Airtac MBLCJ Adjustable Mini Cylinder MBLCJ50X40-30
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ50X40-30 is a genuine double-acting aluminum-barrel mini cylinder with a Ø50mm bore, a 40mm nominal stroke and a rear adjustable-stroke stopper — trim up to 30mm for a usable window of 10–40mm. Adjustable air cushion (both ends).
- BoreØ50 mm
- Stroke40 mm
- Adjustable10–40 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 MBLCJ50X40-30
The AirTAC MBLCJ50X40-30 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and a tunable air cushion at both ends. The 30 mm adjuster trims the 40 mm nominal stroke, yielding a usable travel window of 10 to 40 mm. Driven by a Ø16 mm rod through a G1/4 port, it delivers 981 N of push force at 0.5 MPa, making it highly effective for heavier mid-range actuation tasks.
Unlike the base MBLJ which relies on a fixed rubber bumper, this model uses screw-tunable end-of-stroke deceleration to absorb kinetic energy and protect the end covers during fast cycles. The rear stopper sets the travel end position but does not lock or hold the load. Furthermore, this specific SKU lacks a built-in magnet, meaning it cannot support CMSG, DMSG, or EMSG position sensors. The riveted rolling-packed barrel and 20 µm hard-chrome plated carbon-steel rod ensure durable, low-friction operation.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ50X40-30 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ50X40-30 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø50 mm |
| Nominal stroke | 40 mm |
| Adjustable window | 10–40 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 MBLCJ50X40-30
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 50 | Bore size in mm. |
| ×40 | 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 MBLCJ50X40-30 Is Used
Bottle Capper Heads
Drives capping heads on a rotary bottling line, using the 981 N push force to seal caps tightly while the air cushion prevents harsh mechanical crashes at the 40 mm stroke end.
Print Roller Tensioning
Adjusts tension rollers on wide-format printing presses, utilizing the 10-40 mm stroke window to fine-tune web tension without requiring custom cylinder lengths.
Stator Coil Press
Compresses stator coils in electric motor manufacturing, where the tunable deceleration safely slows the 881 N pull force to protect delicate copper windings from impact deformation.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ50X40-30 the Right Cylinder?
Stepping down to the 40 mm bore reduces output to 628 N push at 0.5 MPa, while stepping up to the 63 mm bore yields 1558 N. Choose this 50 mm model when your payload requires approximately 100 kgf of push force combined with precise end-position tuning. The MBLCJ provides superior impact absorption compared to the MBLJ bumper, and offers rear adjustability that the fixed-stroke MBLC lacks.
Remember that the rear adjuster is strictly a travel stop, and the air cushion only decelerates; neither mechanism will hold a load in place without live air pressure. Mounting is limited to Basic, FA flange, or LB foot styles, as no SDB pivot or back-cover options exist for this series. For a direct replacement, match the 50 mm bore, 40 mm stroke, 30 mm adjust code, G1/4 port with PT threads, and confirm no magnet is required. Because the stroke is under 300 mm, side-load risks are moderate, but an external guide is still recommended for heavy lateral loads.
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 MBLCJ50X40-30 FAQ
At 0.5 MPa, the 50 mm bore delivers 981 N push and 881 N pull force. At 0.7 MPa, the push force is 1374 N. The maximum theoretical force is 200 kgf at 1.0 MPa, with a proof pressure of 1.5 MPa.
This specific SKU lacks the -S code, so it has no internal magnet and cannot accept CMSG, DMSG, or EMSG sensors. The 30 mm rear adjustment screw acts only as a travel stop to set your 10-40 mm window, and the air cushion only decelerates the piston; neither feature locks or holds the load in place.
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.
Related AirTAC Adjustable-Stroke Cylinders
Request a Quote for Airtac MBLCJ Adjustable Mini Cylinder MBLCJ50X40-30
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.