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 – COQUE D’APPUI:
Carbon steel S235 JR

C

0.17%

S

0.045%

Mn

1.40%

N

0.009%

P

0.045%

TF-C – SECTION DES PALIERS LISSES

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

TF-C – GRAPHIQUE CHARGE/VITESSE

SLIB Italy - Sliding bearings for high pressure and ball bearings.
TÉLÉCHARGER LA FICHE DU PRODUIT

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

SLIB Italy - Sliding bearings for high pressure and ball bearings.
TABLEAU DES TOLÉRANCES

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 SERVICE X X X X
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%
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
SHAFT For 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 TEMPERATURE 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		 min – 190 °C
max + 260 °C
COEFFICIENT OF FRICTION 0.03-0.20 0.03-0.20 0.03-0.20 0.03-0.20 0.03-0.20 0.03-0.20
MAX. SPEED 1.00 m/s 1.00 m/s 0.50 m/s 1.00 m/s 0.50 m/s 1.00 m/s
MAX. STATIC LOAD 250 N/mm2 250 N/mm2 250 N/mm2 250 N/mm2 250 N/mm2 250 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

HYDROCARBONS Excellent Excellent Excellent Excellent Excellent Excellent
HYDROCHLORIC ACID
(concentrate to 10%)		 Excellent Excellent Excellent Excellent Excellent Excellent
SULFURIC ACID
(concentrate to 10%)		 Excellent Excellent Excellent Excellent Excellent Excellent
METHANE Excellent Excellent Excellent Excellent Excellent Excellent
OXYGEN Excellent Excellent Excellent Excellent Excellent Excellent
SODIUM
HYDROXIDE		 Excellent Excellent Excellent Excellent Excellent Excellent
LIQUID
NITROGEN		 Excellent Excellent Excellent Excellent Excellent Excellent
SOLVENTS Good Good Good Good Good Good

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.