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Dental hand piece bearings
Dental hand piece bearings
  Product  Information

Material of the rings is 9Cr18Mo refined stainless steel; rollers adopt AISI440C refined stainless steel. Material for retainers is imported polyimide from America. The bearings possess characters of excellent safety and durability. Under 200-250KPa air pressure, the bearing's rotating speed can reach 350,000-450,000rpm; Noise can be controlled within 65db. The service life can reach over 6 months under normal working conditions.
Designs include radial ball bearings and angular contact ball bearings. Please look at the table below for details.

Main dimensions(mm) Inch Size(inch)

Features

Radial Ball Bearing

Angular Contact Bearing*

Bore
(d)
O.D.
(D)
Width
(B)
3.175
(
0.125
)
6.35
(
0.250
)
2.38
(
0.0937
)
Smooth
SR144TL
SR144TLZ
SR144TLZ1
SR144K1TL
SR144K2TL
Flanged
SFR144TL
SFR144TLZ
SFR144TLZ1
SFR144K1TL
SFR144K2TL
Groove
SR144TLK
SR144TLKZ
SR144TLKZ1
SR144K1TLK
SR144K2TLK
2.38/2.78
(bore)
(
0.0937
/
0.1094
)

Unique
SR144
TLZ1W02
SR144
TLKZW02
SR144
TLKZ1W02
SR144
K1TLKZ1W02
SR144
K2TLKZ1W02
3.175
(
0.125
)
6.35
(
0.250
)
2.78
(
0.1094
)
Smooth
 
 
 
 
 
SR144
TLW
SR144
TLZW
SR144
TLZ1W
SR144
K1TLW
SR144
K2TLW
Flanged
SFR144
TLW
SFR144
TLZW
SFR144
TLZ1W
SFRF144
K1TLW
SFR144
K2TLW
Groove
SR144
TLKW
SR144
TLKZW
SR144
TLKZ1W
SR144
K1TLKW
SR144
K2TLKW
3.175
(
0.126
)
6.35
(
0.251
)
2.78
(
0.1094
)
Unique
SFR144
TLGZW
SFR144
TLGZ1W
SFR144
K1TLGZW
SFR144
K2TLGZW
SFFR144
TLW
SFFR144
TLZW
SFFR144
TLZ1W
SFFR144
K1TLW
SFFR144
K2TLW
1.9/1.6
(bore)
(
0.0748
/
0.0623
)

SR144
TLW1.9

3.175
(
0.126
)

7.938
(
0.3125
)

3.15
(
0.124
)
/
2.78(
0.1094
)

R2-5 Serie

R2-5TLZ
(2.78)

R2-5TLZ

R2-5TLZZ

* Types are angualr contact ball bearings; K1 means inner ring seperable; K2 is outer ring seperable.

Introduction:

1?It is 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 avoide the damage of rollway and balls.

2?After fitting the bearing into tubine shaft they should be clear and instilled special lubricant.(Ethanol must not be used ).

3?After high steam sterilized the Dental High Handpiece/driller should be jetted some lubricant into the air inlet before used and so that bearing could be used longer.

4?To keep operating stability,the preload spring stress of bearing should be controlled under 1.20.2N.

Material of the rings is 9Cr18Mo refined stainless steel; rollers adopt AISI440C refined stainless steel. Material for retainers is imported polyimide from America. The bearings possess characters of excellent safety and durability. Under 200-250KPa air pressure, the bearing's rotating speed can reach 350,000-450,000rpm; Noise can be controlled within 65db. The service life can reach over 6 months under normal working conditions.
Designs include radial ball bearings and angular contact ball bearings. Please look at the table below for details.

Main dimensions(mm) Inch Size(inch)
Features
Radial Ball Bearing
Angular Contact Bearing*
Bore
(d)
O.D.
(D)
Width
(B)
3.175
(
0.125
)
6.35
(
0.250
)
2.38
(
0.0937
)
Smooth
SR144TL
SR144TLZ
SR144TLZ1
SR144K1TL
SR144K2TL
Flanged
SFR144TL
SFR144TLZ
SFR144TLZ1
SFR144K1TL
SFR144K2TL
Groove
SR144TLK
SR144TLKZ
SR144TLKZ1
SR144K1TLK
SR144K2TLK
2.38/2.78
(bore)
(
0.0937
/
0.1094
)

Unique
SR144
TLZ1W02
SR144
TLKZW02
SR144
TLKZ1W02
SR144
K1TLKZ1W02
SR144
K2TLKZ1W02
3.175
(
0.125
)
6.35
(
0.250
)
2.78
(
0.1094
)
Smooth
 
 
 
 
SR144
TLW
SR144
TLZW
SR144
TLZ1W
SR144
K1TLW
SR144
K2TLW
Flanged
SFR144
TLW
SFR144
TLZW
SFR144
TLZ1W
SFRF144
K1TLW
SFR144
K2TLW
Groove
SR144
TLKW
SR144
TLKZW
SR144
TLKZ1W
SR144
K1TLKW
SR144
K2TLKW
3.175
(
0.126
)
6.35
(
0.251
)
2.78
(
0.1094
)
Unique
SFR144
TLGZW
SFR144
TLGZ1W
SFR144
K1TLGZW
SFR144
K2TLGZW
SFFR144
TLW
SFFR144
TLZW
SFFR144
TLZ1W
SFFR144
K1TLW
SFFR144
K2TLW
1.9/1.6
(bore)
(
0.0748
/
0.0623
)
SR144
TLW1.9
3.175
(
0.126
)
7.938
(
0.3125
)
3.15
(
0.124
)
/
2.78(
0.1094
)
R2-5 Serie
R2-5TLZ
(2.78)
R2-5TLZ
R2-5TLZZ
* Types are angualr contact ball bearings; K1 means inner ring seperable; K2 is outer ring seperable.
Introduction:
1?It is 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 avoide the damage of rollway and balls.
2?After fitting the bearing into tubine shaft they should be clear and instilled special lubricant.(Ethanol must not be used ).
3?After high steam sterilized the Dental High Handpiece/driller should be jetted some lubricant into the air inlet before used and so that bearing could be used longer.
4?To keep operating stability,the preload spring stress of bearing should be controlled under 1.20.2N.
 
 
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