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UNITY AUTO PARTS (CHINA) LIMITED
UNITY AUTO PARTS (CHINA) LIMITED Professional For Diesel Engine Pistons, Engine Piston Ring, Engine Cylinder Liner, Engine Valves Expo Partes in Bogota, Colombia on Jun.03-05.2015
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Casting Piston For Komatsu 6D140 Excavator OEM NO.: 6211-32-2130 Diesel Piston With Oil Cooling

Casting Piston For Komatsu 6D140 Excavator OEM NO.: 6211-32-2130 Diesel Piston With Oil Cooling

Place of Origin : Guangzhou,CHINA
Brand Name : STRONG
Certification : ISO9001,TS16949
Model Number : KOMATSU S6D140
MOQ : 600PCS
Price : Negotiable
Packaging Details : Strong, neutral, customizable
Delivery Time : 30days-45days
Payment Terms : T/T,L/C,D/P
Supply Ability : 300,000pcs per month
Material : CASTING IRON
Surface : Nitried / phosphating
Technic : Cooling Channel
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Casting Piston,Komatsu 6D140 Piston For Excavator 6211-32-2130


Piston Technology


Piston roof MoS2 Spraying
The function is close to roof anodizing improving heat resistance. The MoS2 is also good at lubrication. (The bigger piston below is piston roof anodizing, the smaller one is MoS2 Spraying)


Phosphate
The phosphate is aimed to improve initial running-in performance. The phosphate layer is easy to wear off and helpful to improve running-in.



Ceramic Spraying
The treatment performance is similar to anodizing and heat insulation performance is better. The ideal thickness is 0.2 to 0.3mm. When running under high temperature, the ceramic is easy to crack and wear off. It is not commonly used due to high cost


Tin Coating
Tin is coated by electro analysis or heat dipping at thickness between 0.001 and 0.003mm. Tin is characterized as soft and oil-friendly which improves running-in efficiency of piston and liner. This coating is most commonly used.


Graphite Sprayed at Piston Skirt/Graphite Printing
Graphite is characterized as good lubricating, which helps lubricant adhering to coating surface. The coating will reduce friction and scratching. The thickness is between 0.01 and 0.02 mm.


Piston roof anodizing
The piston roof is anodized by electro bath, forming thin layer of Al2O3 , This treatment will improve heat resistance (above 500℃), heat conductivity and anti-corrosion, it helps prevent piston roof burn-up. The thickness is normally 0.02 to 0.05mm. If the thickness increases by 0.01mm, the heat conductivity will decrease by 25%, the roof temperature when running will be lower from 30 to 50℃. Anodizing technology and processing is normally complicated.


Piston Type


Steel-insert piston

Steel-insert piston allows more uniform thermal expansion and tight fitting clearance.


ALFIN piston

ALFIN is inserted within the ring grooves when casting. ALFIN is made of special austenitic cast iron. It is tightly bonded metallically to piston body and counteracts the wear in the top ring groove. ALFIN pistons are commonly used in diesel engines.


Cooling channel piston

Cooling channel pistons effectively reduce piston body working and groove land temperature under high temperature working condition.


One piece casting piston

Compared to common five-pieces casting, one piece casting technology is better in efficiency and appearance, it also reduces casting flaws.


Compares piston

The sealing and guiding functions of the piston are separated from one another. The upper part is made of cast iron and the lower part is made of aluminum. The two parts is joined by bolts. The piston can perform with not only maximum strength and heat resistance, but also low wear values and optimum conditions for meeting future emission standards.


Forged piston

The forged piston allows smaller cross sections and lower piston weight. This kind of piston is installed primarily in sports car engines and heavy-duty fast-running engines.


UAP NO.

OEM NO.

ENGINE MODEL

NO.CYL

DIA. * LENGTH

RING SIZE

PIN SIZE

PISTON FEATURES

KOMATSU

PS-KM-001

6140-31-2010

4D92

4

94*99.00

1-2.806K
2-3.00
3-6.00

32*74

 

PS-KM-002

6142-32-2110

4D94

4

94*99.20

1-2.90
2-2.50
3-5.00

32*74

shiny
no alfin

PS-KM-003

6142-32-2120

4D94

4

94*99.00

1-3.00
2-2.50
3-5.00

32*74

 

PS-KM-004

129901-22081

4D94E

4

94*103.80

1-2.0HK
2-2.00
3-3.00

30*72.50

shiny
steel
no alfin

PS-KM-005

6202-32-2120

4D95(D30)

4

95*94.00

1-2.25HK
2-2.00
3-4.00

30*74

 

PS-KM-006

6202-32-2120

4D95K

4

95*94.10

1-2.25HK
2-2.00
3-4.00

30*74

 

PS-KM-007

6202-32-2130

4D95

4

95*104.00

1-2.25HK
2-2.00
3-4.00

30*74

 

PS-KM-008

6202-32-2140

4D95L

4

95*104.00

1-2.25HK
2-2.25HK
3-4.00

30*74

 

PS-KM-009

6202-32-2160

4D95L-1

4

95*104.30

1-2.00
2-2.00
3-4.00

30*74

 

PS-KM-010

6204-31-2111

4D95

4

95*94.00

1-2.00
2-2.00
3-4.00

30*74

 

