China factory Slot spacing and width interchangeable UCT 204 take-up bearing units with competitive units wholesaler

Product Description

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UCT 201-212

>>Why choose us

HOUSING MATERIAL Cast iron HT200 / Class 25B / GG20 / Cr.20 High stress loading
Bending stess<300 Mpa
BEARING MATERIAL Bearing steel Gcr15 / 52100 / 100Cr6 High & uniform hardness(61~65HRC)
High resistence
TRANSPORT PACKAGE Color box/Waterproof Plastic In Individual 1 / in several pieces together Customized solutions for your requirements
Bulk sale or whole sale
Dealer or terminal customer
QUALIFICATION International Standard Organization ISO9001 Guaranteed product qulity and company credit
BRAND TANN Experienced export manufacture for more than 10 years  Professional technical advices
Experienced market solutions
Thoughtful and careful services


  • UCT take-up units are suggested for industrial applications where normal loads are encountered.
  • UCT take-up units are used where shaft adjustment and belt-tightening devices are required, such as in conveyor applications.
  • These units provide compact, efficient supports for adjustable shafts and conveyor take-up pulleys.
  • Each unit comes assembled and ready for mounting.
  • These units use wide inner ring ball bearings with self-aligning spherical outside diameters that compensate for shaft misalignment.
  • TANN UCT series housed units feature the TANN set screw locking (UC) bearing insert.
  • Bearing pre-lubricated and ready for immediate installation.
  • Grease fitting supplied for re-lubrication.
  • The bonded seal design is well-suited for industrial applications involving wet or dirty environments.
  • Slot spacing and width are interchangeable with competitive units.
    Housing designed for ease of bearing

Applications: mining, metallurgy, agriculture, chemical industry, textile, printing and dyeing, conveying machinery, etc. 


