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Quick Details

  • Structure: Deep Groove
  • Type: Ball
  • Brand Name: ZYSL,LLH
  • Bore Size: 0 - 450 mm
  • Outside Diameter: 0 - 550 mm
  • Model Number: plastic U groove ball bearing
  • Precision Rating: P0 P6 P5 P4 P2
  • Seals Type: OPEN ZZ 2RS RS
  • Number of Row: Single Row
  • Place of Origin: Shandong, China (Mainland)
  • Certificate: ISO9001:2008
  • Service: OEM Customized Services
  • Cage: Nylon,Chrome steel,Plastic
  • Vibration: Z1V1 Z2V2 Z3V3 Z4V4
  • seal: chrome steel
  • Material: POM
  • Application: for rope
  • Feature: Stable Performance:low Voice
  • Lubrication: Dry
  • Balls: Plastic Steel Ceramic

Packaging & Delivery

Packaging Details A: barreled package+outer carton+pallets
B: single box+outer carton+pallets
C: tube package+middle
Delivery Time Shipped in 2 days after payment
Product Description

OEM customized Plastic U grooved pulley wheel for rope factory

 A part of our products:


A pulley roller is a round or cylindrically shaped roller used as the axle of a pulley system. Most often, these types of pulleys are seen on devices such as conveyor belts, treadmill machines, and many other machines in the manufacturing and industrial fields. When used in a machine, this component must be strong, have high wear resistance, and have low friction coefficients. Pulley rollers are built to withstand extreme temperatures and provide a reduction in noise levels, which is a benefit in industrial fields where workers’ hearing must be protected. Rollers are used in household appliances as well.


 Product feature:

Miniature deep groove ball bearing type has the metric 68 series, 69 series, 60 series, etc., inch on a total of 6 R series, based on this, also can be divided into with ZZ steel dust cover bearing series, rubber sealing ring with RS miniature bearing series, teflon bearings seals series and flanged penal series and so on.  


The main purpose:

Miniature bearing is suitable for all kinds of industrial equipment, small rotary motor of high speed low noise field, such as:

Office equipment, micro motor, instrument, laser engraving, small clock, soft drive, pressure rotor, dental drill, drive motor, stepping motor, VCR magnetic drum, toy models, computer cooling fan, paper, fax machine, and so on related areas.



Types of deep groove ball bearing:


1, single row deep groove ball bearings
2, single row deep groove ball bearings with dust cover
3, with dust cover, seal ring of single row deep groove ball bearings
4, the outer ring on the stopper groove and snap ring of single row deep groove ball bearings
5, deep groove ball bearings with filling slots
6, double row deep groove ball bearings


Pictures show

In troduction of POM plastic bearing:

POM plastic bearings , PP plastic bearing POM and PA materials with good mechanical

strength and wear resistance , suitable for the production of more sophisticated plastic

bearings, working temperature from -60 °C ~ 100 °C, high strength and smooth surface ,

basically does not appear tension , its good self-lubricating properties and low coefficient

of friction , while maintaining the traditional advantages of plastic bearings on the basis

of precise and can be used in high speed operation . 

(1) rigidity, high hardness , even at low temperatures , high impact strength 
(2) good excellent elasticity , creep resistance ;
(3) high thermal stability and very good dimensional stability ;
(4)good sliding properties , wear resistance ;
(5) physiologically inert , suitable for contact with food.
(6) Even in strong acid and strong oxidizing agents, poor paint adhesion
Main purpose :
Mechanical and electrical equipment , fitness equipment , food machinery , furniture and

decorating materials

HDPE, PP, UPE material has proven to be relatively weak acid cross- environment (30%

Cucl2 solution and 30% NaoH solution tested OK) it is suitable for most acid / base / salt

/ solvent / oil / gas and seawater corrosion environment. With general plastic bearings

oil-free self -lubricating, anti-magnetic insulation properties, but lower mechanical strength,

easily deformed. In comparison, the use of UPE material will have better strength, low

friction characteristics and low temperature application characteristics (down to -150 °C).

(1) good corrosion resistance at a certain temperature and concentration ability of various

corrosive media and organic media
(2) high mechanical strength , high toughness can be maintained cutting at liquid nitrogen

temperature (-196 °C)
(3)good self- lubricating, wear high
(4) Strong anti- adhesion
(5) low water absorption, excellent electrical insulation
(6) good resistance to high energy radiation
Main purpose :
Mechanical and electrical equipment , fitness equipment , food machinery , furniture and

decorating materials

PTFE high-temperature corrosion-resistant plastic bearings
PTFE and PI as a new plastic material , proved to be all known engineering plastics and high

temperature mechanical strength, dimensional stability and better performance , in which

long-term use temperature of PTFE 260 °C, PI long-term use temperature is as high as

300 °C , and which has excellent corrosion resistance. 


