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AirTAC MFJ Series · Ø40 mm double-rod stainless-steel mini cylinder

AirTAC MFJ40 Adjustable Double-Rod Mini Cylinder, 40 mm Bore

Every AirTAC MFJ40 configuration on one page: 208 stock order codes with strokes from 10 to 350 mm and 7 adjustment values (10-100 mm), 3 mountings, from $59.76. Pick a stroke, adjustment, mounting and version to see the exact order code and price.

Order code MFJ40X175-10 Full MFJ40X175-10 datasheet

This combination is not a stock order code. Request a quote and we will confirm availability and price.

$81.99 $91.21Save 10%
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  • 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 MFJ40

The AirTAC MFJ40 is a double-rod, double-acting stainless-steel mini cylinder with a 40 mm bore and a 16 mm piston rod. The rod runs through both end covers, so push and pull are equal: 528 N at 0.5 MPa and 739 N at 0.7 MPa. The rear rod end carries the stroke adjuster: the travel can be shortened by up to the adjustment amount in the code (10-100 mm across the codes on this page). Force depends on bore and pressure only, so every stroke on this page gives the same output.

All MFJ40 versions share 1/4" air ports, an M14×1.5 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 208 stock order codes with strokes from 10 to 350 mm; the catalog maximum stroke is 500 mm.

MFJ40 Technical Specifications

Bore sizeØ40 mm
Stock strokes10 – 350 mm
Catalog maximum stroke500 mm (longer on request)
Acting typeDouble acting, double rod
Port size1/4" (PT standard)
Piston rod / rod threadØ16 mm / M14×1.5
FluidAir (filtered by 40 µm element)
Operating pressure0.15 – 1.0 MPa
Proof pressure1.5 MPa
Temperature-20 to +70 °C
Speed range30 – 800 mm/s
CushionRubber bumper at both ends

Source: AirTAC Products Catalog 2026A (PDF01-P0443), MF series (MFJ) ordering code and specifications.

Theoretical output force (Ø40 mm)

PressurePushPull
0.5 MPa528 N528 N
0.7 MPa739 N739 N

Both directions act on the bore area minus the Ø16 mm rod area, because the rod passes through both end covers. Usable force is lower because of friction and back-pressure.

How the MFJ40 Order Code Is Built

MFJ40Series and bore (40 mm)
X100Stroke in mm
-10Stroke adjustment in mm (10, 20, 30, 40, 50, 75, 100)
SBuilt-in magnet for position sensors (blank = none)
FA / LB / TCMounting: FA front flange; LB foot bracket; TC center trunnion (blank = none)
G / TPort thread: G = G (BSPP), T = NPT, blank = PT

All AirTAC MFJ40 Order Codes (208)

Each order code links to its own datasheet page. Use Select to load it into the configurator above.

