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SF-1 Series
SF-2 Series
JF Series
JDB Series
FB Series
FZ Series
FD Series
FR Series
FU Series




SF-1T GEAR PUMP BUSHING


Structure

1.PTFE with lead 0.01~0.03mm
2.Porous bronze 0.2~0.3mm
3.Steel backing 0.7~2.3mm
4.Tin-plating 0.005mm or copper plating 0.008mm
SF-1T is composed of a specially designed surface layer of PTFE formulations and is specifically applied for the high PV bushes of gear oil pumps. It is to be used in hydroid manic or boundary lubricating condition of medium or high pressure gear oil pumps such as P=16-25Mpa, V=3.5-5m/s. it shows the benefit of low friction coefficient, wear resistant and anti-impact properties. At hydrod ynamic lubrication, the PV limit reaches to 120N/mm2.m/s. It is a best choice for the bushes of various kinds of gear pumps as well as plunger pumps, vane pumps and so on.


Tech.data
Load capacity 140N/m㎡
Temperature limit -195℃~＋280℃
Speed limit 10m/s
Friction clef 0.03-0.18
PV limit (dry) 4.3N/m㎡.m/s
PV limit (oil) 60N/m㎡.m/s

Chemical characteristics
in
air
in
acuum
in
water
in
vapor
weak
acid
medium
acid
strong
acid
in
alkali
OK
OK
OK
OK
BAD
NO
NO
OK

Physical characteristics
load capacity
PV　limit
speed limit
(inoil)
m/s
Temp. limit
(℃)
friction coef.
thermal
conductivity (WMK)
linear
expansion
static N/m㎡
dynamic N/m㎡
oscillating N/m㎡
oil
N/m㎡
.m/s
dry
N/m㎡
.m/s
250
140
60
60
4.3
10
-195℃~
+260℃
0.03-0.18
13
11﹡10﹣6﹡K﹣1

Friction & wear test
time
test condition
friction
coef.
temp.
(℃ )
wear
(mm)
lubricate
speed
press
3hr
?
0.4m/s
3.5N/m㎡
0.185
93
0.015


Copyright 2004, All rights reserved. Tengfei Oilless Bearing Factory.
Factory Address: Fanxing Road, Fanjing Industrial Garden, Ganyao Town, Jiashan,Zhejiang,China.
Export Department Address:Unit 219, Yugu Road 147,Hangzhou, China.
Tel:86-571-87510719 Fax:86-571-87951484 Email:sales@tf-bearing.com