Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X450-30S
The AirTAC Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X450-30S is a genuine double acting, adjustable stroke standard round-body mini air cylinder with a Ø40mm bore and 450mm stroke, 1/8" air ports and a stainless-steel barrel with a hard-chrome-plated rod for reliable, mildly corrosion-resistant service.
- BoreØ40 mm
- Stroke450 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 MAJ40X450-30S
A 450 mm reach with 30 mm of on-site trim makes the MAJ40X450-30S a fit for long-index machines whose extend stroke needs fine-tuning after installation. The 40 mm bore delivers 628.3 N push and 527.8 N pull at 0.5 MPa (879.6 N push at 0.7 MPa), with 1/8" ports and a 16 mm rod threaded M12x1.25. Instead of bolted flange plates, the aluminium covers and stainless block are rolled onto the stainless barrel, giving a slim round body that resists corrosion in wet or outdoor settings.
For vertical work, 628.3 N at 0.5 MPa equates to about 64 kgf - halve that for a 2:1 margin and the cylinder lifts roughly 32 kg against gravity. Fixed bumper pads cushion both stroke ends by decelerating only, the built-in magnet suits CMSG / DMSG / EMSG switches, and the trim screw shortens extension anywhere within the 30 mm window.
Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X450-30S Technical Specifications
| Model | Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X450-30S |
|---|---|
| Series | MAJ mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 450 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 MAJ40X450-30S
| MAJ | Standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×450 | 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 MAJ40X450-30S Is Used
Transfer beam actuator
Swinging a 4 m index beam on an assembly conveyor, with the 30 mm trim absorbing mounting tolerance between stations.
Sample elevator in a lab washer
Lifting about 32 kg of test baskets vertically into a wash chamber, where the stainless barrel tolerates humid, corrosive vapor.
Case pusher on a cartoner
Kicking 12-pack cartons off a chain at up to 800 mm/s using 628.3 N of push at 0.5 MPa, with bumper-decelerated stops protecting the board.
Is the Airtac MAJ Double Rod Adjustable Stainless Steel Mini Cylinder MAJ40X450-30S the Right Cylinder?
Sizing check: the MAJ25 offers 245.3 N push at 0.5 MPa if the load is lighter, while this 40 mm bore more than doubles that at 628.3 N; when the cycle also needs controlled deceleration plus adjustment, compare the cushioned MACJ variant. The stop screw is an extend-side end stop rather than a lock - expect rod drift if air is lost, so do not count on it to hold a mid-stroke position. Fit the FA flange for face mounting or the LB foot for base mounting; I and Y knuckles thread onto the M12x1.25 rod. Over 450 mm of travel, even small side loads bend the 16 mm rod, so guide external slides and align the load axis before wiring the switch.
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 MAJ40X450-30S FAQ
Push is 628.3 N and pull 527.8 N at 0.5 MPa; at 0.7 MPa expect 879.6 N push and 738.9 N pull. Theoretical peak at 1.0 MPa is 128.1 kgf. Operating range 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-800 mm/s.
Two catalogue options: the FA flange bolts the front cover face-on for aligned thrust, and the LB foot bolts under the barrel for parallel installs. Rod ends take I or Y knuckles on the M12x1.25 thread. The adjustable version has no SDB or back-cover mounting code.
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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