Related models and specifications

ModelWeightSize (mm)

≈ (g)dwdDCB
LFR 50/5-4 N8451675
LFR 50/5-58551775
LFR 50/5 N8651775
LFR 50/8 N256824117
LFR 50/8-8 N25882411
Bearing No.MassDimension(mm)Load
Bearing No.≈(g)dwdDCBArsCw(KN)Cow(KN)Fr perm(KN)
LFR 50/4 NPP3.55413678.
LFR 50/5-4 KDD7.545167890.21.20.861.3
LFR 50/5-4 NPP7.545167890.21.20.861.3
LFR 50/5 KDD865177810.
LFR 50/5 NPP865177810.
LFR 50/8 KDD2468241111140.33.672.281.3
LFR 50/8 NPP2468241111140.33.672.281.3
LFR 50/8-8 KDD248824111114.750.33.672.281.3
LFR 50/8-8 NPP248824111114.750.33.672.281.3
LFR 30/8 KDD3110826.8111316.70.33.672.281.3
LFR 30/8 NPP3110826.8111316.70.33.672.281.3
LFR 5201 KDD6810123515.915.920.650.
LFR 5201 NPP6810123515.915.920.650.
LFR 5301 KDD1301012421919240.6137.77.5


Introduction of deep groove ball bearings:


Deep groove ball bearing mainly take radial load as well as take moderate axial load. With less coefficient of friction, high limiting speed, large size range and varations of structure, they are suitable for precision instruments, low noise motors, automobiles,motorcycles,and other common machinery, as a widely used type of bearings in machinery industry.


Sealed deep groove ball bearings
Deep groove ball bearings with sealing disks (contacting gaskets) or covering disks (non-contacting gaskets) allow simple designs. Bearings are offered both with one and two sealing or covering disks. Bearings with two-side gaskets are filled with top quality grease. Sealed bearings can be used in a temperature range from – 30 °C to max. 110 °C (short term) for contacting and up to max. 120 °C for non-contacting gaskets. One should note here, that the period of grease use will reduce at a permanent temperature of > 70 °C. Special greases are offered for such cases.

Deep groove ball bearings with annular groove in outer ring
Deep groove ball bearings with annular groove in the outer ring simplify the design in many cases because they can be fixed simply by a snap ring and axially in the housing to save space. These bearings with or without snap ring are available only on request.

Deep groove ball bearings tested for noise
As standard, deep groove ball bearings are subjected to noise tests up to bore parameter 12. In addition, a 100 % rolling test is carried out. These bearings can also be subjected to a noise test if required by the customer (on request only).

Deep groove ball bearings without cage suffix are provided with a steel sheet cage. Differing cage designs are indicated at the bearing type as bearing symbol (suffix). Deep groove ball bearings with cages of fiber-glass reinforced polyamide 66 are suitable for temperatures of maximum 120 °C for longer periods of time. When using oil lubrication (for non-sealed bearings), the additives contained in the oil may affect the period of use of the cage if the temperature exceeds 100 °C for a longer period of time. In addition, deep groove ball bearings with brass cage and current-insulated designs are available on request.


Single-row deep groove ball bearings accept radial and axial forces and can thus be used in a wide range of applications. They have a simple design, are self-retaining, suitable for high up to very high speeds and resistant in operation and during maintenance and they are offered at a very favorable price. Due to these characteristics, self-aligning deep groove ball bearings are the anti-friction bearings which are used most. The standard version of SLF deep groove ball bearings is provided with a recess for inserting sealing and/or covering disks. The only exception is series 160... . Here, only a version without sealing and/or covering disk can be supplied. (Exception 16006.2ZR)

Company Information

Company Introdurction

Jinan Sheng Lei bearing Co., Ltd. is located in the "Spring City" Jinan. We Insist the integrity and pragmatic, win-win business philosophy, adhere to the people-oriented, advancing enterprise spirit and regard "quality first, customers utmost" as enterprise concept. Our company has established a professional sales network to help customers get products information at the first time. Our products are exported to many countries now, we have won good reputation and feedbacks from our customer. We offer high quality products with reasonable price and short delivery time.

Company Show



Certificate: ISO 9001:2008

The production process:

Trade Shows


Participate in the exhibition: 

Customer visition:

Packaging & Shipping


A.tube package + outer carton + pallets
B.single box + outer carton + pallets
C.tube package + middle box + outer carton + pallets
D.According to your request.


A: 30% T/T in advance .70% against copy of B/L

B.30% T/T in advance .70% against L/C at sight

C.Western union


F:50% in advance,the balance should be paid after seeing the picture of total goods.

Our Services

Why us

1.High speed, High Precision, Low Noise, Long Service Life
2.Wide Array of Applications
3.Large Inventories
4.Small order accept
5.Competitive Prices and High Quality
6.Various Brands
7.Require little maintenance 
8. OEM is supported 
9. Our company insists on the "quality first, credit first" business ideas and our product specification is well-founded. We have a good reputation in the international market by our perfect service and sufficient supply.




1. I couldn’t find a design to fit my application in your catalog.

Can you help me design a bearing?

Yes, technical expertise is available to assist you with engineering design

for custom products. Available options include, but are not limited to,

custom rings, retainers, balls, shields, lubricants, and packaging.

We look forward to working with you to satisfy your rotary motion


2. What causes bearing noise?

Bearing noise is a function of both the bearing and the way it is used.

Some external factors that affect bearing noise include lubricant type,

excessive bearing load, and improper installation. Once the abnormal

noise occurred, you can contact our engineers, we will help you find

the reasons and provide the appropriate solutions.

3 How long is your delivery term?

Our standard product delivery term is normally 30 days. A new product

development cycle is 60 days in normal. Under normal circumstances, there

are standing stock for regular types. You can email us to learn more details.



4.  Where is your port of shipment located?

Our main port of shipment is Guangzhou port, and we may operate at other

ports if required by the customer.



Contact person:

Any questions, please don't hesitate to contact us!


Welcome your cooperation !
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