Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X125-75S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X125-75S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø20mm bore and 125mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ20 mm
- Stroke125 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 MAJ20X125-75S
A 125 mm stroke you can dial in: MAJ20X125-75S carries a 75 mm trimming window, so one cylinder covers several end positions without changing hardware. Double acting throughout, it pushes 157 N and pulls 131.9 N at 0.5 MPa, reaching 219.8 N at 0.7 MPa, with a theoretical ceiling of 32 kgf.
Its riveted stainless round body pairs with a hard-chrome carbon-steel rod to resist washdown and outdoor damp better than painted aluminium minis. Halving the 0.5 MPa push for margin, it lifts about 8 kg vertically - enough for small trays or gripper tooling. Fixed bumper pads soften both stroke ends, and the standard magnet accepts CMSG / DMSG / EMSG switches.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X125-75S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X125-75S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 125 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 MAJ20X125-75S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×125 | 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 MAJ20X125-75S Is Used
Test-rig fixture clamp
Hold samples in a materials or leak-test rig; tune the clamp face position through the 75 mm window to suit different part heights without re-fixturing.
Gripper actuation
Drive a two-jaw gripper on a benchtop pick-and-place gantry; the standard magnet lets DMSG switches signal open and closed jaws directly.
Fill-nozzle descent
Lower a filling or dosing nozzle to a consistent standoff above bottles or vials by setting the stop screw rather than swapping spacers.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X125-75S the Right Cylinder?
Sizing check: one step down, bore 16 yields 100.5 N at 0.5 MPa; one step up, bore 25 offers 245.3 N. Choose this model when your job sits near the 94 N practical level the 20 mm bore supports. The adjuster shortens the extend stroke only - for holding a load with air lost, fit an external stop or a locking circuit. Bolt it by FA flange or LB foot, add an I or Y knuckle at the rod, and wire CMSG / DMSG / EMSG switches onto the standard magnet. Port is 1/8", rod thread M8x1.25.
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 MAJ20X125-75S FAQ
Push is 157 N and pull 131.9 N at 0.5 MPa. Raise supply to 0.7 MPa and push reaches 219.8 N, pull 184.7 N. At the 1.0 MPa theoretical limit the bore delivers up to 32 kgf. Proof pressure is 1.5 MPa (215 psi).
No. Every MA-series cylinder, including MAJ20X125-75S, ships with the piston magnet already installed, so CMSG, DMSG or EMSG reed switches mount on the barrel for end-of-stroke or trimmed-position signals without any special-order build.
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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