Airtac MBLCJ Adjustable Mini Cylinder MBLCJ50X400-30
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ50X400-30 is a genuine double-acting aluminum-barrel mini cylinder with a Ø50mm bore, a 400mm nominal stroke and a rear adjustable-stroke stopper — trim up to 30mm for a usable window of 370–400mm. Adjustable air cushion (both ends).
- BoreØ50 mm
- Stroke400 mm
- Adjustable370–400 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM14×1.5
- 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 MBLCJ50X400-30
The AirTAC MBLCJ50X400-30 is a compact double-acting aluminum mini cylinder featuring a rear travel stopper and twin adjustable air cushions. The 30 mm rear adjuster creates a usable end-position window of 370 to 400 mm, letting you dial in the exact extended length without machining spacers. Delivering 981 N of push force at 0.5 MPa, this 50 mm bore unit handles substantial loads while its screw-tunable end cushions absorb kinetic energy to prevent end-cover damage during fast 400 mm strokes.
This configuration uses a standard PT port thread and a Ø16 hard-chrome plated carbon steel rod. Because this specific SKU lacks the -S magnet suffix, it cannot accept CMSG, DMSG, or EMSG position sensors. The riveted rolling-packed barrel and grease-retaining piston seal ensure long service life, but remember the rear stopper sets the travel limit—it does not lock or hold the load in place.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ50X400-30 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ50X400-30 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø50 mm |
| Nominal stroke | 400 mm |
| Adjustable window | 370–400 mm (trim 30 mm) |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M14×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 881 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 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 MBLCJ50X400-30
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 50 | Bore size in mm. |
| ×400 | Nominal stroke length in mm. |
| -30 | 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 MBLCJ50X400-30 Is Used
Injection Mold Ejection
Provides 981 N of push force to eject dense plastic parts from molds, using the 30 mm stroke adjuster to perfectly time the ejection length within the 370-400 mm window.
Packaging Press Sealing
Tunes the end-of-stroke air cushion to softly decelerate a 400 mm rapid close onto corrugated cartons, preventing impact damage to the sealing head.
Woodworking Panel Feeding
Pushes heavy MDF panels along a conveyor with 1374 N at 0.7 MPa, relying on the hard-chrome rod and external guides to maintain straight travel over the long extension.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ50X400-30 the Right Cylinder?
Choose this 50 mm bore when you need 981 N of push force at 0.5 MPa for heavier tooling. If your payload is lighter, stepping down to the 40 mm bore drops the output to 628 N, saving space and air volume. If you need more power, the 63 mm bore jumps to 1558 N. The MBLCJ is preferred over the MBLJ when higher cycle speeds require tunable air deceleration instead of a fixed rubber bumper, while the MBLC offers fixed stroke if you do not need rear adjustment.
For a direct replacement, match the 50 mm bore, 400 mm stroke, 30 mm adjust code, G1/4 port, PT thread, and Basic mounting (no FA/LB suffix). Mounting is limited to Basic, FA, or LB—there is no SDB pivot or back-cover option. Because the stroke is 400 mm, the 16 mm rod is susceptible to bending under lateral stress; always use an external guide rail to support the load. The rear adjuster and the cushions decelerate travel but neither acts as a mechanical lock to hold position without live air.
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 MBLCJ50X400-30 FAQ
At 0.5 MPa, the MBLCJ50X400-30 delivers 981 N push and 881 N pull force. At 0.7 MPa, the push force increases to 1374 N. The maximum theoretical force is 200 kgf at the 1.0 MPa operating pressure limit.
This specific SKU lacks a built-in magnet, so it cannot accept CMSG, DMSG, or EMSG position switches. The rear adjuster trims the stroke by up to 30 mm, creating a usable travel window of 370 to 400 mm. This stopper sets the end position but does not lock the load, while the separate adjustable air cushion only controls deceleration speed.
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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