4" (PT standard) |
| Piston rod / rod thread | Ø16 mm / M12×1.25 |
| Fluid | Air (filtered by 40 µm 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 | Rubber bumper at both ends |
Source: AirTAC Products Catalog 2026A (PDF01-P0426), MI series ordering code and specifications.
Theoretical output force (Ø40 mm)
| Pressure | Push | Pull |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
Push = pressure × bore area; pull subtracts the Ø16 mm rod area. Usable force is lower because of friction and back-pressure.
How the MI40 Order Code Is Built
| MI40 | Series and bore (40 mm) |
|---|---|
| X100 | Stroke in mm |
| S | Built-in magnet for position sensors (blank = none) |
| CA / CM / R / U | Back cover: CA clevis-end cover; CM round-end cover; R axial-port cover; U radial-port cover |
| FA / LB / SDB / TC | Mounting: FA front flange; LB foot bracket; SDB rear pivot bracket; TC center trunnion (blank = none) |
| G / T | Port thread: G = G (BSPP), T = NPT, blank = PT |
All AirTAC MI40 Order Codes (186)
Each order code links to its own datasheet page. Use Select to load it into the configurator above.
| Order code | Stroke (mm) | Back cover · Mounting | Magnet · Thread | Price | Select |
|---|---|---|---|---|---|
| MI40X10CM | 10 mm | CM round-end cover | - · PT | $45.82 | |
| MI40X10SCM | 10 mm | CM round-end cover | S · PT | $48.14 | |
| MI40X10R | 10 mm | R axial-port cover | - · PT | $45.82 | |
| MI40X10SR | 10 mm | R axial-port cover | S · PT | $48.14 | |
| MI40X10U | 10 mm | U radial-port cover | - · PT | $45.82 | |
| MI40X10SU | 10 mm | U radial-port cover | S · PT | $48.14 | |
| MI40X15CM | 15 mm | CM round-end cover | - · PT | $45.82 | |
| MI40X15SCM | 15 mm | CM round-end cover | S · PT | $48.14 | |
| MI40X15SCMSDB | 15 mm | CM round-end cover + SDB rear pivot bracket | S · PT | $52.33 | |
| MI40X15R | 15 mm | R axial-port cover | - · PT | $45.82 | |
| MI40X15SR | 15 mm | R axial-port cover | S · PT | $48.14 | |
| MI40X15U | 15 mm | U radial-port cover | - · PT | $45.82 | |
| MI40X15SU | 15 mm | U radial-port cover | S · PT | $48.14 | |
| MI40X20CM | 20 mm | CM round-end cover | - · PT | $45.82 | |
| MI40X20SCM | 20 mm | CM round-end cover | S · PT | $48.14 | |
| MI40X20R | 20 mm | R axial-port cover | - · PT | $45.82 | |
| MI40X20SR | 20 mm | R axial-port cover | S · PT | $48.14 | |
| MI40X20U | 20 mm | U radial-port cover | - · PT | $45.82 | |
| MI40X20SU | 20 mm | U radial-port cover | S · PT | $48.14 | |
| MI40X25CM | 25 mm | CM round-end cover | - · PT | $45.82 | |
| MI40X25SCM | 25 mm | CM round-end cover | S · PT | $48.14 | |
| MI40X25SCMTC | 25 mm | CM round-end cover + TC center trunnion | S · PT | $62.10 | |
| MI40X25R | 25 mm | R axial-port cover | - · PT | $45.82 | |
| MI40X25SR | 25 mm | R axial-port cover | S · PT | $48.14 | |
| MI40X25U | 25 mm | U radial-port cover | - · PT | $45.82 | |
| MI40X25SU | 25 mm | U radial-port cover | S · PT | $48.14 | |
| MI40X25SUTC | 25 mm | U radial-port cover + TC center trunnion | S · PT | $62.10 | |
| MI40X30CM | 30 mm | CM round-end cover | - · PT | $49.08 | |
| MI40X30SCM | 30 mm | CM round-end cover | S · PT | $51.40 | |
| MI40X30R | 30 mm | R axial-port cover | - · PT | $49.08 | |
| MI40X30SR | 30 mm | R axial-port cover | S · PT | $51.40 | |
