Freerun Group are professional manufacturer and exporter of Dental Bearing . Our Dental Bearing is good in quality and competitive in price. We supply OEM service of Dental Bearing for you. We would manufacture Dental Bearing following your specific requirement.

1. Dental Bearing Type:

S type (Smooth) Smooth Outer Ring

G type(Groove) With groove in outer ring

F type (Flanged) With Flanged in outer ring 

U type(Flanged Unique),With flanged and Uniquie in outer ring

2. Material of Bearing Parts:

3. Dental Bearings Sizes and description:

1）Popular R144 Sizes

2) Other sizes dental bearings

3）Retainers(Cages)

Explanation of feature:

N: Ceramic Si3N4 Ball   ( Absence of symbol-refined stainless steel)

Smooth: Means the outer ring is plain,straight

Flange: Means: Flange in out ring

Flanged Unique: Flange bearing with a unique groove in outer ring

Stepped: with step in outer ring

Suffix Explanation: 

R144: Basic of Bearing Number

S: Stainless Steel 440C( 9Cr18Mo)

N: Ceramic Si3N4 Ball   ( Absence of symbol-refined stainless steel)

F: Flange Out Ring

   As width of outer ring is 2.38mm,The width of flange is 0.60 mm(0.0236")

   As width of outer ring is 2.779 mm,The width of flange is 0.80mm(0.0315")

G:Outer ring with a unigue groove

    As outer ring with unique groove,the width of flange is 0.42 mm(0.01654")

K: Stepped Out Ring

K1: Angular contact ball bearing of inner ring with contact angle

K2: Angular contact ball bearing of outer ring with contact angle

      Absence of symbol--Radial Ball Bearing

FF: Double flange on the outer rings.

R: Inch Series

TL:Torlon(Polyamide Cage)

TI:Phenolic (Textolite)

TP: Polyimide Cage

Z: one side metal shield 

   Z1:Shield & Outer ring is combined,Also known as integral shield.(Golden Shield is available)

  Absence of symbol is without any shields

W: Width of outer and inner ring is 2.779. ( Absence of symbol-Width of outer and ring:2.381 mm)

   W01: Width of outer ring is 2.779, Width of Inner Ring is 2.381

   W02: Width of outer ring is 2.381, Width of Inner Ring is 2.779

(8): 8 Balls ( Absence of symbol--7 Balls)

ABEC-5:Precision Grade: ABEC 5, ABEC 5P, used for low speed dental handpiece ,Straight handpieces,Contra-angle Handpieces.

ABEC-7:Precision Grade: P4, ABEC 7P (=JIS4), used for high speed dental handpiece

A/C: Angular Contact Bearings

Crown Cage/Retainer for Radial Ball Bearings

Ring Cage/Retainer for Angular Contact Ball Bearings

Item Description:

1)S-Rings and balls are made in 9Cr18Mo stainless steel(AISI440C)

2)F-With capped edge.

3)R144-Basic bearing code(inch)

4)K1-Angular contact bearing with stepped inner ring,

   K2 - Angular contact bearing with counter bored outer ring,

5)Material of cage

   Tl-(polyimide, black)

   Ti-Textolite

   Ta-(polyimide, yellow)

6)K -outer rings with stage

   G-outer ring with recess

7)Z -with single shield

8)W -width of both inner and outer ring are 2.78mm.

9)N- ball material is si3n4.

   Absende of symbol- ball material is 9cr18mo

10)Absende of symbol -7 balls are taken, 8 balls are taken.

4. Product Specifications:

1)Dental Bearing of high precision level P4 (ABEC 7),usable for various brands of high-speed dental turbine handpieces

2)Rotating speed 350,000-450,000 rpm under air-pressure of 200-250Kpa

3)Working life for about six months under the normal operation

4)Very less vibration, Very less noise, Antirust, Corrosion resistant

5)High temperature resistant for disinfection

6)The ceramic balls used in some Freerun dental bearings are harder, lighter and more wear resistant than the stainless steel versions used by other bearing manufacturers. Ceramic balls generate less centrifugal force at the high speeds dental handpieces operate, reducing wear on the bearing and the production of wear particles, which in turn increases lubricant life.

5. Freerun Primary Competitive Advantages:

· About 10 years dental bearing manufacturing experience

· 52 Professional skill, 8 Experienced technical staff

· Strict control system, High-quality assurance

· High quality ensurence, prices competitive

· Leading technology and technique

· Sincere and considerate service

6. Applications :

Our dental bearings can be used at the following brands handpieces:

7. How to use correctly:

1). It is the best that the interference fit between bearing bore and turbine shaft is under  0.5um-1.5um.when putting turbine shaft into bearing bore, the pressure should be forced on the face of inner ring to avoid the damage of rollway and balls.

2). After fitting the bearing into turbine shaft they should be instilled special lubricant (ethanol must not be used)

3). After high stean sterilized the dental high speed handpiece should be jetted some lubricant into the air inlet before used and so that bearing could be used longer time.

4). To keep operating stability, the preload spring stress of bearing should be controlled under 1.2 +/- 0.2N.