Order codeStroke (mm)Adjust (mm)Mounting · Magnet · ThreadPriceSelect
MFJ40X10-1010 mm10 mmBasic (no mounting) · - · PT$59.76
MFJ40X15-1015 mm10 mmBasic (no mounting) · - · PT$59.76
MFJ40X15-2015 mm20 mmBasic (no mounting) · - · PT$59.76
MFJ40X15-20S15 mm20 mmBasic (no mounting) · S · PT$61.94
MFJ40X20-1020 mm10 mmBasic (no mounting) · - · PT$59.76
MFJ40X20-10S20 mm10 mmBasic (no mounting) · S · PT$61.94
MFJ40X20-2020 mm20 mmBasic (no mounting) · - · PT$59.76
MFJ40X20-20S20 mm20 mmBasic (no mounting) · S · PT$61.94
MFJ40X25-1025 mm10 mmBasic (no mounting) · - · PT$59.76
MFJ40X25-10S25 mm10 mmBasic (no mounting) · S · PT$61.94
MFJ40X25-2025 mm20 mmBasic (no mounting) · - · PT$59.76
MFJ40X25-20S25 mm20 mmBasic (no mounting) · S · PT$61.94
MFJ40X25-20STC25 mm20 mmTC center trunnion · S · PT$75.01
MFJ40X25-3025 mm30 mmBasic (no mounting) · - · PT$59.76
MFJ40X25-30S25 mm30 mmBasic (no mounting) · S · PT$61.94
MFJ40X30-1030 mm10 mmBasic (no mounting) · - · PT$63.05
MFJ40X30-10S30 mm10 mmBasic (no mounting) · S · PT$65.23
MFJ40X30-2030 mm20 mmBasic (no mounting) · - · PT$63.05
MFJ40X30-20S30 mm20 mmBasic (no mounting) · S · PT$65.23
MFJ40X30-3030 mm30 mmBasic (no mounting) · - · PT$63.05
MFJ40X30-30S30 mm30 mmBasic (no mounting) · S · PT$65.23
MFJ40X40-1040 mm10 mmBasic (no mounting) · - · PT$63.05
MFJ40X40-10S40 mm10 mmBasic (no mounting) · S · PT$65.23
MFJ40X40-2040 mm20 mmBasic (no mounting) · - · PT$63.05
MFJ40X40-20S40 mm20 mmBasic (no mounting) · S · PT$65.23
MFJ40X40-3040 mm30 mmBasic (no mounting) · - · PT$63.05
MFJ40X40-30S40 mm30 mmBasic (no mounting) · S · PT$65.23
MFJ40X40-4040 mm40 mmBasic (no mounting) · - · PT$63.05
MFJ40X40-40S40 mm40 mmBasic (no mounting) · S · PT$65.23
MFJ40X45-10S45 mm10 mmBasic (no mounting) · S · PT$65.23
MFJ40X50-1050 mm10 mmBasic (no mounting) · - · PT$63.05
MFJ40X50-10S50 mm10 mmBasic (no mounting) · S · PT$65.23
MFJ40X50-2050 mm20 mmBasic (no mounting) · - · PT$63.05
MFJ40X50-20S50 mm20 mmBasic (no mounting) · S · PT$65.23
MFJ40X50-3050 mm30 mmBasic (no mounting) · - · PT$63.05
MFJ40X50-30S50 mm30 mmBasic (no mounting) · S · PT$65.23
MFJ40X50-4050 mm40 mmBasic (no mounting) · - · PT$63.05
MFJ40X50-40S50 mm40 mmBasic (no mounting) · S · PT$65.23
MFJ40X50-5050 mm50 mmBasic (no mounting) · - · PT$63.05
MFJ40X50-50S50 mm50 mmBasic (no mounting) · S · PT$65.23
MFJ40X50-50SFA50 mm50 mmFA front flange · S · PT$67.85
MFJ40X50-50STC50 mm50 mmTC center trunnion · S · PT$78.31
MFJ40X60-1060 mm10 mmBasic (no mounting) · - · PT$66.73
MFJ40X60-10S60 mm10 mmBasic (no mounting) · S · PT$68.92
MFJ40X60-2060 mm20 mmBasic (no mounting) · - · PT$66.73
MFJ40X60-20S60 mm20 mmBasic (no mounting) · S · PT$68.92
MFJ40X60-3060 mm30 mmBasic (no mounting) · - · PT$66.73
MFJ40X60-30S60 mm30 mmBasic (no mounting) · S · PT$68.92
MFJ40X60-4060 mm40 mmBasic (no mounting) · - · PT$66.73
MFJ40X60-5060 mm50 mmBasic (no mounting) · - · PT$66.73
MFJ40X60-50S60 mm50 mmBasic (no mounting) · S · PT$68.92
MFJ40X65-2065 mm20 mmBasic (no mounting) · - · PT$66.73
