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LMF-L-UU/LMK-L-UU Long Type Flange Linear Bearing

Home · Products · Linear Bearing · LMF-L-UU/LMK-L-UU Long Type Flange Linear Bearing
  • LMF-L-UU/LMK-L-UU Long Type Flange Linear Bearing
  • LMF-L-UU/LMK-L-UU Long Type Flange Linear Bearing
LMF-L-UU/LMK-L-UU Long Type Flange Linear Bearing

LMF-L-UU/LMK-L-UU Long Type Flange Linear Bearing

The LMF-L/LMK-L series linear bearings are high-performance variants based on the classic LMF/LMK flanged linear bearings, featuring a significantly lengthened (L-type) bearing body design. They perfectly combine the convenience of flange mounting with the heavy-duty, high-rigidity benefits of the extended design, aiming to provide a ready-to-install, robust, and reliable complete solution for medium to heavy-duty applications with significant overhang loads, eccentric moments, or requiring extremely high operational smoothness.

Inquiry
PREV: LMH-L-UU Long Type European Standard Double Cut Edge Linear Bearing Next: LMH-UU Double Cut Edge Linear Bearing

Technology

Core Sub-series Comparison and Selection Guide

Product Features LMF-L-UU (Extended Round Flange Type) LMK-L-UU (Extended Flange Type) Core Selection Logic
Core Positioning An extended standard solution offering heavy-duty capacity, high rigidity and easy installation. An extended, reinforced solution designed for heavy-duty loads, high torque resistance and ultra-stable installation. Select the L-type for heavy loads; then choose either the F-type or K-type flange based on the torque requirement and available space.
Design Focus Round flange + extended bearing housing. Whilst providing easy installation, the extended design delivers a significant leap in load capacity and rigidity. Square/rectangular flange + extended bearing housing. The torque-resisting advantages of the flange combine with the high rigidity of the extended housing to create the ultimate cost-effective solution for handling the most complex loads. The ‘extended’ version enhances absolute rigidity, whilst the ‘flanged’ version optimises torque resistance; combining the two enables the unit to meet the most demanding challenges.
Key Advantages 1. Significantly enhanced load capacity: The extension allows for a higher rated load.
2. Exceptional bending rigidity: Effectively suppresses deformation under cantilever loads.
3. Maintains ease of installation: Still utilises a one-piece flange mounting, eliminating the need for a bearing housing.		 1. Unrivalled resistance to overturning moments: The extended body and wide flange jointly provide unparalleled resistance to overturning and torsional loads.
2. Extremely smooth operation: The combination of long guides and a secure installation ensures minimal vibration.
3. Exceptional value for money: Achieves performance close to that of custom heavy-duty components at the cost and with the installation methods of standard parts.		 The LMF-L is designed for directional heavy loads, whilst the LMK-L is intended for complex torque-bearing heavy loads.
Structural Performance High. Provides extremely high bending rigidity in the extended direction, suitable for withstanding heavy axial loads. Exceptional. Delivers outstanding performance under multi-dimensional composite loads (particularly torque), maintaining stable load orientation. When the load is not only heavy but also has a centre of gravity offset from the axis, the LMK-L is the only option.
Installation and Space Requirements Installation is as straightforward as the LMF, but requires greater axial installation space to accommodate the extended body. Installation is as robust as the LMK, requiring a larger mounting surface and axial clearance. When selecting the extended version, it is essential to ensure that the equipment has sufficient installation length and space for flange mounting.
Typical Applications Tool arm guides for medium-sized vertical machining centres, push rod supports for heavy-duty logistics sorters, and lifting shafts for large-scale laboratory equipment. Drive slides for large laser cutting heads, sliders for heavy-duty robotic seventh axes (floor rails), and precision guide mechanisms for rear stopper systems on sheet metal bending machines. These applications are specifically tailored for heavy-duty and precision operations within the industrial sector.

Technical Focus: The Synergistic Effect of Extension and Flange
1. Performance Superposition Principle:
Extended design: By increasing the support length, bending stiffness is exponentially increased (inversely proportional to L³), and load capacity is linearly increased.
Flange design: Provides a stable mounting base, transferring 100% of the extended bearing's performance to the machine frame, especially the flange design which perfectly resists the increased torque that may result from the extension.
2. Selection Upgrade Path:
When standard LMF/LMK bearings lack sufficient rigidity, the first step should be to upgrade to the extended L-type of the same flange type.
If LMF-L still cannot withstand complex torques, then an upgrade to LMK-L is necessary.