PS-KM-011

6204-31-2121 STD
6204-39-2121 0.25
6204-38-2121 0.50
6204-31-2112

4D95

4

95*94.00

1-2.00
2-2.00
3-4.00

30*74

shiny
steel
no alfin

PS-KM-012

6202-32-2110
6207-31-2141

4D95
S6D95

4/6

95*94.00

1-3.0DK
2-2.30K
3-4.00

30*74

 

PS-KM-013

6201-31-2180

S6D95L/A

6

95*94.20

1-2.6DK
2-2.4DK
3-4.00

30*74

 

PS-KM-014

6205-31-2172

4D95L

4

95*84.30

1-2.00
2-2.00
3-4.00

30*74

shiny
no alfin

PS-KM-015

6207-31-2180

S6D95L

6

95*94.20

1-2.50K
2-2.25K
3-4.00

30*74

shiny
steel
alfin

PS-KM-016

6207-31-2121

6D95C

6

95*94.30

1-3.0DK
2.30K
4.00

30*74

 

PS-KM-017

6202-33-2150

6D95A

6

95*104.30

1-2.00
2-2.00
3-4.00

30*74

 

PS-KM-018

6207-31-2141
(1-1211-2401)
6209-31-2141 STD
6209-38-2141 0.50
6209-39-2141 0.25

S6D95
(PC200-5)
S6D95L

6

95*94.20

1-2.50K
2-2.0HK
3-4.00

30*74

shiny
steel
alfin

PS-KM-019

E2141

4D95

4

95*84.50

1-2.00
2-2.00
3-4.00

30*74

 

PS-KM-020

E2190

B3.3(2190)

4

95*84.30

1-2.00
2-2.00
3-4.00

30*74

shiny
no alfin

PS-KM-021

E2172

B3.3(2172)

4

95*84.30

1-2.00
2-2.00
3-4.00

30*74

shiny
no alfin

PS-KM-022

E2190

B3.3

4

95*84.30

1-2.00
2-2.00
3-4.00

30*74

shiny
no alfin

PS-KM-023

E2170

B3.3(2170)

4

95*84.30

1-2.00
2-2.00
3-4.00

30*74

shiny
no alfin

PS-KM-024

6735-31-2111 STD
6735-31-2110 STD
6735-31-2140 STD
6735-38-2111 0.50
6135-38-2110 0.50

S6D102

6

102*105.40

1-2.85K
2-2.385
3-4.00

40*83

shiny
alfin

PS-KM-025

 

S6D102

6

102*105.40

1-2.85K
2-2.85K
3-4.00

40*83

shiny
alfin

PS-KM-026

 

S6D102

6

102*105.40

1-2.85K
2-2.385
3-4.00

40*83

shiny
alfin

PS-KM-027

 

S6D102

6

102*105.40

1-2.85K
2-2.385
3-4.00

40*83

shiny
alfin

PS-KM-028

 

S6D105ES

6

105*107.50

1-3.00K
2-2.50
3-5.00

38*89

shiny
alfin

PS-KM-029

6137-32-2110

6D105
S6D105

4/6

105*107.70

1-3.00K
2-2.50HK
3-5.00

40*86

shiny
alfin

PS-KM-030

6136-32-2110

S6D105 PC200-2

6

105*107.70

1-3.00
2-2.50
3-5.00

40*84

shiny
alfin

PS-KM-031

6136-32-2120

PC200-2

6

105*107.90

1-3.00
2-2.50
3-5.00

40*84.50

shiny
no alfin

PS-KM-032

6131-32-2120

S4D105

4

105*107.30

1-3.15DK
2-2.50
3-5.00

38*88

 

PS-KM-033

6136-31-2112

4D105
PC200-1

4/6

105*107.60

1-3.00
2-2.50
3-5.00

40*84.50

shiny
no alfin

PS-KM-034

6222-31-2110

S6D108

6

108*113.80

1-2.50K
2-2.50K
3-4.00

45*85

shiny
oil gallery
alfin

PS-KM-035

6222-33-2110

S6D108

6

108*113.80

1-2.50K
2-2.50K
3-4.00

45*85

shiny
oil gallery
alfin

PS-KM-036

6138-32-2111

6D110

6

110*116.20

1-3.0DK
2-2.50K
3-5.00

40*91

 

PS-KM-037

6138-31-2110

S6D110

6

110*116.00

1-3.5DK
2-2.50K
3-5.00

40*91

 

PS-KM-038

6110-33-2131

4D120
6D120

4/6

120*135.00

1-3.50
2-2.50
3-5.50

44*101.5

 

PS-KM-039

6151-31-2170

T45N IRON

1

125*117.40

1-2.4DK
2-2.4DK
3-4.00

48*99

 

PS-KM-040

6151-31-2171

S6D125

6

125*131.10

1-2.50K
2-2.50K
3-4.00

48*104

shiny
alfin

PS-KM-041

6151-31-2510

S6D125A BLACK

6

125*131.20

1-2.5DK
2-2.5DK
3-4.00

48*104

 

PS-KM-042

6150-31-2112

S6D125

6

125*131.10

1-2.50K
2-2.50K
3-4


Product Tags:

diesel engine parts

      

racing pistons

      
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Casting Piston For Komatsu 6D140 Excavator OEM NO.: 6211-32-2130 Diesel Piston With Oil Cooling Images

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