MFJ40X65-20S65 mm20 mmBasic (no mounting) · S · PT$68.92
MFJ40X75-1075 mm10 mmBasic (no mounting) · - · PT$66.73
MFJ40X75-10S75 mm10 mmBasic (no mounting) · S · PT$68.92
MFJ40X75-2075 mm20 mmBasic (no mounting) · - · PT$66.73
MFJ40X75-20S75 mm20 mmBasic (no mounting) · S · PT$68.92
MFJ40X75-3075 mm30 mmBasic (no mounting) · - · PT$66.73
MFJ40X75-30S75 mm30 mmBasic (no mounting) · S · PT$68.92
MFJ40X75-4075 mm40 mmBasic (no mounting) · - · PT$66.73
MFJ40X75-40S75 mm40 mmBasic (no mounting) · S · PT$68.92
MFJ40X75-5075 mm50 mmBasic (no mounting) · - · PT$66.73
MFJ40X75-50S75 mm50 mmBasic (no mounting) · S · PT$68.92
MFJ40X75-7575 mm75 mmBasic (no mounting) · - · PT$66.73
MFJ40X75-75S75 mm75 mmBasic (no mounting) · S · PT$68.92
MFJ40X80-1080 mm10 mmBasic (no mounting) · - · PT$70.03
MFJ40X80-10S80 mm10 mmBasic (no mounting) · S · PT$72.21
MFJ40X80-2080 mm20 mmBasic (no mounting) · - · PT$70.03
MFJ40X80-20S80 mm20 mmBasic (no mounting) · S · PT$72.21
MFJ40X80-3080 mm30 mmBasic (no mounting) · - · PT$70.03
MFJ40X80-30S80 mm30 mmBasic (no mounting) · S · PT$72.21
MFJ40X80-4080 mm40 mmBasic (no mounting) · - · PT$70.03
MFJ40X80-40S80 mm40 mmBasic (no mounting) · S · PT$72.21
MFJ40X80-5080 mm50 mmBasic (no mounting) · - · PT$70.03
MFJ40X80-50S80 mm50 mmBasic (no mounting) · S · PT$72.21
MFJ40X80-7580 mm75 mmBasic (no mounting) · - · PT$70.03
MFJ40X80-75S80 mm75 mmBasic (no mounting) · S · PT$72.21
MFJ40X80-10080 mm100 mmBasic (no mounting) · - · PT$70.03
MFJ40X80-100S80 mm100 mmBasic (no mounting) · S · PT$72.21
MFJ40X90-30S90 mm30 mmBasic (no mounting) · S · PT$72.21
MFJ40X100-10100 mm10 mmBasic (no mounting) · - · PT$70.03
MFJ40X100-10S100 mm10 mmBasic (no mounting) · S · PT$72.21
MFJ40X100-20100 mm20 mmBasic (no mounting) · - · PT$70.03
MFJ40X100-20S100 mm20 mmBasic (no mounting) · S · PT$72.21
MFJ40X100-30100 mm30 mmBasic (no mounting) · - · PT$70.03
MFJ40X100-30S100 mm30 mmBasic (no mounting) · S · PT$72.21
MFJ40X100-40100 mm40 mmBasic (no mounting) · - · PT$70.03
MFJ40X100-40S100 mm40 mmBasic (no mounting) · S · PT$72.21
MFJ40X100-50100 mm50 mmBasic (no mounting) · - · PT$70.03
MFJ40X100-50S100 mm50 mmBasic (no mounting) · S · PT$72.21
MFJ40X100-75100 mm75 mmBasic (no mounting) · - · PT$70.03
MFJ40X100-75S100 mm75 mmBasic (no mounting) · S · PT$72.21
MFJ40X100-100100 mm100 mmBasic (no mounting) · - · PT$70.03
MFJ40X100-100S100 mm100 mmBasic (no mounting) · S · PT$72.21
MFJ40X125-10125 mm10 mmBasic (no mounting) · - · PT$74.14
MFJ40X125-10S125 mm10 mmBasic (no mounting) · S · PT$76.32
MFJ40X125-20125 mm20 mmBasic (no mounting) · - · PT$74.14
MFJ40X125-20S125 mm20 mmBasic (no mounting) · S · PT$76.32
MFJ40X125-30125 mm30 mmBasic (no mounting) · - · PT$74.14
MFJ40X125-30S125 mm30 mmBasic (no mounting) · S · PT$76.32
MFJ40X125-40125 mm40 mmBasic (no mounting) · - · PT$74.14
MFJ40X125-40S125 mm40 mmBasic (no mounting) · S · PT$76.32
MFJ40X125-50125 mm50 mmBasic (no mounting) · - · PT$74.14
MFJ40X125-50S125 mm50 mmBasic (no mounting) · S · PT$76.32
MFJ40X125-75125 mm75 mmBasic (no mounting) · - · PT$74.14
