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LMH-UU Double Cut Edge Linear Bearing

Home · Products · Linear Bearing · LMH-UU Double Cut Edge Linear Bearing
  • LMH-UU Double Cut Edge Linear Bearing
LMH-UU Double Cut Edge Linear Bearing

LMH-UU Double Cut Edge Linear Bearing

The LMH-UU series bearing is an economical linear bearing based on the classic LM standard bearing, featuring a unique rectangular flange (double-cut edge) design. Its "H" shaped flange, achieved by removing the unnecessary parts of a circular flange, provides superior resistance to overturning moments and higher space utilization efficiency at virtually no additional cost. It is a "smart" solution designed for automation applications with slight eccentric loads, limited space, and cost sensitivity.

Inquiry
PREV: LMF-L-UU/LMK-L-UU Long Type Flange Linear Bearing Next: LMF-UU/ LMK-UU Flange Linear Bearing

Technology

The core value of the LMH-UU double-cut edge bearing lies in its clever balance of "basic functionality," "torque resistance," and "cost-effectiveness."

Characteristic Dimensions LMH-UU (Double-beveled Rectangular Flange Type) LMF-UU (Round Flange Type) LMK-UU (Square/Rectangular Flange Type) Core Value Proposition
Core Positioning The balanced choice offering economy, torque resistance and high space utilisation. An economical, convenient and versatile basic flange solution. An economical, reinforced flange solution offering high torque resistance. The H-type strikes an excellent balance between the cost of the F-type and the performance of the K-type.
Flange Design Rectangular (double-beveled) flange. Cut from a circular flange to form two parallel, wide mounting surfaces, with mounting holes on both sides. A complete round flange with evenly spaced mounting holes. Wide square or rectangular flanges, typically mounted at the four corners. The H-type utilises the minimum amount of material to provide the maximum effective moment-resisting arm in a specific direction.
Cost and Space Efficiency Extremely high. Offers the highest material utilisation, with only a negligible increase in cost whilst providing significantly better torque resistance than the F-type, and a more compact overall profile. High. Lowest cost; the round profile may occupy dead space. High. Requires a large amount of material, resulting in the highest cost, and necessitates a substantial installation area. The H-type is the preferred choice when seeking ‘cost-effectiveness in torque resistance’ and ‘space utilisation’.
Resistance to Overturning Moments Good. The two parallel wide faces provide significantly better directional anti-tipping capability than round flanges, and are particularly effective at resisting torques acting perpendicular to the axis of the wide faces. Average. Good. Provides excellent all-round torque resistance. For most applications involving directional off-centre loading, the H-type provides sufficient and efficient rigidity.
Installation and Layout Convenient and neat. The two parallel mounting faces are easy to align and install side-by-side on aluminium profiles and sheet metal, facilitating modular, high-density linear layouts. Convenient, but layout flexibility is average. Sturdy, but takes up a lot of space and has low layout density. In compact designs requiring multiple bearings to be mounted side-by-side, the H-type offers the most elegant and space-saving layout.
Versatility Fully compatible with the LM series. Inner diameter, precision and service life are consistent with the standard LM-UU, ensuring global interchangeability. Fully compatible. Fully compatible. It shares the unrivalled supply chain advantages of the LM series.

Design Ingenuity: The Cleverness of the Double-Cut Edge
1. Directional Strengthening: The overturning moment in most applications has a clear main direction. The LMH's rectangular flange concentrates material and structural strength in the direction resisting this critical moment, achieving precise performance enhancement.
2. Manufacturing Friendly:  Direct milling of both sides on a circular flange blank is a simple process, a prime example of achieving functional improvement at extremely low cost.

Applications
The LMH-UU double-cut edge bearing is an ideal choice for compact equipment that prioritizes cost control and requires a certain degree of torque resistance:
Consumer and Desktop Devices: High-end 3D printer print head motion mechanisms, Z-axis sliders of desktop CNC engraving machines.
Light Automation and Robotics: Small SCARA robot arm joints, guiding supports for automated inspection fixtures.
Office and Medical Equipment: Moving parts of high-speed scanners, drive modules of medical diagnostic equipment slides.
Any application where the LMF-UU feels slightly insufficient in rigidity, but the LMK-UU is considered too costly or space-consuming.

The LMH-UU double-cut edge bearing is an outstanding example of engineering pragmatism. It doesn't pursue superficial parameters but focuses on solving practical problems: "How to obtain the best possible resistance to eccentric loads within a limited budget and space?"
Choosing the LMH-UU means you possess a keen awareness of cost-effectiveness and precise demand analysis capabilities. It is a "smart" standard component that allows your design to stand out in fierce market competition with its reliability and ingenious layout.

Parameters

NomInal shaft
diameter
(mm)		 Part No. Weight
(g)		 Major dimenslons and tolerance
Steel dr D Df L
LMH...UU mm Tolerance(μm) mm Tolerance(μm) mm mm Tolerance(μm)
6 LMH 6-UU 21 6 0-9 12 0-13 28 19 ±300
8 LMH 8-UU 33 8 0-9 15 0-13 32 24 ±300
10 LMH 10-UU 64 10 0-9 19 0-16 40 29 ±300
12 LMH 12-UU 68 12 0-9 21 0-16 42 30 ±300
13 LMH 13-UU 81 13 0-9 23 0-16 43 32 ±300
16 LMH 16-UU 112 16 0-9 28 0-16 48 37 ±300
20 LMH 20-UU 167 20 0-10 32 0-19 54 42 ±300
25 LMH 25-UU 325 25 0-10 40 0-19 62 59 ±300
30 LMH 30-UU 388 30 0-10 45 0-19 74 64 ±300

Part No. Major dimenslons and tolerance Eccentricity(μm) Squareness(μm) Basic load rating NomInal shaft
diameter
(mm)
Steel Flange dynamic
(C N)		 static
(Co N)
LMH...UU W
mm		 t
mm		 A
mm		 F
mm		 X
mm		 Y
mm		 Z
mm
LMH 6-UU 18 5 20 - 3.5 6 3.1 12 12 206 265 6
LMH 8-UU 21 5 24 - 3.5 6 3.1 12 12 274 392 8
LMH 10-UU 25 6 29 - 4.5 7.5 4.1 12 12 372 549 10
LMH 12-UU 27 6 32 - 4.5 7.5 4.1 12 12 510 784 12
LMH 13-UU 29 6 33 - 4.5 7.5 4.1 12 12 510 784 13
LMH 16-UU 34 6 31 22 4.5 7.5 4.1 12 12 774 1180 16
LMH 20-UU 38 8 36 24 5.5 9 5.1 15 15 882 1370 20
LMH 25-UU 46 8 40 32 5.5 9 5.1 15 15 980 1570 25
LMH 30-UU 51 10 49 35 6.6 11 6.1 15 15 1570 2740 30

Drawings

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