China best Manufacturer direct sales UCLP 2 series High Precision Pillow Blocks/Bearing House/Units Agricultural Machinery parts with Hot selling

Product Description

Product Description

The TANN mounted bearing units is a bearing which combines the spherical outside surface ball bearing, seal, and a housing of high-grade cast iron or pressed steel. It features a variety of structure patterns, and is suitable for application under tough conditions.

Product Parameters

Pillow blcoks – Height reduced duty
Set screw type
Unit No. Dimensions (mm / inch) Bolt Size mm inch Bearing No. Housing No. Weight (kg)
d h a e b s1 s2 g w B n
UCLP201 12 31.75 127 95 38 13 16 14 64 31 12.7 M10 UC201 LP204 0.69 
UCLP201-8 1/2 1-1/4 5 3-3/4 1-1/2 1/2 5/8 9/16 2-33/64 1 .2205 0.5 3/8 UC201-8 0.69 
UCLP202 15 31.75 127 95 38 13 16 14 64 31 12.7 M10 UC202 LP204 0.69 
UCLP202-9 9/16 1-1/4 5 3-3/4 1-1/2 1/2 5/8 9/16 2-33/64 1.22 0.5 3/8 UC202-9 0.69 
UCLP202-10 5/8 UC202-10 0.69 
UCLP203 17 31.75 127 95 38 13 16 14 64 31 12.7 M10 UC203 LP204 0.68 
UCLP203-11 11/16 1-1/4 5 3-3/4 1-1/2 1/2 5/8 9/16 2-33/64 1.22 0.5 3/8 UC203-11 0.67 
UCLP204 20 31.75 127 95 38 13 16 14 64 31 12.7 M10 UC204 LP204 0.66 
UCLP204-12 3/4 1-1/4 5 3-3/4 1-1/2 1/2 5/8 9/16 2-33/64 1.22 0.5 3/8 UC204-12 0.66 
UCLP205 25 33.34 140 105 38 13 16 15 68 34.1 14.3 M10 UC205 LP205 0.81 
UCLP205-13 13/16 1-5/16 5-1/2 4-1/8 1-1/2 1/2 5/8 19/32 2-43/64 1.34 0.56 3/8 UC205-13 0.85 
UCLP205-14 7/8 UC205-14 0.83 
UCLP205-15 15/16 UC205-15 0.82 
UCLP205-16 1 UC205-16 0.81 
UCLP206 30 39.69 160 121 44 17 20 17 80 38.1 15.9 M14 UC206 LP206 1.24 
UCLP206-17 1-1/16 1-9/16 6-19/64 4-3/4 1-47/64 43/64 25/32 21/32 3-5/32 1 .5000 0.63 1/2 UC206-17 1.27 
UCLP206-18 1-1/8 UC206-18 1.26 
UCLP206-19 1-3/16 UC206-19 1.24 
UCLP206-20 1-1/4 UC206-20 1.23 
UCLP207 35 46.04 167 127 48 17 20 18 91 42.9 17.5 M14 UC207 LP207 1.58 
UCLP207-20 1-1/4 1-13/16 6-9/16 5 1-7/8 43/64 25/32 45/64 3-37/64 1.69 0.69 1/2 UC207-20 1.64 
UCLP207-21 1-5/16 UC207-21 1.61 
UCLP207-22 1-3/8 UC207-22 1.58 
UCLP207-23 1-7/16 UC207-23 1.55 
UCLP208 40 49.2 184 137 54 17 20 18 100 49.2 19 M14 UC208 LP208 1.89 
UCLP208-24 1-1/2 1-15/16 7-1/4 5-13/32 2-1/8 43/64 25/32 45/64 3-15/16 1.94 0.75 1/2 UC208-24 1.93 
UCLP208-25 1-9/16 UC208-25 1.90 
UCLP209 45 52.39 190 146 54 17 20 20 104 49.2 19 M14 UC209 LP209 2.14 
UCLP209-26 1-5/8 2-1/16 7-15/32 5-3/4 2-1/8 43/64 25/32 25/32 4-3/32 1 .9370 0.75 1/2 UC209-26 2.24 
UCLP209-27 1-11/16 UC209-27 2.20 
UCLP209-28 1-3/4 UC209-28 2.14 
UCLP210 50 55.56 206 159 60 20 23 21 112 51.6 19 M16 UC210 LP210 2.66 
UCLP210-29 1-13/16 2-3/16 8-1/8 6-1/4 2-3/8 25/32 29/32 53/64 4-13/32 2.03 0.75 5/8 UC210-29 2.78 
UCLP210-30 1-7/8 UC2 10-30 2.73 
UCLP210-31 1-15/16 UC210-31 2.68 
UCLP210-32 2 UC210-32 2.64 
UCLP211 55 61.91 219 171 60 20 23 23 124 55.6 22.2 M16 UC211 LP211 3.31 
UCLP211-32 2 2-7/16 8-5/8 6-17/64 2-3/8 25/32 29/32 29/32 38176 2.19 0.87 5/8 UC211-32 3.46 
UCLP211-33 2-1/16 UC211-33 3.40 
UCLP211-34 2-1/8 UC211-34 3.35 
UCLP211-35 2-3/16 UC211-35 3.29 
UCLP212 60 68.26 241 184 70 20 23 25 136 65.1 25.4 M16 UC212 LP212 4.90 
UCLP212-36 2-1/4 2-11/16 9-1/2 7-1/4 2-3/4 25/32 29/32 63/64 5-23/64 2.56 1 5/8 UC212-36 5.03 
UCLP212-37 2-5/16 UC212-37 4.95 
UCLP212-38 2-3/8 UC212-38 4.88 
UCLP212-39 2-7/16 UC212-39 4.81 