Applications
LMF-L-UU Linear Bearings: Suitable for vertical lifting or horizontal pushing mechanisms with heavy loads but relatively simple torque, representing the most economical upgrade starting point for heavy-duty applications.
LMK-L-UU Linear Bearings: Suitable for precision heavy-duty equipment with heavy loads and significant eccentric moments (such as cantilever structures), providing the ultimate standard component solution for high rigidity and stability within a limited budget.

The LMF-L-UU/LMK-L-UU long-type flange linear bearing successfully encapsulates the performance of "heavy-duty high rigidity," which usually requires customized design, into a standardized, ready-to-install product form.
Choosing this series means you can obtain powerful capabilities to meet demanding mechanical challenges with minimal engineering time and the lowest procurement and assembly costs. It represents the pinnacle of standard component design philosophy: covering infinitely complex real-world application scenarios through a limited but crucial set of model variations (extended lengths, flange shapes).
For engineers facing heavy-duty design challenges, it's the most reliable and powerful "hammer" in their toolbox. It allows you to confidently declare: my equipment has a solid foundation, strong enough to support the future.

Parameters

NomInal shaft
diameter
(mm)		 Part No. Weight
(g)		 Major dimenslons and tolerance
Steel dr D Df L
LMF(K)...LUU mm Tolerance(μm) mm Tolerance(μm) mm mm Tolerance(μm)
6 LMF 6L-UU 31 6 0-10 12 0-13 28 35 ±300
LMK 6L-UU 25
8 LMF 8L-UU 51 8 0-10 15 0-13 32 45 ±300
LMK 8L-UU 43
10 LMF 10L-UU 98 10 0-10 19 0-16 40 55 ±300
LMK 10L-UU 78
12 LMF 12L-UU 110 12 0-10 21 0-16 42 57 ±300
LMK 12L-UU 90
13 LMF 13L-UU 130 13 0-10 23 0-16 43 61 ±300
LMK 13L-UU 108
16 LMF 16L-UU 190 16 0-10 28 0-16 48 70 ±300
LMK 16L-UU 165
20 LMF 20L-UU 260 20 0-12 32 0-19 54 80 ±300
LMK 20L-UU 225
25 LMF 25LUU 540 25 0-12 40 0-19 62 112 ±300
LMK 26LUU 500
30 LMF 30L-UU 680 30q 0-12 45 0-19 74 123 ±300
LMK 30L-UU 590
35 LMF 35L-UU 1020 35 0-15 52 0-22 82 135 ±300
LMK 35L-UU 930
40 LMF 40LUU 1570 40 0-15 60 0-22 96 151 ±300
LMK 40LUU 1380
50 LMF 50L-UU 3600 50 0-15 80 0-22 116 192 ±300
LMK 50L-UU 3400
60 LMF 60L-UU 4500 60 0-20 90 0-25 134 209 ±300
LMK 60L-UU 4060

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)
LMF(K)...LUU K
mm		 t
mm		 Dp
mm		 X
mm		 Y
mm		 Z
mm
LMF 6L-UU 22 5 20 3.5 6 3.1 15 15 323 529 6
LMK 6L-UU
LMF 8L-UU 25 5 24 3.5 6 3.1 15 15 431 784 8
LMK 8L-UU
LMF 10L-UU 30 6 29 4.5 7.5 4.1 15 15 588 1100 10
LMK 10L-UU
LMF 12L-UU 32 6 32 4.5 7.5 4.1 15 15 813 1570 12
LMK 12L-UU
LMF 13L-UU 34 6 33 4.5 7.5 4.1 15 15 813 1570 13
LMK 13L-UU
LMF 16L-UU 37 6 38 4.5 7.5 4.1 15 15 1230 2350 16
LMK 16L-UU
LMF 20L-UU 42 8 43 5.5 9 5.1 20 20 1400 2740 20
LMK 20L-UU
LMF 25L-UU 50 8 51 5.5 9 5.1 20 20 1560 3140 25
LMK 26L-UU
LMF 30L-UU 58 10 60 6.6 11 6.1 20 20 2490 5490 30
LMK 30L-UU
LMF 35L-UU 64 10 67 6.6 11 6.1 25 25 2650 6270 35
LMK 35L-UU
LMF 40L-UU 75 13 78 9 14 8.1 25 25 3430 8040 40
LMK 40L-UU
LMF 50L-UU 92 13 98 9 14 8.1 25 25 6080 15900 50
LMK 50L-UU
LMF 60L-UU 106 18 112 11 17 11.1 30 30 7550 20000 60
LMK 60L-UU

Drawings

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