Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X150-50S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X150-50S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø20mm bore and 150mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ20 mm
- Stroke150 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 MAJ20X150-50S
With a 50 mm stop-screw band, the MAJ20X150-50S lets one cylinder serve several product sizes on the same station: extend travel starts at 150 mm and can be shortened anywhere inside that 50 mm window with a hex key. Output is classic bore-20 territory - 157 N push and 132 N pull at 0.5 MPa, climbing to 220 N push at 0.7 MPa.
Construction is where this mini earns its keep in wet or dusty plants: a stainless-steel round barrel rolled onto aluminium covers, a hard-chrome plated 8 mm rod, and fixed bumper pads that take the sting out of stroke ends. Position switches need no options either - the magnet comes standard, ready for CMSG, DMSG or EMSG sensors. For lift checks, 157 N at 0.5 MPa is about 16 kgf; halve it for margin and the rod still raises roughly 8 kg vertically.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X150-50S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X150-50S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 150 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 MAJ20X150-50S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×150 | Stroke length in mm. |
| -50 | 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 MAJ20X150-50S Is Used
Carton flap tuck station
Tuck and hold minor flaps on small e-commerce cartons; trim the 150 mm stroke within 50 mm to match shallow or deep cartons on the same machine.
Pick-and-place drop height
Set the descent of a light suction picker over tote bins; roughly 8 kg of vertical capability at 0.5 MPa covers empty and half-full totes with margin.
Stopper height on an assembly line
Raise pallet-stop blades for different fixture heights; the external stop screw sets the up-position precisely without shimming.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X150-50S the Right Cylinder?
Sizing cross-check: if 157 N at 0.5 MPa feels tight, the 25 mm bore doubles the margin at 245 N; if your load sits under 100 N, the 16 mm bore does the job cheaper. Remember the stop screw only shortens the extend stroke - it is an end stop, not a holding brake, so the rod can sag if supply air fails mid-cycle. Mount with the FA flange or LB foot and pick I or Y knuckles for pivoting links; at this 150 mm stroke, guide any side load in slides rather than on the rod itself. CMSG or DMSG switches drop on the barrel straight from the box.
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 MAJ20X150-50S FAQ
Push 157 N and pull 132 N at 0.5 MPa; 220 N push and 185 N pull at 0.7 MPa; roughly 32 kgf maximum theoretical force at 1.0 MPa. The extend stroke is 150 mm, adjustable down through a 50 mm window, with an 8 mm hard-chrome rod and 1/8" air ports.
No. The MAJ uses fixed anti-impact bumper pads that only soften the last part of travel; they decelerate the piston but cannot be tuned like an air cushion. If your cycle needs adjustable cushioning, compare the MACJ family, which adds cushions to the same adjustable-stroke idea.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
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