MFJ40X125-75S125 mm75 mmBasic (no mounting) · S · PT$76.32
MFJ40X125-100125 mm100 mmBasic (no mounting) · - · PT$74.14
MFJ40X125-100S125 mm100 mmBasic (no mounting) · S · PT$76.32
MFJ40X150-10150 mm10 mmBasic (no mounting) · - · PT$78.07
MFJ40X150-10S150 mm10 mmBasic (no mounting) · S · PT$80.25
MFJ40X150-20150 mm20 mmBasic (no mounting) · - · PT$78.07
MFJ40X150-20S150 mm20 mmBasic (no mounting) · S · PT$80.25
MFJ40X150-30150 mm30 mmBasic (no mounting) · - · PT$78.07
MFJ40X150-30S150 mm30 mmBasic (no mounting) · S · PT$80.25
MFJ40X150-40150 mm40 mmBasic (no mounting) · - · PT$78.07
MFJ40X150-40S150 mm40 mmBasic (no mounting) · S · PT$80.25
MFJ40X150-50150 mm50 mmBasic (no mounting) · - · PT$78.07
MFJ40X150-50S150 mm50 mmBasic (no mounting) · S · PT$80.25
MFJ40X150-75150 mm75 mmBasic (no mounting) · - · PT$78.07
MFJ40X150-75S150 mm75 mmBasic (no mounting) · S · PT$80.25
MFJ40X150-100150 mm100 mmBasic (no mounting) · - · PT$78.07
MFJ40X150-100S150 mm100 mmBasic (no mounting) · S · PT$80.25
MFJ40X160-10160 mm10 mmBasic (no mounting) · - · PT$81.99
MFJ40X160-10S160 mm10 mmBasic (no mounting) · S · PT$84.17
MFJ40X160-20160 mm20 mmBasic (no mounting) · - · PT$81.99
MFJ40X160-20S160 mm20 mmBasic (no mounting) · S · PT$84.17
MFJ40X160-30160 mm30 mmBasic (no mounting) · - · PT$81.99
MFJ40X160-30S160 mm30 mmBasic (no mounting) · S · PT$84.17
MFJ40X160-40160 mm40 mmBasic (no mounting) · - · PT$81.99
MFJ40X160-40S160 mm40 mmBasic (no mounting) · S · PT$84.17
MFJ40X160-50160 mm50 mmBasic (no mounting) · - · PT$81.99
MFJ40X160-50S160 mm50 mmBasic (no mounting) · S · PT$84.17
MFJ40X160-75160 mm75 mmBasic (no mounting) · - · PT$81.99
MFJ40X160-75S160 mm75 mmBasic (no mounting) · S · PT$84.17
MFJ40X160-100160 mm100 mmBasic (no mounting) · - · PT$81.99
MFJ40X160-100S160 mm100 mmBasic (no mounting) · S · PT$84.17
MFJ40X175-10175 mm10 mmBasic (no mounting) · - · PT$81.99
MFJ40X175-10S175 mm10 mmBasic (no mounting) · S · PT$84.17
MFJ40X175-20175 mm20 mmBasic (no mounting) · - · PT$81.99
MFJ40X175-20S175 mm20 mmBasic (no mounting) · S · PT$84.17
MFJ40X175-30175 mm30 mmBasic (no mounting) · - · PT$81.99
MFJ40X175-30S175 mm30 mmBasic (no mounting) · S · PT$84.17
MFJ40X175-40175 mm40 mmBasic (no mounting) · - · PT$81.99
MFJ40X175-40S175 mm40 mmBasic (no mounting) · S · PT$84.17
MFJ40X175-50175 mm50 mmBasic (no mounting) · - · PT$81.99
MFJ40X175-50S175 mm50 mmBasic (no mounting) · S · PT$84.17
MFJ40X175-75175 mm75 mmBasic (no mounting) · - · PT$81.99
MFJ40X175-75S175 mm75 mmBasic (no mounting) · S · PT$84.17
MFJ40X175-100175 mm100 mmBasic (no mounting) · - · PT$81.99
MFJ40X175-100S175 mm100 mmBasic (no mounting) · S · PT$84.17
MFJ40X200-10200 mm10 mmBasic (no mounting) · - · PT$86.35
MFJ40X200-10S200 mm10 mmBasic (no mounting) · S · PT$88.53
MFJ40X200-20200 mm20 mmBasic (no mounting) · - · PT$86.35
MFJ40X200-20S200 mm20 mmBasic (no mounting) · S · PT$88.53
MFJ40X200-30200 mm30 mmBasic (no mounting) · - · PT$86.35
MFJ40X200-30S200 mm30 mmBasic (no mounting) · S · PT$88.53
MFJ40X200-40200 mm40 mmBasic (no mounting) · - · PT$86.35