>>  Technical Data 

2  >>  Advantages

3  >>  Manufacture Process

4  >>  Packaging

5 >>  TANN other series of products

1 >> Technical Data

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UCT 201-212

Unit No. Dimensions (mm / inch) Bearing No. mm inch Housing No. Weight (kg)
d O g p q S b k e a w j l h t B n
UCT201 12 16 10 51 32 19 51 12 76 89 94 32 21 61 44.5 31 12.7 UC201 T204 0.80 
UCT201-8 1/2 5/8 25/64 2-1/64 1-1/4 3/4 2-1/64 15/32 2-63/64 3-1/2 3-11/16 1-1/4 13/16 2-13/32 1-3/4 1.2205 0.5 UC201-8 0.79 
UCT202 15 16 10 51 32 19 51 12 76 89 94 32 21 61 44.5 31 12.7 UC202 T204 0.79 
UCT202-9 9/16 5/8 25/64 2-1/64 1-1/4 3/4 2-1/64 15/32 2-63/64 3-1/2 3-11/16 1-1/4 13/16 2-13/32 1-3/4 1.2205 0.5 UC202-9 0.79 
UCT202-10 5/8 UC202-10 0.79 
UCT203 17 16 10 51 32 19 51 12 76 89 94 32 21 61 44.5 31 12.7 UC203 T204 0.78 
UCT203-11 11/16 5/8 25/64 2-1/64 1-1/4 3/4 2-1/64 15/32 2-63/64 3-1/2 3-11/16 1-1/4 13/16 2-13/32 1-3/4 1.2205 0.5 UC203-11 0.77 
UCT204 20 16 10 51 32 19 51 12 76 89 94 32 21 61 44.5 31 12.7 UC204 T204 0.76 
UCT204-12 3/4 5/8 25/64 2-1/64 1-1/4 3/4 2-1/64 15/32 2-63/64 3-1/2 3-11/16 1-1/4 13/16 2-13/32 1-3/4 1.2205 0.5 UC204-12 0.76 
UCT205 25 16 10 51 32 19 51 12 76 89 97 32 24 62 48 34.1 14.3 UC205 T205 0.81 
UCT205-13 13/16 5/8 25/64 2-1/64 1-1/4 3/4 2-1/64 15/32 2-63/64 3-1/2 3-13/16 1-1/4 15/16 2-7/16 1-7/8 1.3425 0.563 UC205-13 0.85 
UCT205-14 7/8 UC205-14 0.84 
UCT205-15 15/16 UC205-15 0.82 
UCT205-16 1 UC205-16 0.81 
UCT206 30 16 10 56 37 22 57 12 89 102 113 37 28 70 53 38.1 15.9 UC206 T206 1.22 
UCT206-17 1-1/16 5/8 25/64 2-7/32 1-29/64 55/64 2-1/4 15/32 3-1/2 4-1/64 4-29/64 1-29/64 1-3/32 2-3/4 2-3/32 1.5 0.626 UC206-17 1.23 
UCT206-18 1-1/8 UC206-18 1.24 
UCT206-19 1-3/16 UC206-19 1.22 
UCT206-20 1-1/4 UC206-20 1.21 
UCT207 35 16 13 64 37 22 64 12 89 102 129 37 30 78 59.5 42.9 17.5 UC207 T207 1.44 
UCT207-20 1-1/4 5/8 33/64 2-33/64 1-29/64 55/64 2-33/64 15/32 3-1/2 4-1/64 5-5/64 1-29/64 1-3/16 3-5/64 2-11/32 1.689 0.689 UC207-20 1.50 
UCT207-21 1-5/16 UC207-21 1.46 
UCT207-22 1-3/8 UC207-22 1.44 
UCT207-23 1-7/16 UC207-23 1.41 
UCT208 40 19 16 83 49 29 83 16 102 114 144 49 33 89 69 49.2 19 UC208 T208 2.40 
UCT208-24 1-1/2 3/4 5/8 3-17/64 1-15/16 1-9/64 3-17/64 5/8 4-1/64 4-31/64 5-43/64 1-15/16 1-5/16 3-1/2 2-23/32 1.937 0.748 UC208-24 2.44 
UCT208-25 1-9/16 UC208-25 2.41 
UCT209 45 19 16 83 49 29 83 16 102 117 144 49 35 87 69 49.2 19 UC209 T209 2.36 
UCT209-26 1-5/8 3/4 5/8 3-17/64 1-15/16 1-9/64 3-17/64 5/8 4-1/64 4-39/64 5-43/64 1-15/16 1-3/8 3-27/64 2-23/32 1.937 0.748 UC209-26 2.46 
UCT209-27 1-11/16 UC209-27 2.42 
UCT209-28 1-3/4 UC209-28 2.38 
UCT210 50 19 16 83 49 29 86 16 102 117 149 49 37 90 74.5 51.6 19 UC210 T210 2.43 
UCT210-29 1-13/16 3/4 5/8 3-17/64 1-15/16 1-9/64 3-17/64 5/8 4-1/64 4-39/64 5-55/64 1-15/16 1-15/32 3-35/64 2-15/16 2.571 0.748 UC210-29 2.55 
UCT210-30 1-7/8 UC210-30 2.50 
UCT210-31 1-15/16 UC210-31 2.45 
UCT210-32 2 UC210-32 2.41 
UCT211 55 25 19 102 64 35 95 22 130 146 171 64 38 106 76 55.6 22.2 UC211 T211 4.11 
UCT211-32 2 63/64 3/4 4-1/64 2-1/32 1-3/8 3-3/4 55/64 5-1/8 5-3/4 6-47/64 2-33/64 1-1/2 4-11/64 3 2.189 0.874 UC211-32 4.26 
UCT211-33 2-1/16 UC211-33 4.20 
UCT211-34 2-1/8 UC211-34 4.15 
UCT211-35 2-3/16 UC211-35 4.09 
UCT212 60 32 19 102 64 35 102 22 130 146 194 64 42 119 89 65.1 25.4 UC212 T212 4.97 
UCT212-36 2-1/4 1-17/64 3/4 4-1/64 2-1/32 1-3/8 4-1/64 55/64 5-1/8 5-3/4 7-41/64 2-33/64 1-21/32 4-11/16 3-1/2 2.563 1 UC212-36 5.10 
UCT212-37 2-5/16 UC212-37 5.02 
UCT212-38 2-3/8 UC212-38 4.95 
UCT212-39 2-7/16 UC212-39 4.88 

2 >> Advantages

MAINTENANCE Low maintenance due to its self-aligning capabilities
LUBRICATION Fast and easy re-lubrication due to a built-in lubrication hole
SELF-ALIGNMENT Rational self-alignment
LOAD Larger load carrying capacity, relubricable, longer service life of the units
SEAL Efficient, sealing ability of the units with covers is perfect
HOUSE Solid housing, provide maximum rigidity against deformation for any condition
LOCK Easy and positive locking to shaft
HEAT-TREATMENT Special heat-treatment on bearing inner ring prevent causing cracking
DEVICE Unique device to prevent bearing outer ring rotation
INTERCHANGEABILITY Complete interchangeability between bearing and housing
INSTALLATION Easy installation
POSITION Easy positioning for mounting

3 >> Manufacture Process

FACTORY WARRANTED -Granville can offers an array of tools for efficientofferthey maintenance.
-We also offer reliability systems and services to help maintenance.
-Personnel maximize operating performance and detect equipment.
-Dealing with problems before they become critical.