More Choices

Our main product ranges are ball bearings and full ranges of mounted bearing units, including 60 series, 62series, 63 series; thin-wall bearing such as 68 series and 69 series, and also flange bearings, inch bearings, high precision angular contact bearing; UC/UCP/UCF/UCFL/UCT, etc. Non-standard bearings based on customer’s demand are available too.

Wide range of products from strong supplying supplying chains to make suitable solution.

Advantage Products




Rational self- alignment
Larger load carrying capacity, relubrucable, longer service life of the units
Efficient, sealing ability of the units with covers is perfect
Solid housing, provide max rigidty against deformation for any condition
Easy and positive locking to shaft
Special heat-treatment on bearing inner ring prevent causing cracking
Unique device to prevent bearing outer ring rotation
Complete interchangeability between bearing and housing 
Easy installlation
Easy positioning for mounting


Agriculture Mining
Engineering Chemical machinery
Textile Plastic
Dyeing and fining Other industries

Company Profile

About Us

Focus on a variety of industries
Provide maintenance solutions
Optimize customer inventory and reduce cost

Established in 2012, HangZhou Granville is a branch of the Granville Group. With our experience, competitive prices and excellent service, we have won the praise of our customers. Our business involves standard and special industrial parts, automotive parts and construction machinery parts required for a variety of different industrial applications.
Our main products include
Bearing series :
ball bearings, deep groove ball bearings, self-aligning ball bearings, angularcontact ball bearings, cylindrical roller bearing, tapered roller bearings, thrust ball bearings, thrust rollerbearings, needle bearings, spherical bearings, joint bearings, pillow blocks, linear bearings, etc.
Accessories series:Automotive Spare Parts,Seals & O-rings ,Power transmission parts Chain and Sprocket
Our products are mainly exported to Europe, America, Middle East, Southeast Asia, India, Pakistan, Bangladesh, Singapore, Korea and other countries around the world. We have a large number of products in stock, which can be delivered with high efficiency in the shortest possible time to solve your matching problems in time. In addition, we have reliable quality and quantity of products to offer. We adhere to the principle of win-win situation and insist on “providing comprehensive quality products and best reputation” to provide excellent services to our customers.

What We Do

Comprehensive product range:
– Bearings
– Oil seals, Transmission belt
– Chain and Sprocket
– Hub assembly & Wheel bearings
– Coupling, castings
– Linear motion

Packaging & Shipping


Our Advantages

1. We have the most advanced bearing process equipment, CNC automatic facilities, and testing instruments.
2. We manufacture ball bearings and mounted bearing units, and also provide a strong full range of products, including electric motors and components One-stop partnerships products from our audited supply chain.
3. All products are manufactured exclusively by companies with ISO 9001:2008 certified Quality Systems which use state-of-the-art machines. The quality path starts from the beginning to deliver and goods’ quality trackable

Our Values
Behavior-based, service-oriented, focused on results and committed to continuous improvement

Advantage Manufacturing Processes and Quality Control:

