TX Type

TX-C . TX-316 . TX-625 . TX-F51

This code identifies a line of bearings that are specially manufactured to allow the bonding of a filled PTFE coated fiber (lead free, in accordance to the European Parliament “ELV” directive 2000/53/EC) on four types of backing metal layers, like carbon steel, bronze, stainless steel and Inconel 625.
The Sliding Surface is primarily composed of filled PTFE coated fiber, and other elements to guarantee the high wear resistance. The TX products find their best usage in slow-moving applications, with heavy loads, and where dry operation is required. Thanks to the thick self-lubricating layer up to 0.40 mm, this product has a high wear resistance, and can work in dirty or abrasive environment.
For this product it is not recommended the use of oil, while the use of special grease, such as silicon or lithium soap, is only possible during the assembly.


BEARING SECTION

GRAPHIC LOAD/SPEED

PS: the values shown in the graph were determined with a test of constant load, and running for 1000 cycles at three different temperatures: -190 °C, +18 °C and +260 °C

Dimensions

TABLE LEGEND:

SIZE:
Inside and outside bearing diameters
INSIDE Ø:
Tolerance range of the inside diameter after the assembly in the seat (mm)
HOUSING/SEAT Ø:
Housing/seat tolerance (mm)
BEARING THICKNESS:
Thickness tolerance of the finished bearing (mm)
CUT:
Maximum opening of the bearing flaps (carbon steel, 316 and 625) (mm)
SHAFT Ø:
Correct size of the shaft to be used with the bearing

BEARING THICKNESS CUT SHAFT Ø
SIZE
I.D. - E.D.
INSIDE Ø
MIN AND MAX
HOUSING/SEAT Ø
MIN AND MAX
ADM. THK. IDEAL RANGE ADM. THK. C.S. 316/625 CORRECT SIZE
[[ dato.01 ]] [[ dato.02 ]] [[ dato.03 ]] [[ dato.04 ]] [[ dato.05 ]] [[ dato.06 ]] [[ dato.07 ]] [[ dato.08 ]] [[ dato.09 ]] [[ dato.10 ]] [[ dato.11 ]]

Comparison table

TX-C
Bushings
Carbon Steel S235 JR
+Sintering
+ Fiber + filled PTFE
TX-316
Bushings
Aisi 316L
+ Sintering
+ Fiber + filled PTFE
TX-625
Bushings
Inconel 625
+ Sintering
+ Fiber + filled PTFE
TX-F51
Bushings
Duplex A182 F51
+ Sintering
+ Fiber + filled PTFE
FASTRACK SERVICE
SUPPORTING SHELL C 0.17%, S 0.045%
Mn 1.40%, N 0.009%
P 0.045%
C 0.03%, Mn 1.80%
S 0.025%, Cr 16.70%
P 0.03%, Ni 10.00%
Si 0.50%, Mo 2.00%
C 0.10%, Co 1.00%
Mn 0.05%, Ta + Nb 3.15 ÷ 4.15%
Cr 20 ÷ 23%, Ni Rest
Mo 8 ÷ 10%
C 0.02%, Cr 22.70%
S <0.015%, Ni 5.60%
P 0.025%, Mo 3.20%
Si 0.50%, N 0.16%
Mn 1.40%
The given values are nominal values from literature.
SLIDING LAYERS Special fiber with filled PTFE, colour black-gray, thickness 400 micron, heavy load capacity and self-lubricating under dry operation.
SINTERING Special adhesive between the fiber and the backing steel, thickness 60 micron.
SHAFT The shaft surface finishing, for optimal performance, shall be between 0.40 and 1.60 micron Ra, depending on different application. Hardness 80 – 160 HB5.
MECHANICAL PROPERTIES
WORKING TEMPERATURE min - 180 °C - max + 260 °C min - 180 °C - max + 260 °C min - 180 °C - max + 260 °C min - 180 °C - max + 260 °C
COEFFICIENT OF FRICTION 0.03-0.10 0.03-0.10 0.03-0.10 0.03-0.10
MAX. SPEED 0.50 m/s 0.50 m/s 0.50 m/s 0.50 m/s
MAX. STATIC LOAD 300 N/mm2 300 N/mm2 400 N/mm2 400 N/mm2
MAX. DYNAMIC LOAD
(max. speed 0.05 m/s)
190 N/mm2 190 N/mm2 190 N/mm2 190 N/mm2
MAX. DYNAMIC LOAD
(max. speed 0.50 m/s)
100 N/mm2 100 N/mm2 100 N/mm2 100 N/mm2
REMARKS For these products we propose an upgraded version called Plus, with an enhanced coefficient of friction. Range 0.02 – 0.08
CHEMICAL RESISTANCE
HYDROCARBONS Excellent Excellent Excellent Excellent
HYDROCHLORIC ACID
(concentrate to 10%)
Excellent Excellent Excellent Excellent
SULFURIC ACID
(concentrate to 10%)
Excellent Excellent Excellent Excellent
METHANE Excellent Excellent Excellent Excellent
OXYGEN Excellent Excellent Excellent Excellent
SODIUM HYDROXIDE Excellent Excellent Excellent Excellent
LIQUID NITROGEN Excellent Excellent Excellent Excellent
SOLVENTS Good Good Good Good

Note: The informaton in this data-sheet is to be considered reliable, but conditons and methods of use, which are beyond our control, may modify the results. The informaton and data contained in this data-sheet are the result of a long and detailed research, however F.lli Paris S.r.l. cannot be considered responsible for any incorrect or incomplete data. Owing to the constant development of the products, we reserve the right to make changes to them without prior notice.