Advantage Manufacturing Processes& Quality Control We strictly follow the core of quality management process control:

APQP: product quality advance plHangZhou

SPC: Statistical process control

MSA: Measurement system analysis

FMEA: Analysis of potential failure modes and consequences

PPAP: Production part approval procedure

01 Heat Treatment
02 Centerless Grinding Machine 11200 (most advanced)
03 Automatic P roduction Lines for Raceway
04 Automatic P roduction Lines for Raceway
05 Ultras onic Cleaning of Rings
06 Automatic Ass embly
07 Ultras onic Cleaning of Bearings
08 Ultras onic Cleaning of Bearings
09 Measurement of Bearing Vibration (Acceleration)
10 Measurement of Bearing Vibration (Speed)
11 Laser Marking
12 Automatic Packing

4 >> Packaging

color box HangZhou, China FOB HangZhou

5 >> TANN other series of products



You May Like(No.)
1 UC
2 SA
4 H
10 UCT
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Please feel free to get information from Granville:)


Advance automatic lines
Granville takes her every effort in purchasing the most advanced bearing process equipment, CNC automatic facilities are widely used in the factory and we are keep investing to improve more.
Full range bearing & units
We provide a strong full range products, including:
Radial ball bearings
Pillow block and wide range of housed units
Electric motor and components
One-stop partnerships products
Premium Quality
Quality control from beginning
All products are manufactured exclusively by companies with ISO 9001:2008 certified Quality System which use state-of-the-art machines.The quality path starts from beginning to deliver and goods’ quality trackable.

Screw Shaft Features Explained

When choosing the screw shaft for your application, you should consider the features of the screws: threads, lead, pitch, helix angle, and more. You may be wondering what these features mean and how they affect the screw’s performance. This article explains the differences between these factors. The following are the features that affect the performance of screws and their properties. You can use these to make an informed decision and purchase the right screw. You can learn more about these features by reading the following articles.


The major diameter of a screw thread is the larger of the 2 extreme diameters. The major diameter of a screw is also known as the outside diameter. This dimension can’t be directly measured, but can be determined by measuring the distance between adjacent sides of the thread. In addition, the mean area of a screw thread is known as the pitch. The diameter of the thread and pitch line are directly proportional to the overall size of the screw.
The threads are classified by the diameter and pitch. The major diameter of a screw shaft has the largest number of threads; the smaller diameter is called the minor diameter. The thread angle, also known as the helix angle, is measured perpendicular to the axis of the screw. The major diameter is the largest part of the screw; the minor diameter is the lower end of the screw. The thread angle is the half distance between the major and minor diameters. The minor diameter is the outer surface of the screw, while the top surface corresponds to the major diameter.
The pitch is measured at the crest of a thread. In other words, a 16-pitch thread has a diameter of 1 sixteenth of the screw shaft’s diameter. The actual diameter is 0.03125 inches. Moreover, a large number of manufacturers use this measurement to determine the thread pitch. The pitch diameter is a critical factor in successful mating of male and female threads. So, when determining the pitch diameter, you need to check the thread pitch plate of a screw.


In screw shaft applications, a solid, corrosion-resistant material is an important requirement. Lead screws are a robust choice, which ensure shaft direction accuracy. This material is widely used in lathes and measuring instruments. They have black oxide coatings and are suited for environments where rusting is not acceptable. These screws are also relatively inexpensive. Here are some advantages of lead screws. They are highly durable, cost-effective, and offer high reliability.
A lead screw system may have multiple starts, or threads that run parallel to each other. The lead is the distance the nut travels along the shaft during a single revolution. The smaller the lead, the tighter the thread. The lead can also be expressed as the pitch, which is the distance between adjacent thread crests or troughs. A lead screw has a smaller pitch than a nut, and the smaller the lead, the greater its linear speed.
When choosing lead screws, the critical speed is the maximum number of revolutions per minute. This is determined by the minor diameter of the shaft and its length. The critical speed should never be exceeded or the lead will become distorted or cracked. The recommended operational speed is around 80 percent of the evaluated critical speed. Moreover, the lead screw must be properly aligned to avoid excessive vibrations. In addition, the screw pitch must be within the design tolerance of the shaft.


The pitch of a screw shaft can be viewed as the distance between the crest of a thread and the surface where the threads meet. In mathematics, the pitch is equivalent to the length of 1 wavelength. The pitch of a screw shaft also relates to the diameter of the threads. In the following, the pitch of a screw is explained. It is important to note that the pitch of a screw is not a metric measurement. In the following, we will define the 2 terms and discuss how they relate to 1 another.
A screw’s pitch is not the same in all countries. The United Kingdom, Canada, and the United States have standardized screw threads according to the UN system. Therefore, there is a need to specify the pitch of a screw shaft when a screw is being manufactured. The standardization of pitch and diameter has also reduced the cost of screw manufacturing. Nevertheless, screw threads are still expensive. The United Kingdom, Canada, and the United States have introduced a system for the calculation of screw pitch.
The pitch of a lead screw is the same as that of a lead screw. The diameter is 0.25 inches and the circumference is 0.79 inches. When calculating the mechanical advantage of a screw, divide the diameter by its pitch. The larger the pitch, the more threads the screw has, increasing its critical speed and stiffness. The pitch of a screw shaft is also proportional to the number of starts in the shaft.

