P5 P4 P2 Ru228g Face Mount Crossed Roller Bearing

Product Description

Product Description

RU Face Mount Crossed Roller Bearing

The inner and outer rings of the RU series crossed roller bearings are of integral structure. The end faces of the inner and outer rings of the bearings are designed with mounting holes. Through these mounting holes, the bearings can be directly connected to the installation parts of the equipment without the need for additional fixing flanges and support seats, which simplifies the installation procedure and facilitates the structural design of the end face installation. The two rows of cylindrical rollers are arranged perpendicularly to each other on a 90-degree V-shaped raceway through isolation blocks. This arrangement allows a single bearing to withstand loads in all directions, such as radial loads, axial loads, and overturning moments. This makes the bearings have higher rigidity and can better withstand loads and maintain accuracy.

MODEL	Static load	Dynamic Load	Inner runour P5	Outer ring runout P5	Inner ring runout P4	Outer ring runout P4	Inner ring runout P2	Outer ring runout P2	Preload
	Cor (KN)	Cr(KN)	Kia/Sia (mm)	Kea/Sea (mm)	Kia/Sia (mm)	Kea/Sea (mm)	Kia/Sia (mm)	Kia/Sia (mm)	CC0 (mm)
RU42	2.91	2.43	0.004	0.007	0.003	0.005	0.0025	0.0025	0/-0.007
RU66	8.35	7.35	0.005	0.008	0.004	0.005	0.0025	0.004	0/-0.008
RU85	22.3	17.5	0.005	0.010	0.004	0.005	0.0025	0.005	0/-0.010
RU124	29.5	20.3	0.005	0.010	0.004	0.005	0.0025	0.006	0/-0.010
RU124(G)/RU124(X)	50.9	33.1	0.005	0.013	0.004	0.005	0.0025	0.007	0/-0.010
RU148(G)/RU124(X)	76.8	49.1	0.006	0.015	0.005	0.010	0.0025	0.007	0/-0.010
RU178(G)/RU178(X)	135	80.3	0.006	0.015	0.005	0.010	0.0025	0.007	0/-0.010
RU228(G)/RU228(X)	173	104	0.008	0.018	0.006	0.011	0.005	0.007	0/-0.010
RU297(G)/RU297(X)	281	156	0.010	0.020	0.008	0.013	0.005	0.008	0/-0.015
RU445(G)/RU445(X)	484	205.3	0.015	0.023	0.012	0.016	0.007	0.010	0/-0.020

Application

Application Areas	Specific applications
Industrial Robots	It is commonly used in the joints of robots, such as elbows and wrists, to ensure the robot's repeated positioning accuracy and smooth operation.
Medical Devices	It is used in some precision medical instruments, such as surgical robots, medical testing equipment, etc., to provide high-precision rotational motion for the instruments.
Measuring instruments	Used in various measuring instruments to help achieve precise measurement and positioning, and ensure the accuracy of measurement results.
Machining	It can be used for rotary tables in machining centers and precision rotary tables. It can withstand radial, axial loads and overturning moments to ensure machining accuracy.

FAQ

Labyrinth Water Barrier -Physical Barrier

Rubber Seal - PrecisionInterception

Flange O-ring - Static Sealing
Eliminates the Risk of Water
Leakage

Utilizing a non-contact labyrinth design,the intruding water flow undergoesmultiple deflections, slowing, anddepressurization, physically blocking thevast majority of external water sourcesand particles, forming the first andoutermost line of defense

A double-lip seal made of nitrilerubber (NBR) is installed inside thelabyrinth, tightly fitting the rotatingshaft to provide secondaryinterception of residual moisture andmicron-sized dust, ensuring absolutecleanliness inside the bearing.

A high-temperature resistant silicone
O-ring is installed at the matingsurface between the bearingmounting flange and the equipmentbase, completely eliminating the riskof static water leakage at the matingsurface, perfectly adapting to harshindustrial environments such as high-pressure cleaning and spraying.

Common Questions

Q1:MOQ & leatd time?

A: Standard stock items MOQ Ipc, lead time 1-7 days. Custom /P4 high precision order: 15-30 working

Q2:Common failure of RA thin wall cross roller bearing?
A: Abnormal noise: insufficient grease or improper mounting. Sticky rotation: over preload or bad flatness of mounting base. Increased clearance: shock overload. RA thin wall bearing requires rigid mounting seat. Thin aluminum plate base is not suggested.

Q3:Typical applications of RU cross roller bearing?
A: Robot joints, optical inspection tumntable, CCD vision equipment, small CNC index table, semiconductor equipment, medical device, automated rotary fixture.
Q4:Can you offer drawing, 3D STEP file and inspection report?
A: 2D drawing for standard models, partial items with 3D STEP file. Inspection report can be supplied together with shipment.
Q5: Any requirement for mounting housing?
A: RA thin wall bearing is sensitive to housing deformation. Good flatness and high rigidity of mounting base are mandatory. Poor housing rigidity will destroy rotary accuracy even if bearing itself is qualified.

Luoyang Efind ---Our Factory

Luoyang E-find Precision Bearing Manufacturing Co. Ltd. was established in 2004. The company is located in Luoyang, China's bearing manufacturing base, specializing in the research and development and production of high-precision cross roller bearings, rotary table bearings, harmonic reducer bearings, slewing bearings and non-standard bearings.

Quality Detecion

Strict Testing Process

The cleaned RU face mount crossed roller bearing is firmly clamped on the workbench of the three-dimensional coordinate measuring machine to ensure that the clamping is firm and does not affect the measurement. Using the manual or automatic measurement function of the three-dimensional coordinate measuring machine, according to the pre-planned measurement path, the probe slowly contacts the bearing measurement point to collect coordinate data. After the measurement is completed, the measurement software automatically processes and analyzes the data and generates a test report. The report covers detailed information such as the measurement value, tolerance range, deviation value, etc. of each test item, and intuitively displays the quality status of the bearing.