Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X75-75S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X75-75S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø20mm bore and 75mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ20 mm
- Stroke75 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 MAJ20X75-75S
With a 75 mm adjustable window covering the whole ordered stroke, the MAJ20X75-75S lets maintenance teams dial in any extend length up to 75 mm right at the machine. The actuator is double-acting and rolls a stainless barrel into the aluminium covers, a riveted joint that keeps the compact round body reliably sealed.
Air at 0.5 MPa produces 157 N on the extend side, rising to 219.8 N at 0.7 MPa with a theoretical ceiling of 32 kgf at 1.0 MPa. For a pick-up job that translates into about 8 kg lifted vertically once the rating is halved for margin. Fixed anti-impact bumpers soften both stroke ends; they decelerate only and are not a metered air cushion, and the standard magnet accepts CMSG / DMSG / EMSG switches.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X75-75S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X75-75S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 75 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 MAJ20X75-75S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×75 | Stroke length in mm. |
| -75 | 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 MAJ20X75-75S Is Used
Chute gate diverter
Every millimetre up to 75 mm is adjustable, so gate throw on conveyor diverters can be tuned for mixed box widths.
Switch-checked ejector
The standard magnet and a CMSG switch confirm ejector retraction on a small parts line before the next cycle starts.
Pallet shim setter
With a 2:1 margin the bore 20 rating equates to about 8 kg of vertical lift, enough to position locator shims under pallets in semi-automatic stackers.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X75-75S the Right Cylinder?
Compare neighbouring bores before ordering: 16 mm gives 100.5 N push at 0.5 MPa, 25 mm gives 245.3 N, and this 20 mm bore gives 157 N - the mid option for clamp arms and small lifters. Mount via FA flange or LB foot; note that the stop screw sets position but cannot retain a suspended load if air is lost. Where sensing matters, the standard magnet plus CMSG, DMSG or EMSG switches removes any special-order step.
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 MAJ20X75-75S FAQ
Rated outputs: 157 N push and 131.9 N pull at 0.5 MPa; 219.8 N push and 184.7 N pull at 0.7 MPa; theoretical peak 32 kgf at 1.0 MPa. Operating range is 0.15-1.0 MPa (22-145 psi) and speed spans 30-800 mm/s.
No. The fixed bumper pads only soften the impact at each stroke end; they cannot be metered like the air cushion on the MACJ family. If regulated end-of-stroke deceleration is needed, step up to the MACJ adjustable-cushion version.
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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