Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X65-30S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X65-30S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø20mm bore and 65mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ20 mm
- Stroke65 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 MAJ20X65-30S
For jobs that need mid-range adjustment, the MAJ20X65-30S covers a 30 mm slice of its 65 mm extend stroke through an external stop screw - ideal when product sizes change between runs. It is double-acting on 0.15-1.0 MPa (22-145 psi) air, sweeps 30-800 mm/s, and its round body is rolled tight around a stainless barrel.
Force class: 157 N push at 0.5 MPa from the 20 mm bore, which translates to roughly 94 N of honest working load or about 8 kg lifted vertically with a 2:1 safety margin. Fixed anti-impact pads ease the rod into each end of travel - deceleration only, unlike the adjustable air cushion of the MAC family - and the hard-chrome 8 mm rod resists scoring in dusty workshops.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X65-30S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X65-30S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 65 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 MAJ20X65-30S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×65 | 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 MAJ20X65-30S Is Used
Carton flap tucker
Folds small box flaps on a case packer; changing carton heights is handled by screwing the stop in or out within the 30 mm window.
Pallet strapper positioning
Positions strapping heads on semi-auto strappers where washdown detergents would eat a painted-steel mini cylinder.
Sorting diverter on packing lines
Deflects small blister packs between chutes, with an EMSG switch confirming the trimmed extend position every cycle.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ20X65-30S the Right Cylinder?
Compare against the 16 mm bore at 100.5 N push (0.5 MPa) for lighter duty or the 25 mm bore at 245.3 N for heavier clamps. This bore takes 1/8" ports and an M8x1.25 male rod thread; FA flange, LB foot and I / Y knuckle options round out the mounting picture.
If your process must not lose position, treat the trim screw as a travel limit only - with air removed the piston is free to drift, so a separate mechanical clamp is the right answer for load holding.
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 MAJ20X65-30S FAQ
Yes: push 157 N and pull 132 N at 0.5 MPa; push 220 N and pull 185 N at 0.7 MPa; 32 kgf theoretical maximum at 1.0 MPa. It runs 0.15-1.0 MPa (22-145 psi), tolerates 1.5 MPa (215 psi) proof, works from -20 to +70 C and moves at 30-800 mm/s.
There are no tie rods - the aluminium covers and stainless block are rolled onto the high-precision stainless tube, giving a slim round body that fits tight machine layouts. The two-way heterogeneous piston seal also stores grease, so lubrication intervals stretch out.
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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