PMT CCC TYPE

PMT-316 CCC . PMT-625 CCC

This product identifies a new generation of Sliding Bearings for applications in low and high temperature, thanks to a special coating performed with a system similar to the PVD process. This coating confers to the material an excellent resistance to extreme temperatures while maintaining a good coefficient of static friction even with a dynamic heavy load.

The metal backing layers used for this product are the Aisi 316L and the Inconel 625. With this type of product, the shaft should not be heat treated. It is not recommendable to use oil and grease with these bearings.

PMT-316 CCC – SUPPORTING SHELL: 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%

PMT-316 CCC – BEARING SECTION

PMT-CCC AISI 316 L BACKING

PMT-316 CCC – GRAPHIC LOAD/SPEED

PMT-CCC GRAPHIC LOAD/SPEED

PMT-625 CCC – SUPPORTING SHELL: INCONEL 625

C

0.03%

Co

1.00%

Mn

0.05%

Ta+Nb

3.15÷4.15%

Cr

20÷23%

Ni

Rest

Mo

8÷10%

 

PMT-625 CCC – BEARING SECTION

PMT-CCC INCONEL 625 BACKING

PMT-625 CCC – GRAPHIC LOAD/SPEED

PMT-CCC GRAPHIC LOAD/SPEED

The values shown in the graph were determined with a test of constant load, and running for 1000 cycles at three different temperatures: -198 °C, +18 °C and +430 °C.

Comparison Table

PMT-316 CCC

PMT-625 CCC

Aisi 316L
+Chromium carbide
+ Special Coating

Inconel 625
+Chromium carbide
+Special coating

SUPPORTING SHELLC 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%, Mo 8÷10%
Ta + Nb 3.15 ÷ 4.15%
Cr 20 ÷ 23%, Ni Restante
The given values are nominal values from literature.
SLIDING LAYERS

Vaporization of the special coating. Multilayer deposit on the surface. Minimum hardness 180 HB, and minimum thickness 15 μm.

SHAFT

For an op mal performance the sha surface nishing shall be between Ra 0.40 and 1.60 μm, depending on the di erent applica ons. Hardness 100 – 160 HB5.

Mechanical Properties

WORKING TEMPERATUREmin – 198 °C
max + 430 °C
min – 198 °C
max + 430 °C
COEFFICIENT OF FRICTION0.06-0.120.06-0.12
MAX. SPEED0.40 m/s0.40 m/s
MAX. STATIC LOAD200 N/mm2200 N/mm2

MAX. DYNAMIC LOAD
(max. speed 0.05 m/s)

150 N/mm2150 N/mm2

MAX. DYNAMIC LOAD
(max. speed 0.50 m/s)

100 N/mm2100 N/mm2

Chemical Resistance

HYDROCARBONSExcellentExcellent
HYDROCHLORIC ACID
(concentrate to 10%)
ExcellentExcellent

SULFURIC ACID
(concentrate to 10%)

ExcellentExcellent
METHANEExcellentExcellent
OXYGENExcellentExcellent
SODIUM HYDROXIDEExcellentExcellent
LIQUID NITROGENExcellentExcellent
SOLVENTSExcellentExcellent

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.