Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X100-40S
The AirTAC Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X100-40S is a genuine double acting, adjustable stroke + cushion standard round-body mini air cylinder with a Ø40mm bore and 100mm 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
- Stroke100 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 MACJ40X100-40S
Filling the gap between fixed-stroke MAC cylinders and full servo axes, this 40 mm MACJ trades a 40 mm field-adjustable extend window at a standard-cylinder price. It is double-acting with a variable air cushion at both ends, built on a stainless round barrel whose covers are rolled into place for a sealed, compact body. The 628 N push at 0.5 MPa sits squarely in mid-range mini territory - 1.6 times the 402 N of a 32 mm bore - and translates to about 64 kgf of vertical lift, or roughly 32 kg with a sensible 2:1 margin.
The hard-chrome plated rod shrugs off the splashes and condensation found around packaging and food equipment. Every unit carries its magnet as standard, so CMSG, DMSG or EMSG switches signal position out of the box. Supply 0.15-1.0 MPa (22-145 psi), run 30-800 mm/s, and let the end cushions handle deceleration when you push the speed up.
Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X100-40S Technical Specifications
| Model | Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X100-40S |
|---|---|
| Series | MACJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 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 MACJ40X100-40S
| MACJ | Standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×100 | Stroke length in mm. |
| -40 | 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 MACJ40X100-40S Is Used
Carton flap folding head
Folds top flaps on a secondary carton packer; the 40 mm trim absorbs flap-thickness changes and the cushion keeps the head from slamming at 500 mm/s.
Lab vial capping press
Presses caps onto 30 ml laboratory vials; 377 N of usable push at 0.5 MPa caps consistently without cracking glass, and the stainless body wipes clean.
Solar laminate edge hold-down
Holds module edges during lamination on a solar panel line; the chrome-plated 16 mm rod resists the encapsulant vapours that corrode bare steel rods.
Is the Airtac MACJ Stainless Steel Mini Adjustable Cylinder MACJ40X100-40S the Right Cylinder?
If your load needs under 400 N at 0.5 MPa, the 32 mm bore saves space and air; above about 600 N working load, jump to the 50 mm bore and its 981 N push. The 40 mm window trims the extend stroke downward only, and remember the stop is not a mid-stroke lock - on air loss the rod simply drifts, so external support is needed wherever position must persist. FA flange or LB foot mounting suits fixed frames; the standard magnet pairs with CMSG / DMSG / ESG switches (CMSG, DMSG, EMSG) for sensing across the 100 mm travel.
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 MACJ40X100-40S FAQ
At 0.5 MPa: 628 N push and 528 N pull. At 0.7 MPa: 880 N push and 739 N pull. Theoretical maximum force is 128 kgf at 1.0 MPa. Bore is 40 mm, rod 16 mm, stroke 100 mm with a 40 mm adjustable extend window.
All 40 mm MACJ cylinders use 1/8 inch ports (PT thread standard, G or NPT on request) and the rod carries an M12x1.25 external male thread. Mount with the FA flange or LB foot, add I or Y knuckles where the load pivots, and the built-in standard magnet works with CMSG, DMSG and EMSG switches.
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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