| MI40X30U | 30 mm | U radial-port cover | - · PT | $49.08 | |
| MI40X30SU | 30 mm | U radial-port cover | S · PT | $51.40 | |
| MI40X35SU | 35 mm | U radial-port cover | S · PT | $51.40 | |
| MI40X40CM | 40 mm | CM round-end cover | - · PT | $49.08 | |
| MI40X40SCM | 40 mm | CM round-end cover | S · PT | $51.40 | |
| MI40X40R | 40 mm | R axial-port cover | - · PT | $49.08 | |
| MI40X40SR | 40 mm | R axial-port cover | S · PT | $51.40 | |
| MI40X40U | 40 mm | U radial-port cover | - · PT | $49.08 | |
| MI40X40SU | 40 mm | U radial-port cover | S · PT | $51.40 | |
| MI40X45CM | 45 mm | CM round-end cover | - · PT | $49.08 | |
| MI40X45SCM | 45 mm | CM round-end cover | S · PT | $51.40 | |
| MI40X45SU | 45 mm | U radial-port cover | S · PT | $51.40 | |
| MI40X50CM | 50 mm | CM round-end cover | - · PT | $49.08 | |
| MI40X50SCM | 50 mm | CM round-end cover | S · PT | $51.40 | |
| MI40X50R | 50 mm | R axial-port cover | - · PT | $49.08 | |
| MI40X50SR | 50 mm | R axial-port cover | S · PT | $51.40 | |
| MI40X50U | 50 mm | U radial-port cover | - · PT | $49.08 | |
| MI40X50SU | 50 mm | U radial-port cover | S · PT | $51.40 | |
| MI40X50SUTC | 50 mm | U radial-port cover + TC center trunnion | S · PT | $65.36 | |
| MI40X55U | 55 mm | U radial-port cover | - · PT | $52.54 | |
| MI40X55SU | 55 mm | U radial-port cover | S · PT | $54.86 | |
| MI40X60CM | 60 mm | CM round-end cover | - · PT | $52.54 | |
| MI40X60SCM | 60 mm | CM round-end cover | S · PT | $54.86 | |
| MI40X60CMTC | 60 mm | CM round-end cover + TC center trunnion | - · PT | $66.50 | |
| MI40X60R | 60 mm | R axial-port cover | - · PT | $52.54 | |
| MI40X60SR | 60 mm | R axial-port cover | S · PT | $54.86 | |
| MI40X60U | 60 mm | U radial-port cover | - · PT | $52.54 | |
| MI40X60SU | 60 mm | U radial-port cover | S · PT | $54.86 | |
| MI40X60UTC | 60 mm | U radial-port cover + TC center trunnion | - · PT | $66.50 | |
| MI40X60SUTC | 60 mm | U radial-port cover + TC center trunnion | S · PT | $68.82 | |
| MI40X70SCM | 70 mm | CM round-end cover | S · PT | $54.86 | |
| MI40X70SU | 70 mm | U radial-port cover | S · PT | $54.86 | |
| MI40X75CM | 75 mm | CM round-end cover | - · PT | $52.54 | |
| MI40X75SCM | 75 mm | CM round-end cover | S · PT | $54.86 | |
| MI40X75SCMTC | 75 mm | CM round-end cover + TC center trunnion | S · PT | $68.82 | |
| MI40X75R | 75 mm | R axial-port cover | - · PT | $52.54 | |
| MI40X75SR | 75 mm | R axial-port cover | S · PT | $54.86 | |
| MI40X75U | 75 mm | U radial-port cover | - · PT | $52.54 | |
| MI40X75SU | 75 mm | U radial-port cover | S · PT | $54.86 | |
| MI40X80CM | 80 mm | CM round-end cover | - · PT | $55.80 | |
| MI40X80SCM | 80 mm | CM round-end cover | S · PT | $58.12 | |
| MI40X80R | 80 mm | R axial-port cover | - · PT | $55.80 | |
| MI40X80SR | 80 mm | R axial-port cover | S · PT | $58.12 | |
| MI40X80U | 80 mm | U radial-port cover | - · PT | $55.80 | |
| MI40X80SU | 80 mm | U radial-port cover | S · PT | $58.12 | |
| MI40X85SCM | 85 mm | CM round-end cover | S · PT | $58.12 | |
| MI40X90SU | 90 mm | U radial-port cover | S · PT | $58.12 | |
| MI40X100CM | 100 mm | CM round-end cover | - · PT | $55.80 | |
| MI40X100SCM | 100 mm | CM round-end cover | S · PT | $58.12 | |
