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MGW-C/H Series Mini Linear Guide

Home · Products · Linear Guideway · MGW-C/H Series Mini Linear Guide

MGW-C/H Series Mini Linear Guide

Product Overview: Miniature Size, Wide-Body Performance
The MGW-C/H series is a miniature wide-body ball-type linear guide. Building upon the miniaturization core concept of the MGN series, it significantly increases the width of the guide rail and slider, thus providing a larger load contact area and stronger resistance to torque under the same compact overall height. This product is designed for cutting-edge precision equipment where space is extremely limited, but high demands are placed on motion rigidity, smoothness, and load capacity.

Technology

The MGW-C/H series mini linear guide is a "powerhouse" among miniature linear guides, its core advantage being the achievement of unusual mechanical performance at a miniature scale.

Performance Characteristics MGW-C/H Series (Miniature Wide-Profile Type) MGN-C/H Series (Standard Miniature Type) Core Value
Core Positioning The expert in heavy-duty load capacity and high rigidity within compact spaces. An ultra-compact, versatile miniature solution. Resolves the conflicting requirement that “micro-devices also require high rigidity.”
Structural Design Miniaturization + Wide-Profile Design. Features wider guide rails and a wider slider base while maintaining a low overall height. Miniaturized design + standard width. Compensates for the loss of rigidity caused by height limitations through increased width, achieving a significant leap in performance.
Load Capacity High. Due to the increased contact area and optimized lever arm design, its rated load capacity is typically 30%–50% higher—or even more—than that of the MGN series of the same height. Good; meets most miniature load requirements. Enables the driving of heavier loads in micro-devices or substantially extends the service life of motion systems.
Rigidity (Torque Resistance) Strong. The wide-body design provides superior resistance to overturning and torsional loads, ensuring more stable performance under eccentric forces. Average. Ensures that micro-motion platforms (such as optical mounts and precision probes) maintain precise orientation under complex loading conditions.
Smooth Operation Excellent. The large support surface ensures smoother, more stable operation with better damping, effectively suppressing micro-vibrations. Excellent. Provides a more stable motion base for applications such as micrometer-level positioning and scanning imaging.
Accuracy Grade High. Offers precision (P) to ultra-precision (UP) grade options comparable to the MGN series. High. The wide-width design does not compromise accuracy; rather, it helps maintain precision.
Model Classification C-Type: Flanged wide slide block, side-mounted, saving height.
H-Type: Square wide slide block, top-mounted, sturdy and easy to install.
C/H Type. Offers two high-performance mounting options for various compact structures.

Main Technical Parameters and Selection
1. Design Philosophy:  Applies the "area moment of inertia" principle, significantly increasing the moment of inertia of the cross-section by increasing the width, thereby achieving a qualitative leap in resistance to bending and torsion within a small vertical space.
2. Specification Range: Available in specifications such as MGW7, MGW9, MGW12, MGW15, etc., where the number represents the guide rail width (unit: mm). For the same numerical specification (e.g., MGN9 and MGW9), the MGW series has a larger slider width and guide rail width.
3. Key Selection Criteria:
Height is still the primary constraint: Confirm the maximum allowable total installation height for the equipment.
Prioritize wide-body design: Within the allowable height range, choosing the MGW series instead of the MGN series will directly result in significant performance improvements.
Verify load and torque: If the application involves significant eccentric forces or requires extremely high motion smoothness, the MGW series is a more reliable choice.

Applications
The MGW-C/H series mini linear guide is the ideal choice for the following top-tier miniature equipment with demanding requirements for both space and performance:
Ultra-precision optical systems: Miniature adjustment mechanisms for space telescopes, micro-motion units for mask stages in high-end lithography machines.
High-end semiconductor inspection: Scanning stages for nanoscale morphology measuring instruments (such as atomic force microscopes AFM), precision motion axes for wafer defect detection equipment.
Biomedical engineering: Specimen stages for confocal microscopes, high-rigidity miniature arms for cell surgery robots. Precision Manufacturing and Micro-Assembly: Precision placement equipment for miniature components (such as MEMS), and active alignment platforms for fiber optic arrays.

The MGW-C/H series mini linear guide represents the evolution of miniature linear guidance technology from simply "solving the problem of existence" to "pursuing excellence." It demonstrates that even within millimeters, engineers can still endow components with powerful mechanical performance through ingenious design. Choosing the MGW series means your miniature device design not only pursues compactness but also prioritizes inherent robustness, stability, and reliability. It is a strategic cornerstone for building high-performance precision motion systems in a confined space, helping your products establish a solid hardware advantage in cutting-edge technological competition.

Parameters

Model
No.
Dimensions
of Assembly
(mm)
Dimensions of Block
(mm)
Dimensions of Rail
(mm)
Mounting
Bolt for
      Rail
Basic
Dynamic
Load
Rating
Basic
Static
Load
Rating
Static Rated
Moment(kgf.m)
Weight
H H1 N W B B1 C L1 L G Gn MxI H2 WR WB HR D h d P E (mm) C(KN) C0(KN) MR
N-m
MP
N-m
MY
N-m
block
kg
Rail
kg/m
MGW 5C 6.5 1.5 3.5 17 13 2 - 14.1 20.5 - Φ0.8 M2.5x1.5 1 10 - 4 5.5 1.6 3 20 5 M2.5x7 0.68 1.18 5.5 2.7 2.7 0.016 0.34
MGW 5CL - 8.5  6.5  M3-THRU
MGW 7C 1.9  5.5  25  19  10  21  31.2  - Φ1.2 M3x3 1.85  14  - 5.2  3.2  3.5  30  10      M3x6 1.37  2.06  15.70  7.14  7.14  0.020  0.51 
MGW 7H 19  30.8  41  1.77  3.14  23.45  15.53  15.53  0.029 
MGW 9C 12  2.9  30  21  4.5  12  27.5  39.3  - Φ1.2 M3x3 2.4  18  - 4.5  3.5  30  10      M3x8 2.75  4.12  40.12  18.96  18.96  0.040  0.91 
MGW 9H 23  3.5  24  38.5  50.7  3.43  5.89  54.54  34.00  34.00  0.057 
MGW 12C 14  3.4  40  28  15  31.3  46.1  - Φ1.2 M3x3.6 2.8  24  - 8.5  4.5  4.5  40  15      M4x8 3.92  5.59  70.34  27.80  27.80  0.071  1.49 
MGW 12H 28  45.6  60.4  5.10  8.24  102.70  57.37  57.37  0.103 
MGW 15C 16  3.4  60  45  7.5  20  38  54.8  5.2  M3 M4x4.2 3.2  42  23  9.5  4.5  4.5  40  15  M4x10 6.77  9.22  199.34  56.66  56.66  0.143  2.86 
MGW 15H 35  57  73.8  8.93  13.38  299.01  122.60  122.60  0.215 

