THK Brand LMK40LUU Long Type Square Flange linear motion bearing

Linear motion bearings have the characterized of smooth movement,low friction,high rigidity and long life span,economical and easy to maintain or replace

Motorized linear slides such as machine slides, XY tables, roller tables and some dovetail slides are bearings moved by drive mechanisms. Not all linear slides are motorized, and non-motorized dovetail slides, ball bearing slides and roller slides provide low-friction linear movement for equipment powered by inertia or by hand. All linear slides provide linear motion based on bearings, whether they are ball bearings, dovetail bearings or linear roller bearings. XY Tables, linear stages, machine slides and other advanced slides use linear motion bearings to provide movement along both X and Y multiple axis.

Flange slide bearing has the features of Low friction coefficients and long usage spans, High temperature, self-lubricated, anti-corrosion.Using feature: Linear bearings are used widely in electronic equipment, pull tester and digital three-dimensional coordinate measuring device. Such as precision equipment, as well as multi-axis machine tools, press tool, grinder automatic gas cutting machine, printer, card sorting machine, food packaging machine and other industrial machinery sliding components…

Application:

Linear bearings are widely used in electronic equipment, tensile testing machine and the digital three-dimensional coordinate measuring equipment, precision equipment,and multi axis machine tools, presses, tool grinder, automatic gas cutting machine,printer, card sorting machine, food packing machines and other industrial machinery sliding components

Features of linear bearing:

1. linear bearing LM, LME, LMB, LMF, LMK, LMH, KH,

“LM” means metric standard type
“LME” means inch standard type
“UU” means rubber seals on the both sides of the long type bearing

“OP” means open type
“AJ” means adjustment type*LM…UU: LM…(sylinder), LM…OP(open type), LM…AJ(clearance adustable)
*LME…UU: LME…(sylinder), LME…OP(open type), LME…AJ(clearance adustable), LM…UU &

LME…LUU: Long type
*KH: High-precision mini bearing

FAQ1: How to Mount LMK40LUU Square Flange Bearings？

The flange of LMK40LUU bearings makes it easy to bolt the bearing unit directly onto a flat surface.
Preparation: Make sure the mounting surface and the shaft are clean and free of any burrs or debris.
Mounting: Slide the bearing onto the shaft, then align the bolt holes on the flange with the mounting holes on your machine or structure.
Securing: Secure the bearing using bolts and washers. For a single bearing, you can tighten the bolts in a crisscross pattern to ensure even pressure. If you are mounting multiple bearings, be sure to align them to prevent binding.

FAQ2: What difference between LMK40UU and LMK40LUU Bearings?

The primary difference is the length.
LMK40UU is the standard or short-type bearing. It has a single set of ball rows and is suitable for lighter loads or where a compact design is a priority.
LMK40LUU is the long-type bearing, indicated by the “L” in its designation. It has a longer body with more sets of ball rows, which provides higher load capacity, increased rigidity, and better stability against moments and twisting forces.

FAQ3: What are the applications of LMK40LUU in CNC Machines?

The LMK40LUU is a great choice for CNC machines due to its high rigidity and smooth motion. It’s commonly used to support the linear movement of various machine components, such as:
CNC Routers: To guide the movement of the gantry and spindle head.
3D Printers: For the precise linear motion of the print bed and extruder.
Multi-axis Machine Tools: In applications where a combination of linear and rotational motion is required.