TF - C TYPE

The TF code identifies a family of self-lubricating bearings and washers made by a composite multilayer material. The main parts composing this product are a modified filled PTFE layer (lead free, in accordance to the European Parliament “ELV” directive 2000/53/EC) for the sliding self-lubricating surface, and a special primer used to allow the sintering of the PTFE layer to various types of baking metal layers like: carbon steel, bronze, stainless steel and Inconel 625. Thanks to its structure, the TF type provides an excellent match between the mechanical strength of the steel and the low coefficient of friction of the modified PTFE sliding layer.
This is a product that can be used in applications with medium loads and in a clean environment with low levels of abrasive elements such as metal powders. It can also be used with special mineral oils and specific greases such as silicone compounds or lithium soap.

TF-C – SUPPORTING SHELL:
Carbon steel S235 JR

C

0.17%

S

0.045%

Mn

1.40%

N

0.009%

P

0.045%

TF-C – BEARING SECTION

Bearing for Valves - SLIB Italy - Sliding bearings for high pressure and ball bearings.

TF-C – GRAPHIC LOAD/SPEED

Bearing for Valves - SLIB Italy - Sliding bearings for high pressure and ball bearings.

Größe

BESCHREIBUNG DER TABELLE:

MASSE:

Innen- und Außendurchmesser des Lagers

INTERNAL Ø:

Interner Toleranzbereich Ø nach Montage im Sitz (mm)

SITZ Ø:

Sitztoleranz (mm)

DICKE DER BUCHSE:

Dickentoleranz des fertigen Lagers (mm)

SCHNITT:

Maximale Öffnung der Lagerklappen (mm)

Ø WELLE (Toleranz f7):

Korrekte Messung der mit dem Lager zu verwendenden Welle

Vergleichstabelle

All our TF types can be produced also as PLUS model, which is an enhanced type of lubrication treatment to reduce even more the coefficient of friction.

 

TF-C

TF-316

TF-316S

TF-625

TF-625S

TF-F51

Carbon Steel S235 JR
+Sintering
+ Filled PTFE film

Aisi 316L
+ Sintering
+ Filled PTFE film

Aisi 316L
+Sintering*
+ Filed PTFE

modified film

Carbon steel S235 JR
+ Sintering
+ Filled PTFE film

Carbon steel S235 JR
+ Sintering *
+ Filed PTFE
modified film

Duplex A182 F51
+ Sintering
+ Filled PTFE film

FASTRACK SERVICEXXXX
STÜTZSCHALE

C 0.17%,
S 0.045%
Mn1.40%
N 0.009%
P 0.045%

C 0.03%
Mn 1.80%
S 0.025%
Cr 16.70%
P0.03%
Ni10.00%
Si0.50%
Mo 2.00%

C 0.03%
Mn 1.80%
S0.025%
Cr16.70%
P0.03%
Ni 10.00%
Si0.50%
Mo 2.00%

C 0.10%
Co 1.00% max
Mn0.05%
Ta + Nb 3.15 ÷ 4.15%
Cr20 ÷ 23%
NiRest
Mo 8 ÷ 10%

C 0.10%
Co 1.00% max
Mn0.05%
Ta + Nb 3.15 ÷ 4.15%
Cr20 ÷ 23%
NiRest
Mo 8 ÷ 10%

C 0.20%
Cr 22.70%
S<0.15%
Ni5.60%
P0.025%
Mo3.20%
Si0.50%
N0.16%
Mn 1.40%

The given values are nominal values from literature.
SLIDING LAYERS

Filled PTFE film, colour black-gray, thickness 200–220 μm,
heavy load capacity and self-lubricating under dry operation, lead free and non-coated.

SINTERING

Oven made sintering process between PTFE and the steel backing at a temperature of +250° C – BRONZE FREE.
* Special adhesive between the modi ed lled PTFE lm and the backing steel, thickness 60 μm, valid just for TF-316S and TF-625S

SHAFTFor an optimal performance the shaftsurface finishing shall be between Ra 0.40 and 1.60 μm, depending on the different applications. Hardness 80 – 160 HB5.

Mechanical Properties

WORKING TEMPERATUREmin – 190 °C
max + 260 °C
min – 190 °C
max + 260 °C
min – 190 °C
max + 260 °C
min – 190 °C
max + 260 °C
min – 190 °C
max + 260 °C
min – 190 °C
max + 260 °C
COEFFICIENT OF FRICTION0.03-0.200.03-0.200.03-0.200.03-0.200.03-0.200.03-0.20
MAX. SPEED1.00 m/s1.00 m/s0.50 m/s1.00 m/s0.50 m/s1.00 m/s
MAX. STATIC LOAD250 N/mm2250 N/mm2250 N/mm2250 N/mm2250 N/mm2250 N/mm2
MAX. DYNAMIC LOAD
(max. speed)
140 N/mm2
(0.10 m/s)
140 N/mm2
(0.10 m/s)
180 N/mm2
(0.05 m/s)
140 N/mm2
(0.10 m/s)
180 N/mm2
(0.05 m/s)
140 N/mm2
(0.10 m/s)
MAX. DYNAMIC LOAD
(max. speed)
60 N/mm2
(1.00 m/s)
60 N/mm2
(1.00 m/s)
80 N/mm2
(0.50 m/s)
60 N/mm2
(1.00 m/s)
80 N/mm2
(0.50 m/s)
60 N/mm2
(1.00 m/s)

Chemical Resistance

HYDROCARBONSExcellentExcellentExcellentExcellentExcellentExcellent
HYDROCHLORIC ACID
(concentrate to 10%)
ExcellentExcellentExcellentExcellentExcellentExcellent
SULFURIC ACID
(concentrate to 10%)
ExcellentExcellentExcellentExcellentExcellentExcellent
METHANEExcellentExcellentExcellentExcellentExcellentExcellent
OXYGENExcellentExcellentExcellentExcellentExcellentExcellent
SODIUM
HYDROXIDE
ExcellentExcellentExcellentExcellentExcellentExcellent
LIQUID
NITROGEN
ExcellentExcellentExcellentExcellentExcellentExcellent
SOLVENTSGoodGoodGoodGoodGoodGood

Hinweis: Die Informationen in dieser Tabelle gelten als zuverlässig, aber die Bedingungen und Methoden der Verwendung, die außerhalb unserer Kontrolle liegen, können die Ergebnisse verändern. Die Informationen und Daten in dieser Tabelle sind das Ergebnis einer langen und detaillierten Forschung, jedoch F.lli Paris S.r.l. kann nicht für falsche oder unvollständige Daten verantwortlich gemacht werden. Wir behalten uns vor, diese Produkte ohne vorherige Ankündigung zu ändern.