Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X500-40S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X500-40S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø40mm bore and 500mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ40 mm
- Stroke500 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM12×1.25
- 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 MAJ40X500-40S
A 40 mm trim window on the extend stop gives the MAJ40X500-40S generous on-site play across its 500 mm travel. Push force at 0.5 MPa is 628 N with 528 N on the return stroke; treat about 377 N as the honest working budget and the rod will not labour at its limit. Supply pressure spans 0.15-1.0 MPa (22-145 psi), proof rated 1.5 MPa (215 psi), with rod speed of 30-800 mm/s.
Riveted aluminium caps roll onto the stainless tube for a slim round profile that slots into legacy machine frames, and FA flange or LB foot brackets bolt up without adapters. A magnet comes standard in the piston, so a CMSG, DMSG or EMSG switch reports the trimmed end position from the moment the cylinder arrives on site.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X500-40S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X500-40S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 500 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M12×1.25 |
| 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 500 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 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 MAJ40X500-40S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×500 | Stroke length in mm. |
| -40 | 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 MAJ40X500-40S Is Used
Textile batching arm
Swings a thread-guide arm across a 500 mm weaving width; the 40 mm trim absorbs frame tolerance on rebuilt looms without re-machining brackets.
Scrap chute diverter
Flips a sheet-metal diverter on a punch-press scrap chute, where 628 N of push overcomes sticking blanks and the working margin keeps the action repeatable.
Pilot-plant rinse slide
Positions a rinse manifold in a food-test pilot plant; the stainless tube and chrome rod stand up to daily caustic spray with no paint to chip or flake.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X500-40S the Right Cylinder?
This is the strongest bore in the MA line - one size down, the MAJ32, manages 402 N push at 0.5 MPa, while nothing larger exists in the family, so heavier work belongs to the MAC series. With 500 mm of unsupported travel, keep side loads off the 16 mm rod by carrying the part in its own slides or bearings. The adjuster is an extend-end stop, not a mid-stroke brake, and a failing air line still lets the piston coast, so add a locking device where dwell matters. Pick FA or LB mounting to suit the frame and an I or Y knuckle if the push needs to swing.
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 MAJ40X500-40S FAQ
The datasheet lists 628 N push and 528 N pull at 0.5 MPa, 880 N push at 0.7 MPa, and a 128 kgf theoretical maximum at 1.0 MPa. Running pressure is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), and rod speed runs from 30 to 800 mm/s.
The MAJ is AirTAC's own riveted round-body mini: a stainless-steel barrel with a hard-chrome plated rod and aluminium covers rolled on for a sealed, slim package. That compact round footprint is exactly why it drops into older machine frames where wider extruded bodies will not fit.
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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