Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X400-40
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X400-40 is a genuine double-acting aluminum-barrel mini cylinder with a Ø40mm bore, a 400mm nominal stroke and a rear adjustable-stroke stopper — trim up to 40mm for a usable window of 360–400mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke400 mm
- Adjustable360–400 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 MBLCJ40X400-40
The AirTAC MBLCJ40X400-40 is a compact double-acting aluminum mini cylinder featuring a rear adjustable stroke and a tunable air cushion at both ends. You can trim up to 40mm of rear travel, giving an effective working window of 360 to 400mm. Driven by a Ø16mm carbon-steel rod through a G1/4 port, it delivers 628N of push force and 528N of pull force at 0.5 MPa, making it highly effective for moving heavier jigs or executing long 400mm transfers.
Unlike the base MBLJ which relies on a fixed rubber bumper, this MBLCJ variant uses screw-tunable air cushions to decelerate the piston near each end cover, absorbing kinetic energy from fast, heavy loads. Note that this specific SKU lacks a built-in magnet, meaning it cannot support CMSG, DMSG, or EMSG position sensors. The riveted aluminum barrel and grease-retaining two-way piston seal ensure consistent friction and wear characteristics across its 30-800 mm/s speed range.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X400-40 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X400-40 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 400 mm |
| Adjustable window | 360–400 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 MBLCJ40X400-40
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×400 | 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 MBLCJ40X400-40 Is Used
CNC Lathe Bar Feeder
Pushes raw bar stock through the spindle over the 360-400mm adjustable window, using the tunable cushion to halt the 628N feed without jarring the collet.
Pallet Transfer Ejector
Kicks machined aluminum parts off a conveyor line, relying on the air cushion to decelerate the 16mm rod smoothly at the end of its 400mm stroke.
Composite Press Demolder
Strips cured composite panels from heated molds, where the rear adjuster dials in the exact 360mm extraction point to protect the part.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X400-40 the Right Cylinder?
If you need less force, stepping down to the Ø32 bore provides 402N of push force at 0.5 MPa, while moving up to the Ø50 bore yields 981N for heavier payloads. Choose this MBLCJ over the MBLJ when your application's kinetic energy exceeds what a fixed bumper can absorb, or over the MBLC if you need to fine-tune the end position. Remember that the rear adjuster is a mechanical travel stop, not a load-holding lock; the air cushion only decelerates and does not brake. Mounting is strictly limited to Basic, FA (flange), or LB (foot) as there is no back-cover or SDB pivot option. To replace this cylinder, match the 40mm bore, 400mm stroke, 40mm adjust code, G1/4 port, PT thread, and the absence of the -S magnet. Because the stroke is 400mm, the small 16mm rod is highly susceptible to side-load bending; always guide the load externally to prevent rod damage.
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 MBLCJ40X400-40 FAQ
At 0.5 MPa, it provides 628N push and 528N pull. At 0.7 MPa, the push force increases to 880N. The maximum theoretical force is 128 kgf at 1.0 MPa.
No. Because this specific SKU lacks the -S code for a built-in magnet, it cannot accept CMSG, DMSG, or EMSG electronic switches. You must select an MBLCJ40X400-40S variant to enable position sensing.
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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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