Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X125-30S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X125-30S 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 MAJ20X125-30S
Order the 30 mm window when one cylinder must serve several product heights: a technician shortens the extend stroke anywhere in that band (95-125 mm effective) with a screwdriver, no cylinder swap needed. Double acting on a 20 mm bore, the MAJ20X125-30S pushes 157 N and pulls 131.9 N at 0.5 MPa while cycling 30-800 mm/s on 0.15-1.0 MPa (22-145 psi) air. The piston magnet comes standard, ready for CMSG, DMSG and EMSG switches.
Build quality targets the wet corners of a plant: the stainless round barrel is riveted to aluminium covers with a stainless block, and the 20 um hard-chrome rod shrugs off condensation and mild washdown. Fixed bumper pads damp both stroke ends - deceleration only, since true adjustable cushioning lives in the MACJ family. Translate the rating for the shop floor: about 8 kg of vertical lift at a 2:1 margin, or 94 N of dependable working force at 0.5 MPa.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X125-30S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X125-30S |
|---|---|
| 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 MAJ20X125-30S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -30 | 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 MAJ20X125-30S Is Used
Multi-SKU tray loading
One stroke setting per tray size on a blister or tray loader; the 30 mm window switches between formats without re-plumbing.
Small press assist
Tapping or staking pins in bracket assemblies where 219.8 N at 0.7 MPa is enough and depth must be re-set per part.
Machine setup stops
Adjustable end stops on a fixture base that operators re-gauge between changeovers, position-checked via the built-in magnet.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X125-30S the Right Cylinder?
A 30 mm band suits mixed-SKU tooling; if format changes exceed it, order a wider window or a second unit. Lighter clamps can drop to bore 16 (100.5 N at 0.5 MPa), heavier ejection should step up to bore 25 (245.3 N). Mount with FA flange, LB foot, or I and Y knuckles on the rod. Two cautions for this 125 mm travel: guide the load externally so side forces never reach the 8 mm rod, and remember the stop screw only sets end of extend - an unpowered rod can still creep.
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 MAJ20X125-30S FAQ
Push 157 N and pull 131.9 N at 0.5 MPa. At 0.7 MPa the figures rise to 219.8 N push and 184.7 N pull, and the theoretical maximum is 32 kgf at 1.0 MPa. Keep real duty near 94 N at 0.5 MPa.
Only the trim band: this version adjusts the extend stroke across 30 mm instead of 20 mm, covering formats from 95 mm to the full 125 mm. Everything else matches - stainless barrel, hard-chrome rod, fixed anti-impact bumpers, standard magnet for CMSG/DMSG/EMSG switches and 1/8" PT ports.
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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