TF - 316 TYPE

TF-316 . TF-316S

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-316 – COQUE D’APPUI:
AISI 316L

C

0.03%

Mn

1.80%

S

0.025%

Cr

16.70%

P

0.03%

Ni

10.00%

Si

0.50%

Mo

2.00%

TF-316 – SECTION DES PALIERS LISSES

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

TF-316 – GRAPHIQUE CHARGE/VITESSE

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

TF-316S – COQUE D’APPUI:
AISI 316L

C

0.03%

Mn

1.80%

S

0.025%

Cr

16.70%

P

0.03%

Ni

10.00%

Si

0.50%

Mo

2.00%

TF-316S – SECTION DES PALIERS LISSES

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

TF-316S – GRAPHIQUE CHARGE/VITESSE

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

Dimensions

LÉGENDE DE LA TABLE:

DIMENSIONS:

Diamètre intérieur et extérieur du roulement

Ø INTÉRIEUR:

Plage de tolérance du Ø intérieur après montage dans le siège (mm)

Ø SIÈGE:

Tolérance de siège (mm)

ÉPAISSEUR DE BUSH:

Tolérance d’épaisseur du roulement fini (mm)

COUPE:

Ouverture maximale des volets de roulement (mm)

Ø ARBRE (tolérance f7):

Dimension correcte de l’arbre à utiliser avec le roulement

Tableau de comparaison

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
COQUE D’APPUI

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%
Mn1.80%
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

Remarque: Les informations contenues dans ce tableau doivent être considérées comme fiables, mais les conditions et les méthodes d’utilisation indépendantes de notre volonté, peuvent modifier les résultats. Les informations et données contenues dans ce tableau sont le résultat d’une longue et détaillée recherche, mais F.lli Paris S.r.l. ne peut être considéré responsable pour toute donnée incorrecte ou incomplète. Face au développement constant des produits, nous nous réservons le droit de les modifier sans préavis.