| MI40X100R | 100 mm | R axial-port cover | - · PT | $55.80 | |
| MI40X100SR | 100 mm | R axial-port cover | S · PT | $58.12 | |
| MI40X100U | 100 mm | U radial-port cover | - · PT | $55.80 | |
| MI40X100SU | 100 mm | U radial-port cover | S · PT | $58.12 | |
| MI40X100SUTC | 100 mm | U radial-port cover + TC center trunnion | S · PT | $72.08 | |
| MI40X110U | 110 mm | U radial-port cover | - · PT | $59.31 | |
| MI40X110SU | 110 mm | U radial-port cover | S · PT | $61.63 | |
| MI40X120SCM | 120 mm | CM round-end cover | S · PT | $61.63 | |
| MI40X120SU | 120 mm | U radial-port cover | S · PT | $61.63 | |
| MI40X125CM | 125 mm | CM round-end cover | - · PT | $59.31 | |
| MI40X125SCM | 125 mm | CM round-end cover | S · PT | $61.63 | |
| MI40X125R | 125 mm | R axial-port cover | - · PT | $59.31 | |
| MI40X125SR | 125 mm | R axial-port cover | S · PT | $61.63 | |
| MI40X125U | 125 mm | U radial-port cover | - · PT | $59.31 | |
| MI40X125SU | 125 mm | U radial-port cover | S · PT | $61.63 | |
| MI40X125SUTC | 125 mm | U radial-port cover + TC center trunnion | S · PT | $75.59 | |
| MI40X130SCM | 130 mm | CM round-end cover | S · PT | $64.89 | |
| MI40X140CM | 140 mm | CM round-end cover | - · PT | $62.57 | |
| MI40X140SU | 140 mm | U radial-port cover | S · PT | $64.89 | |
| MI40X150CM | 150 mm | CM round-end cover | - · PT | $62.57 | |
| MI40X150SCM | 150 mm | CM round-end cover | S · PT | $64.89 | |
| MI40X150R | 150 mm | R axial-port cover | - · PT | $62.57 | |
| MI40X150SR | 150 mm | R axial-port cover | S · PT | $64.89 | |
| MI40X150U | 150 mm | U radial-port cover | - · PT | $62.57 | |
| MI40X150SU | 150 mm | U radial-port cover | S · PT | $64.89 | |
| MI40X150SUSDB | 150 mm | U radial-port cover + SDB rear pivot bracket | S · PT | $69.08 | |
| MI40X150SUTC | 150 mm | U radial-port cover + TC center trunnion | S · PT | $78.85 | |
| MI40X160CM | 160 mm | CM round-end cover | - · PT | $66.03 | |
| MI40X160SCM | 160 mm | CM round-end cover | S · PT | $68.36 | |
| MI40X160R | 160 mm | R axial-port cover | - · PT | $66.03 | |
| MI40X160SR | 160 mm | R axial-port cover | S · PT | $68.36 | |
| MI40X160U | 160 mm | U radial-port cover | - · PT | $66.03 | |
| MI40X160SU | 160 mm | U radial-port cover | S · PT | $68.36 | |
| MI40X175CM | 175 mm | CM round-end cover | - · PT | $66.03 | |
| MI40X175SCM | 175 mm | CM round-end cover | S · PT | $68.36 | |
| MI40X175R | 175 mm | R axial-port cover | - · PT | $66.03 | |
| MI40X175SR | 175 mm | R axial-port cover | S · PT | $68.36 | |
| MI40X175U | 175 mm | U radial-port cover | - · PT | $66.03 | |
| MI40X175SU | 175 mm | U radial-port cover | S · PT | $68.36 | |
| MI40X180SCM | 180 mm | CM round-end cover | S · PT | $71.61 | |
| MI40X200CM | 200 mm | CM round-end cover | - · PT | $69.29 | |
| MI40X200SCM | 200 mm | CM round-end cover | S · PT | $71.61 | |
| MI40X200R | 200 mm | R axial-port cover | - · PT | $69.29 | |
| MI40X200SR | 200 mm | R axial-port cover | S · PT | $71.61 | |
| MI40X200U | 200 mm | U radial-port cover | - · PT | $69.29 | |
| MI40X200SU | 200 mm | U radial-port cover | S · PT | $71.61 | |
| MI40X200SUTC | 200 mm | U radial-port cover + TC center trunnion | S · PT | $85.57 | |
| MI40X225CM | 225 mm | CM round-end cover | - · PT | $72.80 | |
