Follow us
Search keyword

Web Menu

Product Search

Language

Share

Products · Products · Products · Products · Products · Products · Products · Products · Products · Products · Products · Products · Products · Products · Products · Products ·

LMFP-UU/LMKP-UU Recessed Flanged Linear Bearing

Home · Products · Linear Bearing · LMFP-UU/LMKP-UU Recessed Flanged Linear Bearing
  • LMFP-UU/LMKP-UU Recessed Flanged Linear Bearing
  • LMFP-UU/LMKP-UU Recessed Flanged Linear Bearing
LMFP-UU/LMKP-UU Recessed Flanged Linear Bearing

LMFP-UU/LMKP-UU Recessed Flanged Linear Bearing

The LMFP/LMKP series linear bearings are high-stability linear bearings featuring an embedded flange design. Their core characteristic is that the flange structure is partially embedded into the bearing body, creating a more stable, integrated support. This design not only provides a flush, compact mounting interface, but more importantly, delivers superior mounting stability and deformation resistance compared to standard protruding flanges, making them particularly suitable for precision applications involving vibration, shock, or requiring higher demands on motion smoothness.

Inquiry
PREV: LMHP-UU Recessed Double-Cut Linear Bearing Next: LMEF-L-UU/LMEK-L-UU Long Type European Standard Flange Linear Bearing

Technology

Core Sub-series Comparison and Selection Guide

Product Features LMFP-UU (Recessed Circular Flange Type) LMKP-UU (Embedded Flange Type) Key Selection Criteria
Core Positioning A circular flange solution offering high stability, a flush mounting surface and excellent vibration resistance. A flange solution offering exceptional stability, a flush mounting surface and resistance to heavy-load impacts. When both stability and installation flatness are required, the FP/KP recessed models are the preferred choice.
Core Structure and Advantages Recessed flange (countersunk design). The flange is integrated more deeply into the bearing housing, resulting in a shorter and more direct force transmission path. Once installed, the screw heads do not protrude, and the overall bending and torsional rigidity is superior to that of standard flange types of the same specification. Embedded flange. Building on the high torque resistance of standard flanges, the embedded design further reinforces the structural strength at the flange root, providing enhanced resistance to deformation caused by complex loads. The ‘flush-mounted’ design provides a physical guarantee of stability by altering the force transmission mechanism.
Enhanced Stability 1. Improved resistance to fretting: In vibrating environments, the connection to the mounting plate is more secure, making it less prone to slight loosening.
2. Smoother operation: Increased rigidity reduces system deformation, resulting in a more consistent motion trajectory.
3. Potential for extended service life: A more secure installation reduces the generation of abnormal stresses.		 1. Performance under extreme conditions: Under heavy loads and high-frequency impacts, deformation of the mounting surface is minimal, ensuring long-term precision retention.
2. Improved dynamic response: Higher system rigidity enhances the response speed and bandwidth of servo systems.		 Stability is the cornerstone of precision and reliability, and the flush-mounted design has been specifically reinforced to this end.
Installation and Space Requirements Installation requires countersinking to achieve flush mounting and maximum stability. The overall structure is more compact, offering high space utilisation. This requires equally precise counterbore machining and imposes higher installation requirements, but delivers the greatest return in terms of stability. Achieving top-tier stability requires the additional cost of more precise machining of the mounting plate.
Functionality and Materials Fully compatible with the LMF-UU. Identical internal ball system, precision grade, load curve and materials (bearing steel, seals, etc.). Fully consistent with the LMK-UU. Possesses identical core performance parameters. The upgrade consists solely of structural and mechanical optimisation of the mounting interface; core motion performance remains unchanged.
Typical Applications High-speed precision transmission mechanisms (e.g. pick-and-place machines), testing equipment in vibrating environments, and automated modules requiring a clean appearance. Accessory interfaces for heavy-duty CNC machine tools, spindle guidance for high-precision press-fitting equipment, and heavy-load joints for industrial robots. Intended for ‘critical workstations’ where standard flanges may compromise performance due to vibration or deformation.

Design Analysis: How does the embedded design improve stability?
1. Optimized Mechanical Principles: The embedded design is equivalent to strengthening and shortening the "cantilever beam" at the base of the "flange," significantly improving local rigidity and fatigue resistance. When the bearing is under load, the embedded structure deforms less, and the force is transferred more directly to the mounting plate.
2. Addressing Pain Points: In standard protruding flanges, the base is an area of ​​stress concentration and potential plastic deformation when subjected to alternating loads or impacts over time. The embedded design fundamentally strengthens this weak point.

