Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X60-40S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X60-40S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø20mm bore and 60mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ20 mm
- Stroke60 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM8×1.25
- CushionFixed anti-impact 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 MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X60-40S
Stroke trim of up to 40 mm makes this the most flexible of the 60 mm bore 20 options: back the external screw out for full travel, or wind it in to cut extension right on the machine. Force at 0.5 MPa is 157 N out and 131.9 N back. AirTAC rolls the stainless barrel onto aluminium end covers, giving a slim round body that tucks into tight machine frames, with a hard-chrome rod plated to 20 um.
The fixed anti-impact pads only decelerate the piston; adjustable air cushioning is a MACJ feature, not here. For sizing, count on close to 94 N of real push at 0.5 MPa and remember the rod can raise about 8 kg against gravity once a 2:1 margin is kept. Sensing needs no options: the magnet comes fitted and works with CMSG, DMSG and EMSG switches.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X60-40S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X60-40S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 60 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 anti-impact bumper pads |
| Max standard stroke | Up to 300 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X60-40S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×60 | 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 MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X60-40S Is Used
Ejector pin on a small injection die
157 N at 0.5 MPa clears slim parts from the cavity, and the 40 mm window lets toolmakers set ejection travel without spacer swaps.
Case flag trigger on a carton sealer
The standard magnet plus a DMSG switch signals full extension before the flap folder cycles; the trim screw removes overrun.
Battery lock pin on AGV charging docks
The stainless barrel survives dock-side humidity, and the hard-chromed 8 mm rod resists scuffing through repeated engage cycles.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X60-40S the Right Cylinder?
Compare forces before you commit: bore 16 offers 100.5 N at 0.5 MPa, this bore 20 delivers 157 N, and bore 25 reaches 245.3 N. The 40 mm adjuster is purely a shortened extend stop; on sudden air loss the rod moves freely, so add an external brake if the load must stay put. Flange (FA) and foot (LB) mounts, plus I or Y rod knuckles, bolt straight to the rolled body. The 1/8" port and the 60 mm stroke, well under the 300 mm standard cap, keep plumbing simple.
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 Bumper models: keep speed within the rated range.
- check Installation by qualified personnel per AirTAC docs.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X60-40S FAQ
This model delivers 157.0 N push and 131.9 N pull at 0.5 MPa, 219.8 N push and 184.7 N pull at 0.7 MPa, and a theoretical 32.0 kgf maximum at 1.0 MPa. It runs on 0.15-1.0 MPa (22-145 psi), survives 1.5 MPa (215 psi) proof, moves at 30-800 mm/s, and takes air filtered to 40 um between -20 and +70 C.
No. They are fixed anti-impact bumpers that soften the piston landing only; adjustable air cushioning belongs to the MACJ family. What the MA does give you is a corrosion-resistant stainless barrel with a 20 um hard-chrome rod, a combination that outlasts painted minis near coolant mist or outdoor moisture.
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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.
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Most inquiries answered within 7-8 hours.
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