Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X60-40S
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X60-40S is a genuine double-acting aluminum-barrel mini cylinder with a Ø20mm bore, a 60mm nominal stroke and a rear adjustable-stroke stopper — trim up to 40mm for a usable window of 20–60mm. Adjustable air cushion (both ends).
- BoreØ20 mm
- Stroke60 mm
- Adjustable20–60 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM8×1.25
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X60-40S
The AirTAC MBLCJ20X60-40S is a compact double-acting aluminum mini cylinder featuring a rear stroke adjuster and dual adjustable air cushions. It delivers 157 N of push force and 132 N of pull force at 0.5 MPa. The rear stopper allows you to trim up to 40 mm of travel, creating a usable stroke window of 20 to 60 mm for precise end-position tuning.
Unlike the standard MBLJ which relies on a fixed rubber bumper, this model uses screw-tunable air cushions at both ends to decelerate heavier or faster moves, protecting the end covers. The built-in magnet (-S) supports CMSG reed and DMSG or EMSG solid-state sensors for rod position detection. It uses a G1/8 port, an Ø8 mm hard-chrome plated carbon steel rod, and a riveted rolling-packed barrel for tight spaces.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X60-40S Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X60-40S |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø20 mm |
| Nominal stroke | 60 mm |
| Adjustable window | 20–60 mm (trim 40 mm) |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M8×1.25 |
| 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 300 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 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 MBLCJ20X60-40S
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 20 | Bore size in mm. |
| ×60 | 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 MBLCJ20X60-40S Is Used
PCB Depaneling Saw Feed
Uses the 20-60 mm adjustable stroke window to set the exact cutting depth on a circular saw blade, while the air cushion prevents jerk at the end of the 60 mm feed.
Micro-Dispenser Valve Trigger
The 157 N push force reliably opens a high-viscosity adhesive valve, with the rear stopper ensuring the nozzle opens exactly 20 mm without over-travel.
Lightweight Parts Ejector
Ejects small plastic caps from a mold cavity at speed; the tunable cushion slows the rod before impact, protecting the Ø8 mm hard-chrome piston rod.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ20X60-40S the Right Cylinder?
Choose this 20 mm bore when you need 157 N push force at 0.5 MPa with highly precise stroke trimming. If your application requires less force, the smaller 12 mm class lacks the adjuster features, but if you need more power, stepping up to the 25 mm bore yields 245 N of push force. Compared to the MBLJ, the MBLCJ adds tunable end-of-stroke deceleration instead of a fixed bumper, while the MBLC offers fixed stroke lengths. Remember the rear adjuster is a travel stop, not a lock; it will not hold a load in place without live air pressure.
Mounting is limited to Basic, FA flange, or LB foot styles, as there is no back-cover or SDB pivot option available. The overall length extends by the adjustment amount. To replace this unit, match the 20 mm bore, 60 mm stroke, 40 mm adjust code, G1/8 PT thread, and the built-in magnet. Because the stroke is under 300 mm, side-load risks are lower, but an external guide is still recommended for 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 MBLCJ20X60-40S FAQ
At 0.5 MPa, this 20 mm bore cylinder provides 157 N of push force and 132 N of pull force. At 0.7 MPa, the push force increases to 220 N. The maximum theoretical force is 32 kgf at 1.0 MPa.
The adjustable stroke is a rear mechanical stopper that physically limits travel to a 20-60 mm window, setting the exact end position. The adjustable air cushion is a screw-tunable valve that regulates air exhaust to decelerate the piston near the end caps. Neither feature locks or holds the load in place.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
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Most inquiries answered within 7-8 hours.
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