Drawings


Supports Product Combination Selection

Production Capacity

Cyclone Milling Machines

LWN160-6000mm Leistritz Cyclone milling machines imported directly from
Germany, the ball screw shaft precision can be C3, C5, and C7 the max length
can be 7000mm

Rolled Thread CNC Machines

PR-40CNC Profiroll rolled thread ball screw machines imported directly from
Germany the ball screw shaft precision can be C5, C7 -C10

Rolled Thread CNC Machines

ST-20.2 and ST-347.7 rolled thread ball screw machines from TaiWan.
The ball screw shaft precision can be C7 - C10

Ball Screw Assembly Workshop

We conduct nut assembly in a constant temperature workshop,  all workers
having decades of work experience and zero clearance between the screw
and nut.

Ball Screw Assembly Workshop

One ball screw shaft matches one ball screw nut. Because each ball screw
shaft has a very tiny different tolerance. There are dozens of different
ball sizes for different screw shaft.
Our ball screw shaft and nut can be interchanged with the Taiwan
TBI ball screw shaft and nut very well.

Linear Guideway Selection

Non-interchangeable type:


Note:
1.The roman numerals express a matched set of rails.
2.No symbol indicates standard protection (end seal and bottom seal)
ZZ:End seaL bottom sealand scraper
KK: Double seals, bottom seal and scraper
DD: Double seals and bottom seal
3.Block type HGL is the low profile design of HGH (square type), the assembled height is same as HGW (flange type) in same size.

Model Number of HG Rail:


Interchangeable type:


Linear Guideway Preload & Precision Instruction

Preload Classes
offers three classes of standard preload for various applications and conditions.

Class Code Preload Condition Examples of Application
Light Preload ZO 0~0.02C Certain load direction, low impact, low precision required Transportation devices, auto-packing machines, X-Y axis for general industrial machines, welding machines, welders
Medium Preload ZA 0.05C~0.07C High precision required Machining centers,Z axis for general industrial machines, EDM,NC lathes, Precision X-Y tables, measuring equipment
Heavy Preload ZB 0.10C~0.12C High rigidity required, with vibration and impact Machining centers, grinding machines,NC lathes,horizontal and vertical milling machines, Z axis of machine tools, Heavy cutting machines

 

Class Interchangeable Guideway Non-Interchangeable Guideway
Preload classes Z0,ZA Z0,ZA,ZB


Besides the standard top mounting type, WANGONG also offers the bottom mounting type of rails to customers.

Mounting from Top Mounting from bottom


Acouracy Classes
Thp accuracy of HG series can be classified into normal (C), high (H), precision (P), super precision (SP), ultra precision (UP), five classes. Please choose the class by referring the accuracy of applied equipment.


Accuracy Standards

Item HG-15,20
Accuracy Classes Normal (C) High (H) Precision (P)
Dimensional tolerance of height H ±0.1 ±0.03 ±0.015
Dimensional tolerance of width N ±0.1 ±0.03 ±0.015
Variation of height H 0.02 0.01 0.006
Variation of width N 0.02 0.01 0.006
Running parallelism of block surface C to surface A See Table
Running parallelism of block surface D to surface B See Table
Item HG-25,30,35
Accuracy Classes Normal (C) High (H) Precision (P)
Dimensional tolerance of height H ±0.1 ±0.04 ±0.02
Dimensional tolerance of width N ±0.1 ±0.04 ±0.02
Variation of height H 0.02 0.015 0.007
Variation of width N 0.03 0.015 0.007
Running parallelism of block surface C to surface A See Table
Running parallelism of block surface D to surface B See Table
Item HG-45,55
Accuracy Classes Normal (C) High (H) Precision (P)
Dimensional tolerance of height H ±0.1 ±0.05 ±0.025
Dimensional tolerance of width N ±0.1 ±0.05 ±0.025
Variation of height H 0.03 0.015 0.007
Variation of width N 0.03 0.02 0.01
Running parallelism of block surface C to surface A See Table
Running parallelism of block surface D to surface B See Table

Acouracy of Running Parallelism

Rail Length (mm) Accuracy (μm)
C H P SP UP
0~100 12 7 3 2 2
100~200 14 9 4 2 2
200~300 15 10 5 3 3
300~500 17 12 6 3 3
500~700 20 13 7 4 2
700~900 22 15 8 5 3
900~1,100 24 16 9 6 3
1,100~1,500 26 18 11 7 4
1,500~1,900 28 20 13 8 4
1,900~2,500 31 22 15 10 5
2,500~3,100 33 25 18 11 6
3,100~3,600 36 27 20 14 7
3,600~4,000 37 28 21 15 7