01Heat Treatment
02 Centerless Grinding Machine 11200 (most advanced)
03 Automatic Production Lines for Raceway
04 Automatic Production Lines for Raceway
05 Ultrasonic Cleaning of Rings
06 Automatic Assembly
07 Ultrasonic Cleaning of Bearings
08 Automatic Greasing, Seals Pressing
09Measurement of Bearing Vibration (Acceleration)
10 Measurement of Bearing Vibration (Speed)
11 Laser Marking
12 Automatic Packing

After Sales Service

  1. Optimize customer inventory and reduce cost
  2. Provide maintenance solutions

Quality Warranty

Granville as a manufacturer of high quality products, guarantees compliance with the highest standards relative to the use of the best steel quality in the production process, the highest standards in the design of contact surfaces, as well as the most efficient packing and lubrication of parts. From material coming, quality control through all processes. Except interal test, goods to third party inspection if required. After the center of inspection and experiment being founded, effective methods of inspecting all kinds of raw materials are mastered and then the reliability of bearings is ensured. One of our main objectives is the continued improvement in the quality of our products and processes, in pursuit of which we obtained ISO certification 9001:2008 and TS16949. 


Q1.Can you accept OEM and customization?

A: Yes. We can customize it according to the samples and drawings you provide.

Q2.Do you keep a stock of these things?
A: In stocks

Q3.Can you provide samples free of charge?
A: Yes. We can provide samples free of charge. But the freight is paid by the customer.

Q4.What’s the delivery date?
A: The delivery time of sample orders is 3 working days.The bulk orders are 5-10 working days.

Q5: Why your price is higher than others?
A: Price = quality . We firmly believe that by the quality of the customer is always get more reliable than on price . So we insist on doing high-quality products.

Q6:What kind of transport do you have ?
A: According to the weight,we will choose the most appropriate mode of transport for you. Our freight forwarding is efficient and cheap.

How to Calculate Stiffness, Centering Force, Wear and Fatigue Failure of Spline Couplings

There are various types of spline couplings. These couplings have several important properties. These properties are: Stiffness, Involute splines, Misalignment, Wear and fatigue failure. To understand how these characteristics relate to spline couplings, read this article. It will give you the necessary knowledge to determine which type of coupling best suits your needs. Keeping in mind that spline couplings are usually spherical in shape, they are made of steel.

Involute splines

An effective side interference condition minimizes gear misalignment. When 2 splines are coupled with no spline misalignment, the maximum tensile root stress shifts to the left by 5 mm. A linear lead variation, which results from multiple connections along the length of the spline contact, increases the effective clearance or interference by a given percentage. This type of misalignment is undesirable for coupling high-speed equipment.
Involute splines are often used in gearboxes. These splines transmit high torque, and are better able to distribute load among multiple teeth throughout the coupling circumference. The involute profile and lead errors are related to the spacing between spline teeth and keyways. For coupling applications, industry practices use splines with 25 to 50-percent of spline teeth engaged. This load distribution is more uniform than that of conventional single-key couplings.
To determine the optimal tooth engagement for an involved spline coupling, Xiangzhen Xue and colleagues used a computer model to simulate the stress applied to the splines. The results from this study showed that a “permissible” Ruiz parameter should be used in coupling. By predicting the amount of wear and tear on a crowned spline, the researchers could accurately predict how much damage the components will sustain during the coupling process.
There are several ways to determine the optimal pressure angle for an involute spline. Involute splines are commonly measured using a pressure angle of 30 degrees. Similar to gears, involute splines are typically tested through a measurement over pins. This involves inserting specific-sized wires between gear teeth and measuring the distance between them. This method can tell whether the gear has a proper tooth profile.
The spline system shown in Figure 1 illustrates a vibration model. This simulation allows the user to understand how involute splines are used in coupling. The vibration model shows 4 concentrated mass blocks that represent the prime mover, the internal spline, and the load. It is important to note that the meshing deformation function represents the forces acting on these 3 components.