| MI40X225SCM | 225 mm | CM round-end cover | S · PT | $75.13 | |
| MI40X225R | 225 mm | R axial-port cover | - · PT | $72.80 | |
| MI40X225SR | 225 mm | R axial-port cover | S · PT | $75.13 | |
| MI40X225U | 225 mm | U radial-port cover | - · PT | $72.80 | |
| MI40X225SU | 225 mm | U radial-port cover | S · PT | $75.13 | |
| MI40X250CM | 250 mm | CM round-end cover | - · PT | $79.52 | |
| MI40X250SCM | 250 mm | CM round-end cover | S · PT | $81.85 | |
| MI40X250R | 250 mm | R axial-port cover | - · PT | $79.52 | |
| MI40X250SR | 250 mm | R axial-port cover | S · PT | $81.85 | |
| MI40X250U | 250 mm | U radial-port cover | - · PT | $79.52 | |
| MI40X250SU | 250 mm | U radial-port cover | S · PT | $81.85 | |
| MI40X275CM | 275 mm | CM round-end cover | - · PT | $86.50 | |
| MI40X280SU | 280 mm | U radial-port cover | S · PT | $88.83 | |
| MI40X290SU | 290 mm | U radial-port cover | S · PT | $88.83 | |
| MI40X300CM | 300 mm | CM round-end cover | - · PT | $86.50 | |
| MI40X300SCM | 300 mm | CM round-end cover | S · PT | $88.83 | |
| MI40X300R | 300 mm | R axial-port cover | - · PT | $86.50 | |
| MI40X300SR | 300 mm | R axial-port cover | S · PT | $88.83 | |
| MI40X300U | 300 mm | U radial-port cover | - · PT | $86.50 | |
| MI40X300SU | 300 mm | U radial-port cover | S · PT | $88.83 | |
| MI40X300SUTC | 300 mm | U radial-port cover + TC center trunnion | S · PT | $102.79 | |
| MI40X350CM | 350 mm | CM round-end cover | - · PT | $93.48 | |
| MI40X350SCM | 350 mm | CM round-end cover | S · PT | $95.81 | |
| MI40X350R | 350 mm | R axial-port cover | - · PT | $93.48 | |
| MI40X350SR | 350 mm | R axial-port cover | S · PT | $95.81 | |
| MI40X350U | 350 mm | U radial-port cover | - · PT | $93.48 | |
| MI40X350SU | 350 mm | U radial-port cover | S · PT | $95.81 | |
| MI40X400CM | 400 mm | CM round-end cover | - · PT | $100.46 | |
| MI40X400SCM | 400 mm | CM round-end cover | S · PT | $102.79 | |
| MI40X400R | 400 mm | R axial-port cover | - · PT | $100.46 | |
| MI40X400SR | 400 mm | R axial-port cover | S · PT | $102.79 | |
| MI40X400U | 400 mm | U radial-port cover | - · PT | $100.46 | |
| MI40X400SU | 400 mm | U radial-port cover | S · PT | $102.79 | |
| MI40X450CM | 450 mm | CM round-end cover | - · PT | $107.70 | |
| MI40X450SCM | 450 mm | CM round-end cover | S · PT | $110.02 | |
| MI40X450R | 450 mm | R axial-port cover | - · PT | $107.70 | |
| MI40X450SR | 450 mm | R axial-port cover | S · PT | $110.02 | |
| MI40X450U | 450 mm | U radial-port cover | - · PT | $107.70 | |
| MI40X450SU | 450 mm | U radial-port cover | S · PT | $110.02 | |
| MI40X500CM | 500 mm | CM round-end cover | - · PT | $115.14 | |
| MI40X500SCM | 500 mm | CM round-end cover | S · PT | $117.47 | |
| MI40X500R | 500 mm | R axial-port cover | - · PT | $115.14 | |
| MI40X500SR | 500 mm | R axial-port cover | S · PT | $117.47 | |
| MI40X500U | 500 mm | U radial-port cover | - · PT | $115.14 | |
| MI40X500SU | 500 mm | U radial-port cover | S · PT | $117.47 | |
| MI40X550SCM | 550 mm | CM round-end cover | S · PT | $124.66 | |
| MI40X550SU | 550 mm | U radial-port cover | S · PT | $124.66 | |
| MI40X600CM | 600 mm | CM round-end cover | - · PT | $129.57 | |
| MI40X600SCM | 600 mm | CM round-end cover | S · PT | $131.89 | |