MFJ40X200-40S200 mm40 mmBasic (no mounting) · S · PT$88.53
MFJ40X200-50200 mm50 mmBasic (no mounting) · - · PT$86.35
MFJ40X200-50S200 mm50 mmBasic (no mounting) · S · PT$88.53
MFJ40X200-75200 mm75 mmBasic (no mounting) · - · PT$86.35
MFJ40X200-75S200 mm75 mmBasic (no mounting) · S · PT$88.53
MFJ40X200-100200 mm100 mmBasic (no mounting) · - · PT$86.35
MFJ40X200-100S200 mm100 mmBasic (no mounting) · S · PT$88.53
MFJ40X225-10225 mm10 mmBasic (no mounting) · - · PT$89.83
MFJ40X225-10S225 mm10 mmBasic (no mounting) · S · PT$92.02
MFJ40X225-20225 mm20 mmBasic (no mounting) · - · PT$89.83
MFJ40X225-20S225 mm20 mmBasic (no mounting) · S · PT$92.02
MFJ40X225-30225 mm30 mmBasic (no mounting) · - · PT$89.83
MFJ40X225-30S225 mm30 mmBasic (no mounting) · S · PT$92.02
MFJ40X225-40225 mm40 mmBasic (no mounting) · - · PT$89.83
MFJ40X225-40S225 mm40 mmBasic (no mounting) · S · PT$92.02
MFJ40X225-50225 mm50 mmBasic (no mounting) · - · PT$89.83
MFJ40X225-50S225 mm50 mmBasic (no mounting) · S · PT$92.02
MFJ40X225-75225 mm75 mmBasic (no mounting) · - · PT$89.83
MFJ40X225-75S225 mm75 mmBasic (no mounting) · S · PT$92.02
MFJ40X225-100225 mm100 mmBasic (no mounting) · - · PT$89.83
MFJ40X225-100S225 mm100 mmBasic (no mounting) · S · PT$92.02
MFJ40X250-10250 mm10 mmBasic (no mounting) · - · PT$94.19
MFJ40X250-10S250 mm10 mmBasic (no mounting) · S · PT$96.37
MFJ40X250-20250 mm20 mmBasic (no mounting) · - · PT$94.19
MFJ40X250-20S250 mm20 mmBasic (no mounting) · S · PT$96.37
MFJ40X250-30250 mm30 mmBasic (no mounting) · - · PT$94.19
MFJ40X250-30S250 mm30 mmBasic (no mounting) · S · PT$96.37
MFJ40X250-40250 mm40 mmBasic (no mounting) · - · PT$94.19
MFJ40X250-40S250 mm40 mmBasic (no mounting) · S · PT$96.37
MFJ40X250-50250 mm50 mmBasic (no mounting) · - · PT$94.19
MFJ40X250-50S250 mm50 mmBasic (no mounting) · S · PT$96.37
MFJ40X250-75250 mm75 mmBasic (no mounting) · - · PT$94.19
MFJ40X250-75S250 mm75 mmBasic (no mounting) · S · PT$96.37
MFJ40X250-100250 mm100 mmBasic (no mounting) · - · PT$94.19
MFJ40X250-100S250 mm100 mmBasic (no mounting) · S · PT$96.37
MFJ40X300-10300 mm10 mmBasic (no mounting) · - · PT$102.47
MFJ40X300-10S300 mm10 mmBasic (no mounting) · S · PT$104.65
MFJ40X300-20300 mm20 mmBasic (no mounting) · - · PT$102.47
MFJ40X300-20S300 mm20 mmBasic (no mounting) · S · PT$104.65
MFJ40X300-30300 mm30 mmBasic (no mounting) · - · PT$102.47
MFJ40X300-30S300 mm30 mmBasic (no mounting) · S · PT$104.65
MFJ40X300-40300 mm40 mmBasic (no mounting) · - · PT$102.47
MFJ40X300-40S300 mm40 mmBasic (no mounting) · S · PT$104.65
MFJ40X300-50300 mm50 mmBasic (no mounting) · - · PT$102.47
MFJ40X300-50S300 mm50 mmBasic (no mounting) · S · PT$104.65
MFJ40X300-75300 mm75 mmBasic (no mounting) · - · PT$102.47
MFJ40X300-75S300 mm75 mmBasic (no mounting) · S · PT$104.65
MFJ40X300-100300 mm100 mmBasic (no mounting) · - · PT$102.47
MFJ40X300-100S300 mm100 mmBasic (no mounting) · S · PT$104.65
MFJ40X350-50S350 mm50 mmBasic (no mounting) · S · PT$112.93
MFJ40X350-100S350 mm100 mmBasic (no mounting) · S · PT$112.93