Stiffness of coupling

The calculation of stiffness of a spline coupling involves the measurement of its tooth engagement. In the following, we analyze the stiffness of a spline coupling with various types of teeth using 2 different methods. Direct inversion and blockwise inversion both reduce CPU time for stiffness calculation. However, they require evaluation submatrices. Here, we discuss the differences between these 2 methods.
The analytical model for spline couplings is derived in the second section. In the third section, the calculation process is explained in detail. We then validate this model against the FE method. Finally, we discuss the influence of stiffness nonlinearity on the rotor dynamics. Finally, we discuss the advantages and disadvantages of each method. We present a simple yet effective method for estimating the lateral stiffness of spline couplings.
The numerical calculation of the spline coupling is based on the semi-analytical spline load distribution model. This method involves refined contact grids and updating the compliance matrix at each iteration. Hence, it consumes significant computational time. Further, it is difficult to apply this method to the dynamic analysis of a rotor. This method has its own limitations and should be used only when the spline coupling is fully investigated.
The meshing force is the force generated by a misaligned spline coupling. It is related to the spline thickness and the transmitting torque of the rotor. The meshing force is also related to the dynamic vibration displacement. The result obtained from the meshing force analysis is given in Figures 7, 8, and 9.
The analysis presented in this paper aims to investigate the stiffness of spline couplings with a misaligned spline. Although the results of previous studies were accurate, some issues remained. For example, the misalignment of the spline may cause contact damages. The aim of this article is to investigate the problems associated with misaligned spline couplings and propose an analytical approach for estimating the contact pressure in a spline connection. We also compare our results to those obtained by pure numerical approaches.


To determine the centering force, the effective pressure angle must be known. Using the effective pressure angle, the centering force is calculated based on the maximum axial and radial loads and updated Dudley misalignment factors. The centering force is the maximum axial force that can be transmitted by friction. Several published misalignment factors are also included in the calculation. A new method is presented in this paper that considers the cam effect in the normal force.
In this new method, the stiffness along the spline joint can be integrated to obtain a global stiffness that is applicable to torsional vibration analysis. The stiffness of bearings can also be calculated at given levels of misalignment, allowing for accurate estimation of bearing dimensions. It is advisable to check the stiffness of bearings at all times to ensure that they are properly sized and aligned.
A misalignment in a spline coupling can result in wear or even failure. This is caused by an incorrectly aligned pitch profile. This problem is often overlooked, as the teeth are in contact throughout the involute profile. This causes the load to not be evenly distributed along the contact line. Consequently, it is important to consider the effect of misalignment on the contact force on the teeth of the spline coupling.
The centre of the male spline in Figure 2 is superposed on the female spline. The alignment meshing distances are also identical. Hence, the meshing force curves will change according to the dynamic vibration displacement. It is necessary to know the parameters of a spline coupling before implementing it. In this paper, the model for misalignment is presented for spline couplings and the related parameters.
Using a self-made spline coupling test rig, the effects of misalignment on a spline coupling are studied. In contrast to the typical spline coupling, misalignment in a spline coupling causes fretting wear at a specific position on the tooth surface. This is a leading cause of failure in these types of couplings.

Wear and fatigue failure

The failure of a spline coupling due to wear and fatigue is determined by the first occurrence of tooth wear and shaft misalignment. Standard design methods do not account for wear damage and assess the fatigue life with big approximations. Experimental investigations have been conducted to assess wear and fatigue damage in spline couplings. The tests were conducted on a dedicated test rig and special device connected to a standard fatigue machine. The working parameters such as torque, misalignment angle, and axial distance have been varied in order to measure fatigue damage. Over dimensioning has also been assessed.
During fatigue and wear, mechanical sliding takes place between the external and internal splines and results in catastrophic failure. The lack of literature on the wear and fatigue of spline couplings in aero-engines may be due to the lack of data on the coupling’s application. Wear and fatigue failure in splines depends on a number of factors, including the material pair, geometry, and lubrication conditions.
The analysis of spline couplings shows that over-dimensioning is common and leads to different damages in the system. Some of the major damages are wear, fretting, corrosion, and teeth fatigue. Noise problems have also been observed in industrial settings. However, it is difficult to evaluate the contact behavior of spline couplings, and numerical simulations are often hampered by the use of specific codes and the boundary element method.
The failure of a spline gear coupling was caused by fatigue, and the fracture initiated at the bottom corner radius of the keyway. The keyway and splines had been overloaded beyond their yield strength, and significant yielding was observed in the spline gear teeth. A fracture ring of non-standard alloy steel exhibited a sharp corner radius, which was a significant stress raiser.
Several components were studied to determine their life span. These components include the spline shaft, the sealing bolt, and the graphite ring. Each of these components has its own set of design parameters. However, there are similarities in the distributions of these components. Wear and fatigue failure of spline couplings can be attributed to a combination of the 3 factors. A failure mode is often defined as a non-linear distribution of stresses and strains.

China best Manufacturer direct sales UCLP 2 series High Precision Pillow Blocks/Bearing House/Units Agricultural Machinery parts     with Hot sellingChina best Manufacturer direct sales UCLP 2 series High Precision Pillow Blocks/Bearing House/Units Agricultural Machinery parts     with Hot selling