Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X125-10S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X125-10S 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 MAJ20X125-10S
Fine positioning is the whole point of the AirTAC MAJ20X125-10S, whose stop screw trims the extend stroke within a tight 10 mm window. Behind the adjuster sits a proven round-body mini: a stainless barrel, hard-chrome plated 8 mm rod and riveted aluminium covers, double-acting on 0.15-1.0 MPa (22-145 psi) air at 30-800 mm/s.
Push and pull at 0.5 MPa measure 157 N and 132 N; at 0.7 MPa they rise to 220 N and 185 N, with 32 kgf the theoretical maximum for the bore. Budget roughly 94 N for real work at 0.5 MPa and the cylinder will run cool for millions of cycles. A 10 mm window suits machines where a few millimetres of part variation decide quality - a lid press, a stamp depth, a sensor gap.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X125-10S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X125-10S |
|---|---|
| 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 MAJ20X125-10S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -10 | 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 MAJ20X125-10S Is Used
Cosmetic jar lid press
Pressing caps onto cosmetic jars needs repeatability, not raw power: about 94 N of usable force at 0.5 MPa seats lids while the 10 mm window absorbs jar-height tolerance.
Label sensor gap set
On a label applicator, the stop screw sets the exact sensor-to-web gap within 10 mm, and the built-in magnet with a CMSG switch confirms each cycle end.
Vial stopper pre-set
A pharma vial line uses the trimmed stroke as a pre-set tamping depth; the stainless barrel and chrome rod handle repeated IPA wipe-downs on the filling station.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X125-10S the Right Cylinder?
Between the 16 mm bore (100 N push at 0.5 MPa) and the 25 mm bore (245 N), this 20 mm cylinder lands in the sweet spot for small precision clamps and presses. Its adjuster shortens extend travel only and cannot act as a mid-stroke brake - on air loss the rod coasts freely, so support any hanging load separately. Choose the FA flange for face mounting, the LB foot for base mounting, or an I / Y rod knuckle for a pivoting link; the 1/8" port and M8x1.25 male rod thread match common fittings. At 125 mm stroke, guide the load externally if any side force is present.
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 MAJ20X125-10S FAQ
At 0.5 MPa the 20 mm bore pushes 157 N and pulls 132 N; at 0.7 MPa it delivers 220 N push and 185 N pull, and the theoretical maximum is 32 kgf at 1.0 MPa. Run it on 0.15-1.0 MPa (22-145 psi) air at 30-800 mm/s, and size the actual job for about 94 N so the cylinder keeps a healthy reserve.
Mounting options are the FA flange, the LB foot and the I or Y rod knuckles; the adjustable-stroke version has no SDB or back-cover mount code. Air enters through a 1/8" port and the 8 mm rod carries an M8x1.25 male thread. The fixed anti-impact pads reduce end-of-stroke shock but are not adjustable cushions - order the MACJ family when tunable air cushioning is required.
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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