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Drill dentali

Drill dentali

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

s type.pngs type dental bearing.png

G type(Groove) With groove in outer ring

G type(Groove) With groove in outer ring.pngG type(Groove) With groove in outer ring2.png

F type (Flanged) With Flanged in outer ring 

F type (Flanged) With Flanged in outer ring.pngF type (Flanged) With Flanged in outer ring2.png

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

U type(Flanged Unique),With flanged and Uniquie in outer ring.pngU type(Flanged Unique),With flanged and Uniquie in outer ring2.png


2. Material of Bearing Parts:


 Bearing Part

 Material 

 Characteristics

 Outer ring

 Refined Stainless Steel

 9Cr18Mo (AISI440C)

 Antirust, Corrosion resistant,

 Hardness of Freezing Treatment

 Inner ring

 Refined Stainless Steel

 9Cr18Mo (AISI440C)

 Antirust, Corrosion resistant,

 Hardness of Freezing Treatment

 Shield

 Refined Stainless Steel

 Corrosion resistant, Antirust

 Ball

 Refined Stainless Steel 9Cr18Mo

 Antirust, Corrosion resistant

 Super-hard Ceramic Si3N4

 Abrasion resistant,

 Corrosion resistant

 Cage

 Torlon

 High strength,

 Ant-fraying, Self-lubricating

Polyamide-imide

High strength,

 Ant-fraying, Self-lubricating

 Textolite (Phenolic)

 High strength,

 Ant-fraying, Self-lubricating

 

3. Dental Bearings Sizes and description:


1)Popular R144 Sizes


Size:Bore:3.175(0.125)OD:6.35(0.250)width:2.381(0.0937)FeatureITEMPlastic Tube Packing to delivery to wholesaler and handpiece factoryVaccuum Poly Bag Packing for Retainer & Wholesaler for Repair or aftermartet
TP(Polyimide Cage)TL(Torlon Cage)TI(Textolite Cage)TP(Polyimide Cage)TL(Torlon Cage)TI(Textolite Cage)
SS BallsSI3N4 BallsSS BallsSi3N4 BallsSS BallsSi3N4SS BallsSI3N4 BallsSS BallsSi3N4 SS BallsSi3N4
SmoothSR144TL











SR144TLZ











SR144TLN 











SR144TLZN











FlangedSFR144TL











SFR144TLZ











SFR144TLN











SRF144TLZN











SteppedSR144TLK











SR144TLKZ











SR144TLKN











SR144TLKZN












Size:Bore:3.175(0.125)OD:6.35(0.250)Width:2.779(0.1094)FeatureITEMPlastic Tube Packing to delivery to wholesaler and handpiece factoryVaccuum Poly Bag Packing for Retainer & Wholesaler for Repair or aftermartet
TP(Polyimide Cage)TL(Torlon Cage)TI(Textolite Cage)TP(Polyimide Cage)TL(Torlon Cage)TI(Textolite Cage)
SS BallsSI3N4 BallsSS BallsSi3N4 BallsSS BallsSi3N4SS BallsSI3N4 BallsSS BallsSi3N4 SS BallsSi3N4
SmoothSR144TLW











