Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X450-40
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X450-40 is a genuine double-acting aluminum-barrel mini cylinder with a Ø40mm bore, a 450mm nominal stroke and a rear adjustable-stroke stopper — trim up to 40mm for a usable window of 410–450mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke450 mm
- Adjustable410–450 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable air cushion (both ends)
- 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 MBLCJ Adjustable Mini Cylinder MBLCJ40X450-40
The AirTAC MBLCJ40X450-40 is a compact double-acting aluminum mini cylinder featuring a rear travel stopper and tunable end-of-stroke deceleration. The 40mm bore delivers 628 N of push force at 0.5 MPa, while the 450mm stroke handles long-reach positioning. A 40mm rear adjuster trims the usable travel window down to 410mm, letting you dial in the exact end position without machining spacers.
Screw-tunable air cushions at both ends absorb kinetic energy from heavy fast moves, protecting the end covers better than a fixed rubber bumper. Note this SKU lacks a built-in magnet, so it cannot support CMSG, DMSG, or EMSG position sensors. The Ø16mm hard-chrome plated carbon-steel rod slides through a grease-retaining two-way piston seal inside the riveted rolling-packed barrel. Because the 450mm stroke is quite long for a 40mm bore, external guide rails are recommended to prevent rod bending under side loads.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X450-40 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X450-40 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 450 mm |
| Adjustable window | 410–450 mm (trim 40 mm) |
| Acting type | Double acting |
| Port size | G1/4 |
| 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 | Adjustable air cushion (both ends) |
| Max standard stroke | Up to 500 mm |
The rear stopper sets the end position — it is a travel stop, not a lock. Overall length = A + 2 × stroke + adjustable stroke. MBLJ/MBLCJ mounting is Basic / FA / LB only (no SDB, no back-cover code). Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a margin.
Model Code: Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X450-40
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×450 | Nominal stroke length in mm. |
| -40 | Adjustable-stroke amount (mm you can trim at the rear). |
| S | Optional built-in magnet for a CMSG/DMSG/EMSG sensor switch. |
Related: MBLJ (adjustable stroke, fixed bumper), MBL (fixed stroke), MBLD (double rod).
Where the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X450-40 Is Used
Long-Reach Conveyor Diverter
Pushes cartons across a 450mm transfer gap with 628 N of force, using the 410-450mm adjustable window to fine-tune the diverter arm reach without moving the mount.
High-Speed Packaging Press
Cycles rapidly to fold heavy cardboard, relying on the adjustable air cushion to decelerate the 40mm rod smoothly and prevent end-cover damage at high kinetic energy.
Automated Glue Dispenser
Extends fully to apply adhesive on large panels, using the rear 40mm stopper to set precise 410mm retraction limits for varied panel widths.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X450-40 the Right Cylinder?
Step down to the 32mm bore if your application requires less force (402 N push at 0.5 MPa), or step up to the 50mm bore for heavier payloads (981 N push at 0.5 MPa). Choose the MBLCJ over the MBLJ when you need adjustable air cushioning to decelerate fast moving loads, or choose the MBLC if you have a fixed stroke and do not need a travel stopper. The rear adjuster sets the end position but does not lock the load, and the cushion only decelerates; use an external locking mechanism if you need to hold position without live air.
Mounting is limited to Basic, FA flange, or LB foot styles, as there is no back-cover or SDB pivot option for this series. The overall length equals A + 2 x stroke + adjust, so plan your envelope accordingly. This exact replacement requires a 40mm bore, 450mm stroke, 40mm adjust code, G1/4 port, PT thread, and no magnet. For any stroke at or approaching 300mm or more, always support the load with an external guide to prevent rod side-load bending.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Adjustable window fits your end position
- ✓ Adjuster is a travel stop, not a lock
- ✓ Magnet (S) for sensors?
- ✓ Side load — add a guide on long strokes
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear stopper for the end position (a travel stop, not a lock).
- check Avoid side load; add an external guide on long strokes.
- check Mounting: Basic / FA flange / LB foot (no SDB, no back-cover code).
- check Installation by qualified personnel per AirTAC docs.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X450-40 FAQ
At 0.5 MPa, the 40mm bore provides 628 N push and 528 N pull force. At 0.7 MPa, push increases to 880 N, with a maximum theoretical output of 128 kgf at 1.0 MPa. The cylinder cannot hold position without live air; the rear stopper is a travel limit and the cushion only decelerates, neither acts as a lock.
No, this specific SKU (MBLCJ40X450-40) does not have a built-in magnet, so it cannot support AirTAC CMSG, DMSG, or EMSG position sensors. You would need the -S variant of this cylinder to enable reed or electronic solid-state switch tracking.
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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.
Related AirTAC Adjustable-Stroke Cylinders
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