| MI40X600SCMTC | 600 mm | CM round-end cover + TC center trunnion | S · PT | $145.85 | |
| MI40X600R | 600 mm | R axial-port cover | - · PT | $129.57 | |
| MI40X600SR | 600 mm | R axial-port cover | S · PT | $131.89 | |
| MI40X600U | 600 mm | U radial-port cover | - · PT | $129.57 | |
| MI40X600SU | 600 mm | U radial-port cover | S · PT | $131.89 | |
| MI40X650SCM | 650 mm | CM round-end cover | S · PT | $139.08 | |
| MI40X700CM | 700 mm | CM round-end cover | - · PT | $143.99 | |
| MI40X700SCM | 700 mm | CM round-end cover | S · PT | $146.32 | |
| MI40X700SU | 700 mm | U radial-port cover | S · PT | $146.32 |
Need a combination that is not listed? Request a quote.
Where the MI40 Is Used
General automation
About 628 N at 0.5 MPa covers most pushing, lifting and indexing tasks.
Clamping fixtures
Rigid mountings hold the cylinder for clamps and presses.
Doors, gates and levers
Pivoting covers and brackets drive mechanisms that swing.
Choosing the Right MI40 Configuration
Start with the stroke. Pick the exact travel your machine needs; a longer stroke adds length, weight and air consumption without adding force. If your length is not listed, request a quote and we will confirm whether it can be built.
Then choose the back cover and mounting. The back cover sets how the rear of the cylinder is fixed or where its air enters (CM round-end cover, R axial-port cover, U radial-port cover). Mounting brackets on this page: SDB rear pivot bracket, TC center trunnion. R and U covers set the rear air inlet (axial or radial); a clevis-end cover with an SDB bracket or a TC trunnion lets the cylinder swing, while an FA flange or LB foot holds it rigid.
Finally pick the version: S adds a magnet for position sensors.
AirTAC MI40 FAQ
No. Every MI40 gives about 628 N push and 528 N pull at 0.5 MPa, whatever the stroke.
1/4" ports, PT thread as standard.
Back covers: CM round-end cover, R axial-port cover, U radial-port cover. Brackets: SDB rear pivot bracket, TC center trunnion. Pick a pivoting cover or bracket when the load moves in an arc, a rigid one for straight-line loads.
Usually yes. Request a quote with the stroke, mounting and version and we will confirm whether it can be built, plus price and lead time.
0.15 to 1.0 MPa operating pressure (proof 1.5 MPa) and -20 to +70 °C on filtered air.
No. You can order a single MI40. Orders are processed and handed to the carrier within 3-5 business days.
Buying the MI40 from AirtacDistr
Genuine AirTAC parts
Every order code on this page is the AirTAC factory part number. Specifications follow the AirTAC Products Catalog 2026A. About us
Ready in 3-5 business days
That is our time to process the order and hand it to the carrier. No minimum order: a single piece can be ordered.
14-day returns, 1-year warranty
Return within 14 days of delivery; the buyer pays return shipping. The warranty covers defects not caused by misuse. Return policy
Engineering help
Send your application details and we will confirm the right order code, usually within 7-8 hours. Ask us
Page data checked against the live catalog on 2026-10-28.
Request a Quote for the MI40
Send the order code, quantity and destination. We confirm price, stock and lead time, usually within 7-8 hours.