SR144TLZW











SR144TLNW











SR144TLZNW











FlangedSFR144TLW











SFR144TLZW











SFR144TLNW











SRF144TLZNW











Flanged UnigueSFR144TLGW











SFR144TLGZW











SFR144TLGNW











SRF144TLZGNW











SteppedSR144TLKW











SR144TLKZW











SR144TLKNW











SR144TLKZNW












2) Other sizes dental bearings


Stainless BallsCeramic Si3N4  ( N )0.125 inch=3.175mm, 0.25 inch=6.35mm,0.1094 inch=2.779 mm,0.0937=2.38 mm
Bearing NumberBearing NumberDimension
SR2-5TLSR2-5TLN3.175*7.938*2.779
SR2-5TLZSR2-5TLZN3.175*7.938*2.779
SR2-5TLZZSR2-5TLZZN3.175*7.938*2.779
SR2-5TLWSR2-5TLWN3.175*7.938*3.571
SR2-5TLZWSR2-5TLZWN3.175*7.938*3.571
SR2-5TLZZWSR2-5TLZZWN3.175*7.938*3.571
SR2-D6TLSR2-D6TLN3.175*6*2
SR2-D7TLSR2-D7TLN3.175*7*2
SR2TLYZZSR2TLYZZN3.175*7.5*7.0*2.779
SR2TLYZZ1SR2TLYZZ1N3.175*7.5*7.0*2.779
SMR74TLSMR74TLN4X7X2 mm
SMR74TLZSMR74TLZN4x7x2 MM
SMR74TLW1.6SMR74TLW1.6N4X7X1.6 MM
SR133TLSR133TLN2.38*4.763*1.588
SR133TLW2.38SR133TLW2.38N2.38*4.763*2.38
SR133-TLW5SR133-TLW5N2.35x5x1.5
SR133-TLW5.5d2SR133-TLW5.5d2N2.35x5.5x2 mm
S683TLS683TLN3X8X2 MM
S683TLW2.5S683TLW2.5N3X8X2.5 MM
S684TLS684TLN4X9X2.5
S682TLS682TLN2X5X1.5
SMR63TLSMR63TLN3X6X2 mm
SMR85TLZZSMR85TLZZN5X8X3 mm
S694TLZZS694TLZZN4X11X4 mm


low speedSizes:low speedSizes:low speedSizes:
D-012*4*1.5D-183*8*3D-354*10*4
D-022*5*1.5D-193*8*4D-364.763*9.525*3.175
D-032*5*2D-203*10*4D-375*8*2
D-042*4*1.2D-213.175*6.35*2.38D-385*8*2.5
D-052*6*2.3D-223.175*6.35*2.78D-395*8*3
D-062*6*3D-233.175*7.938*3.571D-405*10*3
D-072.35*5.5*2D-244*8*2D-415*10*4
D-082.35*5.5*2.5D-254*8*3D-425*11*4
D-092.38*4.76*1.588D-264*7*2D-436*12*4
D-102.38*4.76*2.38D-274*7*1.6D-446.35*12.7*4.763
D-112.38*7.938*3.571D-284*7*2.5D-457*14*5
D-123*6*2D-294*9*4D-464.763*12.7*4.978
D-133*6*2.5D-304*11*4D-474*12*4
D-143*7*2D-314*6.5*1.3D-485*16*5
D-153*7*2.5D-324.76*7.938*3.175D-4910*15*3
D-163*7*3D-338*14*3.5D-508*16*6
D-173*6.5*2.38D-348*14*4


3)Retainers(Cages)




Retainer also known as bearing cages.FRC dental bearings use Torlon 4301 PAI, or Phenolic or Polyimide.


Retainers.png

Torlon Retainers

Torlon PAI (Bearing Grade) offers a very low expansion rate, low coefficient of friction and exhibits little or no slip-stick in use. This grade excels in severe service wear applications such as non-lubricated bearings, seals, bearing cages (bearing retainers) and in high temperature environments.

Retainers2.png

Phenolic Retainers

They are used for retainer cages for steel ball bearings especially when exposed to high-humidity environments. The phenolic does well in where lubricant is scarce as it has a wicking effect to retain and attract lubricants when present.

Retainers3.png

Polyimide Retainers

Ease of machining and less prone to developing swears during small diameter drilling operations make it a good choice for retainers used in ball bearings. They are many proprietary grades and variations of polyimide available today.


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:


· Abu-Handpieces

· Adec

· Alpha Air

· Banner

· Beaver

· Bien Air

· Bordon

· Bravo Bedetrice

· Buffalo

· DME

· Dabi-Atlante

· Dynadent

· Elco - Austria

· Falcon

· Faro

· Futura

· Gamborini

· Impact-Air

· KMD

· Kavo

· Kool Torque

· Lares

· MTC

· MTI

· Micro Mega

· Midwest

· Morita

· Muss

· NSK

· Royal - Handpieces

· SS White

· Shofu

· Siemens

· Star

· Starflite

· TKD

· Torx

· W and H

· Yoshida

 

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.

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