Helix angle

The helix angle of a screw shaft is the angle formed between the circumference of the cylinder and its helix. Both of these angles must be equal to 90 degrees. The larger the lead angle, the smaller the helix angle. Some reference materials refer to angle B as the helix angle. However, the actual angle is derived from calculating the screw geometry. Read on for more information. Listed below are some of the differences between helix angles and lead angles.
High helix screws have a long lead. This length reduces the number of effective turns of the screw. Because of this, fine pitch screws are usually used for small movements. A typical example is a 16-mm x 5-inch screw. Another example of a fine pitch screw is a 12x2mm screw. It is used for small moves. This type of screw has a lower lead angle than a high-helix screw.
A screw’s helix angle refers to the relative angle of the flight of the helix to the plane of the screw axis. While screw helix angles are not often altered from the standard square pitch, they can have an effect on processing. Changing the helix angle is more common in two-stage screws, special mixing screws, and metering screws. When a screw is designed for this function, it should be able to handle the materials it is made of.


The diameter of a screw is its diameter, measured from the head to the shaft. Screw diameters are standardized by the American Society of Mechanical Engineers. The diameters of screws range from 3/50 inches to 16 inches, and more recently, fractions of an inch have been added. However, shaft diameters may vary depending on the job, so it is important to know the right size for the job. The size chart below shows the common sizes for screws.
Screws are generally referred to by their gauge, which is the major diameter. Screws with a major diameter less than a quarter of an inch are usually labeled as #0 to #14 and larger screws are labeled as sizes in fractions of an inch. There are also decimal equivalents of each screw size. These measurements will help you choose the correct size for your project. The screws with the smaller diameters were not tested.
In the previous section, we described the different shaft sizes and their specifications. These screw sizes are usually indicated by fractions of an inch, followed by a number of threads per inch. For example, a ten-inch screw has a shaft size of 2” with a thread pitch of 1/4″, and it has a diameter of 2 inches. This screw is welded to a two-inch Sch. 40 pipe. Alternatively, it can be welded to a 9-inch O.A.L. pipe.


Screws come in a wide variety of sizes and shapes, from the size of a quarter to the diameter of a U.S. quarter. Screws’ main function is to hold objects together and to translate torque into linear force. The shape of a screw shaft, if it is round, is the primary characteristic used to define its use. The following chart shows how the screw shaft differs from a quarter:
The shape of a screw shaft is determined by 2 features: its major diameter, or distance from the outer edge of the thread on 1 side to the inner smooth surface of the shaft. These are generally 2 to 16 millimeters in diameter. Screw shafts can have either a fully threaded shank or a half-threaded shank, with the latter providing better stability. Regardless of whether the screw shaft is round or domed, it is important to understand the different characteristics of a screw before attempting to install it into a project.
The screw shaft’s diameter is also important to its application. The ball circle diameter refers to the distance between the center of 2 opposite balls in contact with the grooves. The root diameter, on the other hand, refers to the distance between the bottommost grooves of the screw shaft. These are the 2 main measurements that define the screw’s overall size. Pitch and nominal diameter are important measurements for a screw’s performance in a particular application.


In most cases, lubrication of a screw shaft is accomplished with grease. Grease is made up of mineral or synthetic oil, thickening agent, and additives. The thickening agent can be a variety of different substances, including lithium, bentonite, aluminum, and barium complexes. A common classification for lubricating grease is NLGI Grade. While this may not be necessary when specifying the type of grease to use for a particular application, it is a useful qualitative measure.
When selecting a lubricant for a screw shaft, the operating temperature and the speed of the shaft determine the type of oil to use. Too much oil can result in heat buildup, while too little can lead to excessive wear and friction. The proper lubrication of a screw shaft directly affects the temperature rise of a ball screw, and the life of the assembly. To ensure the proper lubrication, follow the guidelines below.
Ideally, a low lubrication level is appropriate for medium-sized feed stuff factories. High lubrication level is appropriate for larger feed stuff factories. However, in low-speed applications, the lubrication level should be sufficiently high to ensure that the screws run freely. This is the only way to reduce friction and ensure the longest life possible. Lubrication of screw shafts is an important consideration for any screw.

China factory Slot spacing and width interchangeable UCT 204 take-up bearing units with competitive units   wholesaler China factory Slot spacing and width interchangeable UCT 204 take-up bearing units with competitive units   wholesaler

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