Airtac MBLCJ Adjustable Mini Cylinder MBLCJ63X175-40
The AirTAC Airtac MBLCJ Adjustable Mini Cylinder MBLCJ63X175-40 is a genuine double-acting aluminum-barrel mini cylinder with a Ø63mm bore, a 175mm nominal stroke and a rear adjustable-stroke stopper — trim up to 40mm for a usable window of 135–175mm. Adjustable air cushion (both ends).
- BoreØ63 mm
- Stroke175 mm
- Adjustable135–175 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM14×1.5
- CushionAdjustable air cushion (both ends)
About the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ63X175-40
The AirTAC MBLCJ63X175-40 is a double-acting, single-rod mini cylinder engineered for heavy-duty compact actuation, delivering 1558 N of push force and 1457 N of pull force at 0.5 MPa. It features a rear travel stopper that allows you to trim up to 40 mm of movement, creating a precise usable stroke window of 135 to 175 mm. This is paired with an adjustable air cushion at both ends, providing screw-tunable deceleration to absorb high kinetic energy and protect the end covers during rapid cycles.
Because this specific SKU lacks a built-in magnet, it cannot support a position sensor. The riveted aluminum barrel and grease-retaining two-way piston seal ensure longevity, while the Ø16 hard-chrome plated carbon steel rod resists corrosion. Note that the rear stopper sets the end position but does not mechanically hold the load, and the cushion only decelerates; neither function acts as a lock.
Airtac MBLCJ Adjustable Mini Cylinder MBLCJ63X175-40 Technical Specifications
| Model | Airtac MBLCJ Adjustable Mini Cylinder MBLCJ63X175-40 |
|---|---|
| Series | MBL aluminum-barrel mini round cylinder (adjustable stroke) |
| Bore size | Ø63 mm |
| Nominal stroke | 175 mm |
| Adjustable window | 135–175 mm (trim 40 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1458 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 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 MBLCJ63X175-40
| MBLCJ | MBLCJ aluminum-barrel adjustable-stroke mini cylinder with adjustable cushion. |
|---|---|
| 63 | Bore size in mm. |
| ×175 | 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 MBLCJ63X175-40 Is Used
Injection Mold Ejection
Provides 1558 N of push at 0.5 MPa to eject dense plastic parts, using the 40 mm rear stroke trim to perfectly time the ejection length within the 135-175 mm window.
Palletizer Stopper
Halts heavy pallets on a conveyor; the adjustable air cushion safely decelerates the 318 kgf maximum load impact, preventing end-cover damage.
Press Brake Tooling
Positions heavy bending tools with precise end-positioning, relying on the G1/4 ported double-acting power for consistent clamping force.
Is the Airtac MBLCJ Adjustable Mini Cylinder MBLCJ63X175-40 the Right Cylinder?
For lower force requirements, stepping down to the 50 mm bore yields 981 N of push at 0.5 MPa, whereas stepping up is unavailable as 63 mm is the largest in this series. Choose this MBLCJ over the MBLJ when your heavy loads require tunable end-of-stroke deceleration instead of a fixed rubber bumper, or over the MBLC if your machine needs a variable 135-175 mm end position rather than a fixed stroke. Mounting is limited to Basic, FA flange, or LB foot brackets, as no back-cover or SDB pivot options exist. The exact replacement match is a 63 mm bore, 175 mm stroke, 40 mm adjust, G1/4 port, PT thread, no magnet. Since the stroke is under 300 mm, side-load risk is moderate, but an external guide is still recommended for heavy radial 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 MBLCJ63X175-40 FAQ
At 0.5 MPa, it pushes with 1558 N and pulls with 1457 N. At 0.7 MPa, the push force reaches 2181 N. The absolute maximum theoretical force is 318 kgf at 1.0 MPa.
The rear adjuster is a mechanical travel stop that sets your end position within a 135-175 mm window, while the air cushion screw tunes the deceleration speed near the cover. Neither holds the load; you need an external lock for position holding.
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Standard models usually ship in 3-4 days.
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