Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X70-10S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X70-10S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø40mm bore and 70mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service. A variable air cushion at both ends lets you tune end-of-stroke deceleration on site.
- BoreØ40 mm
- Stroke70 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM12×1.25
- CushionVariable air cushion, both ends
- 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 MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X70-10S
Trim the extend stroke by up to 10 mm on site and you still keep full force: this MACJ40X70-10S runs double-acting in a 40 mm bore, pushing 628.3 N and pulling 527.8 N at 0.5 MPa (879.6 N at 0.7 MPa, 128.1 kgf theoretical peak at 1.0 MPa). A stop screw shortens the stroke within the ordered window; a variable air cushion at each end soaks up the residual shock, so you can run 30-800 mm/s without hammering the covers.
The body is a rolled, riveted stainless-steel barrel with a hard-chrome plated 16 mm rod - it shrugs off the mist and washdown that swell painted minis, working from 0.15-1.0 MPa (22-145 psi) on air filtered to 40 um. For real work budget roughly 377 N (60 percent of the 0.5 MPa push); that is a firm clamp on die-cast fittings or, run vertically, a 32 kg part lifted with a 2:1 margin. The magnet is built in as standard, so CMSG / DMSG / EMSG switches drop on for end-of-stroke sensing.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X70-10S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X70-10S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 70 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M12×1.25 |
| 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 | Variable air cushion, both ends |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MA-series datasheet. Barrel: stainless-steel tube (round-body, riveted rolling-packed construction); piston rod: carbon steel with 20µm hard-chrome plating; covers: aluminium alloy. Thread options: PT (blank) / G / NPT. Every MA-series cylinder ships with a built-in magnet for CMSG / DMSG / EMSG position sensors.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X70-10S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×70 | Stroke length in mm. |
| -10 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| -S | Built-in magnet for CMSG / DMSG / EMSG sensors (standard on MA series). |
| CA / U / CM | Back-cover type: CA pivot, U flat-end, CM round-end. |
MA-family variants: MA / MAC (double acting ±cushion), MSA / MTA (single acting push / pull), MAD / MACD (double rod ±cushion), MAJ / MACJ (adjustable stroke ±cushion), MAR (cushioned with integrated F/U mount). Mounting accessories: FA flange, LB foot, SDB pivot; plus I and Y knuckles. Thread PT (blank) / G / NPT.
Where the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X70-10S Is Used
Conveyor stopper gate
Raising a stop blade between carton lanes: 628 N at 0.5 MPa holds the line against product back-pressure, and the 10 mm stroke trim matches blade height to the rail without shimming.
Terminal crimp press
A light bench crimp for wire terminals: 377 N of working force seats small lugs cleanly, while the end cushion keeps the ram from ringing at bottom of stroke.
Filling head lid clamp
Clamping caps or lids during a fill cycle on bottling equipment; the stainless barrel tolerates daily rinse-down and the magnet feeds a DMSG switch to confirm clamp-on.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X70-10S the Right Cylinder?
Sizing check: the 25 mm MACJ gives 245.3 N at 0.5 MPa and the 50 mm gives 981.3 N, so pick down for light gates and up for heavy clamps - the 40 mm covers the middle ground. The 10 mm adjuster works as an extend-side stop, not a position holder, so the rod can still settle back if the supply drops. Fit an FA flange or LB foot, add an I or Y knuckle where the load pivots, and thread your tooling onto the M12x1.25 rod end; 1/8 inch ports feed the air.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) is standard for sensors
- ✓ Back cover (CA/U/CM) & mount (FA/LB/SDB)
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 On first run, back off the cushion screws and release gradually.
- check Installation by qualified personnel per AirTAC docs.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X70-10S FAQ
At 0.5 MPa it pushes 628.3 N and pulls 527.8 N; at 0.7 MPa those rise to 879.6 N and 738.9 N, with a 128.1 kgf theoretical maximum at 1.0 MPa. Double-acting throughout, with the extend stroke trimmable by up to 10 mm and a variable cushion at each end.
No. Every MACJ ships with the magnet already built into the piston, so CMSG, DMSG and EMSG switches mount straight onto the barrel. The stainless barrel and hard-chrome rod also make the cylinder a good pick where washdown or condensation would corrode a painted mini.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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