Need a combination that is not listed? Request a quote.

Where the MFJ40 Is Used

General automation

About 528 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 MFJ40 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 the stroke adjustment (10-100 mm): pick the amount by which you need to trim the stroke on the machine. The cylinder can be set anywhere between full stroke and full stroke minus that amount.

Then choose the mounting. Basic (no code) uses the cylinder's own mounting holes. This bore is stocked with FA front flange, TC center trunnion. Foot and flange mountings hold the cylinder rigid for straight-line loads; clevis and trunnion mountings let it pivot when the load moves in an arc.

Finally pick the version: S adds a magnet for position sensors.

AirTAC MFJ40 FAQ

No. Every MFJ40 gives about 528 N in both directions at 0.5 MPa, whatever the stroke.

The number after the dash is the adjustable range in mm. An MFJ40X100-50, for example, can be set to any stroke between 50 and 100 mm.

1/4" ports, PT thread as standard.

Brackets: FA front flange, 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 MFJ40. Orders are processed and handed to the carrier within 3-5 business days.

Buying the MFJ40 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 2026-11-03.

Request a Quote for the MFJ40

Send the order code, quantity and destination. We confirm price, stock and lead time, usually within 7-8 hours.

Thank you. We received your request for MFJ40X175-10 and will confirm price, stock and lead time — usually within 7-8 hours.

For the fastest response, keep the complete model number above and include a clear photo of the product label. If photo upload is unavailable, email photos to [email protected] with your model number.