MGN / MGW Series – Miniature Linear Guideway

The MGN and MGW series are miniature linear guideways developed for compact, lightweight, and high-precision applications. They follow the widely copied MGN / MGW miniature footprint family; verify mounting dimensions per size before substituting. Available in both stainless steel and alloy steel material options, they suit cleanroom and miniaturized applications including semiconductor equipment, medical instruments, robotic arms, and precision measurement.

Key Features

  • Assembly Replacement – Direct replacement of existing same-series assemblies; custom rail end machining available per customer drawings
  • Dual Material Options – Available in stainless steel and alloy steel to meet different environmental requirements
  • Wide Option (MGW) – Wide rail design significantly improves moment load capacity; allows single-rail use
  • Smooth & Quiet – Optimized rolling elements and raceways for low-noise, high-cycle reciprocating motione reciprocation
  • High Positioning Accuracy – Compact design combined with precision machining to meet demanding displacement accuracy requirements

Looking for a HIWIN, THK or PMI equivalent? Compare this series against ten manufacturers in our linear guide interchange chart.

Pairs well with: HGH square guides · EG low-assembly guides
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Full Specifications

MGN / MGW Miniature Guideway — Block & Assembly Dimensions

Values as published by RFU Motion. Subject to change without notice.

Model H H1 N W B B1 C L1 L G Gn Mxl H2 MR N-m MP N-m MY N-m Block kg
MGN7CRFUMOTION.COM 8 1.5 5 17 12 2.5 8 13.5 22.5 — Φ1.2 M2×2.5 1.5 4.7 2.84 2.84 0.01
MGN7HRFUMOTION.COM 8 1.5 5 17 12 2.5 13 21.8 30.8 — Φ1.2 M2×2.5 1.5 7.64 4.8 4.8 0.015
MGN9CRFUMOTION.COM 10 2 5.5 20 15 2.5 10 18.9 28.9 — Φ1.4 M3×3 1.8 11.76 7.35 7.35 0.016
MGN9HRFUMOTION.COM 10 2 5.5 20 15 2.5 16 29.9 39.9 — Φ1.4 M3×3 1.8 19.6 18.62 18.62 0.026
MGN12CRFUMOTION.COM 13 3 7.5 27 20 3.5 15 21.7 34.7 — Φ2 M3×3.5 2.5 25.48 13.72 13.72 0.034
MGN12HRFUMOTION.COM 13 3 7.5 27 20 3.5 20 32.4 45.4 — Φ2 M3×3.5 2.5 38.22 36.26 36.26 0.054
MGN15CRFUMOTION.COM 16 4 8.5 32 25 3.5 20 26.7 42.1 4.5 M3 M3×4 3 45.08 21.56 21.56 0.059
MGN15HRFUMOTION.COM 16 4 8.5 32 25 3.5 25 43.4 58.8 4.5 M3 M3×4 3 73.5 57.82 57.82 0.092

MGN / MGW Miniature Guideway — Dimensions — Rail Dimensions

All dimensions in mm unless otherwise noted.

Model WR HR D h d P E (mm) C(KN) C0(KN) Rail kg/m
MGN7CRFUMOTION.COM 7 4.8 4.2 2.3 2.4 15 5 M2×6 0.98 1.24 0.22
MGN7HRFUMOTION.COM 7 4.8 4.2 2.3 2.4 15 5 M2×6 1.37 1.96 0.22
MGN9CRFUMOTION.COM 9 6.5 6 3.5 3.5 20 7.5 M3×8 1.86 2.55 0.38
MGN9HRFUMOTION.COM 9 6.5 6 3.5 3.5 20 7.5 M3×8 2.55 4.02 0.38
MGN12CRFUMOTION.COM 12 8 6 4.5 3.5 25 10 M3×8 2.84 3.92 0.65
MGN12HRFUMOTION.COM 12 8 6 4.5 3.5 25 10 M3×8 7.72 5.88 0.65
MGN15CRFUMOTION.COM 15 10 6 4.5 3.5 40 15 M3×10 4.61 5.59 1.06
MGN15HRFUMOTION.COM 15 10 6 4.5 3.5 40 15 M3×10 6.37 9.11 1.06
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© RFU Motion. Specifications subject to change without notice.

For the latest specs, please contact us.

Custom Manufacturing Available

Standard ball screws and linear guides don't always fit your design. Here's what RFU MOTION can customize based on your drawings:

  • Shaft end machining — machined precisely to your drawing
  • Screw length — cut to your exact requirement
  • Preload — light, medium, heavy, or custom value
  • Nut type — standard flange, special shape, or non-standard mounting interface
  • Rail length — continuous cutting with end finishing (chamfer or grinding)
  • Mounting holes — special thread sizes, hole spacing, or countersunk dimensions

Send us your drawing or specs — we'll deliver exactly what you need.

📦 MOQ: 1 piece / 1 set

⏱️ Lead time: Standard custom 5-7 days | Complex custom 7-15 days | Wire cutting +2 days

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