Applications
LMFP-UU Linear Bearings: Used in precision optical positioning platforms, semiconductor peripheral equipment, and high-speed packaging machinery where smooth operation is required and space is limited.
LMKP-UU Linear Bearings: Used in high-end machining centers with interchangeable worktables, focusing head drives of large laser cutting machines, and wind power equipment testing mechanisms, ensuring long-term stable and trouble-free operation in heavy-load, high-value applications where downtime costs are significant.

The LMFP-UU/LMKP-UU recessed flanged linear bearing is a carefully considered "robustness" upgrade to a classic product.
It doesn't change the core performance parameters, but by reconstructing the geometry and mechanical design of the mounting interface, it achieves more valuable operational stability and long-term accuracy retention.
It represents a shift in engineering thinking from "meeting functionality" to "pursuing excellence," a clever touch in creating high-end equipment and building differentiated competitive advantages.

Parameters

NomInal shaft
diameter
(mm)		 Part No. Major dimenslons and tolerance
Steel dr D L Flange
LMF(K)P...UU mm Tolerance(μm) mm Tolerance(μm) mm Tolerance(μm) I
mm		 Df
mm		 K
mm
6 LMFP 6-UU 6 0-9 12 0-13 19 ±300 5 28 22
LMKP 6-UU
8 LMFP 8-UU 8 0-9 15 0-13 24 ±300 5 32 25
LMKP 8-UU
10 LMFP 10-UU 10 0-9 19 0-16 29 ±300 6 40 30
LMKP 10-UU
12 LMFP 12-UU 12 0-9 21 0-16 30 ±300 6 42 32
LMKP 12-UU
13 LMFP 13-UU 14 0-9 23 0-16 32 ±300 6 43 34
LMKP 13-UU
16 LMFP 16-UU 16 0-9 28 0-16 37 ±300 6 48 37
LMKP 16-UU
20 LMFP 20-UU 18 0-10 32 0-19 42 ±300 8 54 42
LMKP 20-UU
25 LMFP 25-UU 20 0-10 40 0-19 59 ±300 8 62 50
LMKP 25-UU
30 LMFP 30-UU 22 0-10 45 0-19 64 ±300 10 74 58
LMKP 30-UU
35 LMFP 35-UU 24 0-12 52 0-22 70 ±300 10 82 64
LMKP 35-UU
40 LMFP 40-UU 26 0-12 60 0-22 80 ±300 13 96 75
LMKP 40-UU
50 LMFP 50-UU 28 0-12 80 0-22 100 ±300 13 116 92
LMKP 50-UU
60 LMFP 60-UU 30 0-15 90 0-25 110 ±300 18 134 106
LMKP 60-UU

Part No. Major dimenslons and tolerance Eccentricity(μm) Squareness(μm) Basic load rating Weight
g		 NomInal shaft
diameter
(mm)
Steel Flange dynamic
(C N)		 static
(Co N)
LMF(K)P...UU t
mm		 Dp
mm		 X
mm		 Y
mm		 Z
mm
LMFP 6-UU 5 20 3.5 6.5 3.1 12 12 206 265 24 6
LMKP 6-UU 18
LMFP 8-UU 5 24 3.5 6.5 3.1 12 12 274 392 37 8
LMKP 8-UU 29
LMFP 10-UU 6 29 4.5 8 4.1 12 12 372 549 72 10
LMKP 10-UU 52
LMFP 12-UU 6 32 4.5 8 4.1 12 12 510 784 76 12
LMKP 12-UU 57
LMFP 13-UU 6 33 4.5 8 4.1 12 12 510 784 88 13
LMKP 13-UU 72
LMFP 16-UU 6 38 4.5 8 4.1 12 12 774 1180 120 16
LMKP 16-UU 104
LMFP 20-UU 8 43 5.5 9.5 5.1 15 15 882 1370 180 20
LMKP 20-UU 145
LMFP 25-UU 8 51 5.5 9.5 5.1 15 15 980 1570 340 25
LMKP 25-UU 300
LMFP 30-UU 10 60 6.6 11 6.1 15 15 1570 2740 470 30
LMKP 30-UU 375
LMFP 35-UU 10 67 6.6 11 6.1 20 20 1670 3140 650 35
LMKP 35-UU 560
LMFP 40-UU 13 78 9 14 8.1 20 20 2160 4020 1060 40
LMKP 40-UU 880
LMFP 50-UU 13 98 9 14 8.1 20 20 3820 7940 2200 50
LMKP 50-UU 2000
LMFP 60-UU 18 112 11 17.5 11.1 25 25 4700 10000 3000 60
LMKP 60-UU 2560

Drawings

Related Products