Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-50
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-50 is a genuine double-acting aluminum-barrel mini cylinder with a Ø40mm bore, a 350mm nominal stroke and a rear adjustable-stroke stopper — trim up to 50mm for a usable window of 300–350mm. Adjustable air cushion (both ends).
- BoreØ40 mm
- Stroke350 mm
- Adjustable300–350 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-50
The AirTAC MBLCJ40X350-50 is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and an adjustable air cushion at both ends. It delivers 628 N of push force and 528 N of pull force at 0.5 MPa. A rear stopper allows you to trim up to 50 mm of travel, creating a usable stroke window of 300 to 350 mm to fine-tune end positions.
This 40 mm bore uses a G1/4 port and a Ø16 hard-chrome plated carbon-steel rod. The riveted rolling-packed barrel and heterogeneous two-way grease-retaining piston seal ensure consistent lubrication. Tuning the end-of-stroke cushioning protects the covers during heavy moves, while the compact body fits tight spaces. This specific SKU lacks a built-in magnet, so it cannot accept CMSG, DMSG, or EMSG position sensors.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-50 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-50 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø40 mm |
| Nominal stroke | 350 mm |
| Adjustable window | 300–350 mm (trim 50 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 MBLCJ40X350-50
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 40 | Bore size in mm. |
| ×350 | Nominal stroke length in mm. |
| -50 | 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 MBLCJ40X350-50 Is Used
Printed Circuit Board Tester
Provides 628 N of precise push force over a 300-350 mm adjustable window to cycle test heads onto PCB arrays, using the tuned air cushion to prevent impact bounce.
Pallet Diversion Arm
Extends a 350 mm stroke to redirect heavy pallets on a packaging line, with the adjustable cushion absorbing the kinetic energy of the redirecting mass.
Automated Lathe Loader
Transfers bar stock into a spindle, utilizing the 50 mm rear stroke adjustment to dial in the exact feed distance without repositioning the cylinder mount.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ40X350-50 the Right Cylinder?
For lower force needs, stepping down to the 32 mm bore yields 402 N push at 0.5 MPa, while the 50 mm bore provides 981 N if your load requires more thrust. Choose this MBLCJ over the MBLJ when you need tunable air cushioning rather than a fixed rubber bumper, or over the MBLC when you require the 50 mm rear travel stopper. The rear adjuster sets a physical travel end and the cushion only decelerates; neither holds the load, so use an external lock for position holding. Mounting is limited to Basic, FA flange, or LB foot (no SDB or back-cover options). At 350 mm of travel, the 16 mm rod is susceptible to bending under lateral stress, requiring an external guide to prevent side-load damage. Exact replacement requires: 40 mm bore, 350 mm stroke, 50 mm adjust, G1/4 port, PT thread, Basic mount, no magnet.
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 MBLCJ40X350-50 FAQ
At 0.5 MPa, this 40 mm bore cylinder provides 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 880 N. The maximum theoretical force is 128 kgf at 1.0 MPa.
The rear stroke adjuster is a mechanical stop that trims the usable travel down to a 300 mm minimum from the 350 mm nominal stroke. The adjustable air cushion is a screw-tunable valve that controls deceleration at the stroke ends. Neither system locks the rod in place; live air pressure or an external lock is required to hold a load.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
Related AirTAC Adjustable-Stroke Cylinders
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