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7861-93-1840 7861-93-1880 Pressure Sensor KOMATSU Excavator Spare Parts For PC300-8 PC350-8

Categories Excavator Electric Parts
Brand Name: OEM
Model Number: 7861-93-1840 7861-93-1880
Place of Origin: China
MOQ: 1 PCS
Price: 39 USD / pcs
Payment Terms: T/T, D/P, D/A,Western Union, L/C, MoneyGram
Supply Ability: 100-2000
Delivery Time: 3-7 working days
Packaging Details: Wooden box for heavy parts, paper carton for light parts
Category: Pressure Switch Block
Part number: 7861-93-1840 7861-93-1880
Product name: Pressure Sensor
Machine number: PC138US PC160 PC180 PC190
Application: Excavator
Lead time: 1-3 days for delivery
Packing: Standard Export Carton
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  • Product Details
  • Company Profile

7861-93-1840 7861-93-1880 Pressure Sensor KOMATSU Excavator Spare Parts For PC300-8 PC350-8

  • 7861-93-1840 7861-93-1880 Pressure Sensor KOMATSU Excavator Spare Parts For PC300-8 PC350-8


  • Specifiion

CategoryPressure Switch Block
NamePressure Sensor
Parts No7861-93-1840 7861-93-1880
Machine NumberPC118MR PC130 PC138 PC138US PC160 PC180 PC190
Lead time1-3 DAYS
QualityBrand new, OEM quality
MOQ1 PCS
Means of transportBy sea/air, DHL FEDEX UPS TNT
PackingAs request or standard packing

  • Key functions & working principle
Working Principle1. Pressure from the hydraulic/fuel system acts on the sensor’s diaphragm, causing it to deform slightly.
2. The piezoresistive strain gauge on the diaphragm changes resistance proportionally to the deformation.
3. An internal signal conditioning circuit converts the resistance change into a calibrated analog (0–5V/4–20mA) or digital (CAN bus) signal.
4. The ECU receives the signal, interprets the pressure data, and adjusts engine/hydraulic operations (e.g., fuel injection timing, hydraulic valve opening) to maintain optimal performance.
5. If pressure exceeds safe limits (e.g., hydraulic overload), the ECU triggers a warning light on the operator’s dashboard and may limit machine power to prevent damage.
Core Functions1. Real-Time Pressure Monitoring: Tracks hydraulic/fuel system pressure to ensure it stays within safe operating ranges
2. ECU Feedback: Provides precise pressure data for engine/hydraulic system optimization – improves fuel efficiency and reduces component wear
3. Fault Detection: Alerts operators to abnormal pressure conditions (e.g., low hydraulic pressure, fuel rail pressure spikes) via dashboard warnings
4. Overload Protection: Enables the ECU to limit power or shut down non-essential systems during pressure surges, preventing damage to pumps, valves, and cylinders

  • Compatible models

BULLDOZERS D31EX D31PX D37EX D37PX D39EX D39PX D51EX/PX D61EX D61EXI D61PX D61PXI
DUMP TRUCKS HM300 HM400
EXCAVATORS HB205 HB215 PC118MR PC130 PC138 PC138US PC160 PC180 PC190 PC200 PC2000 PC200LL PC210 PC220 PC220LL PC228 PC228US PC230NHD PC240 PC270 PC27MR PC290 PC300 PC300HD PC300LL PC308 PC30MR PC340 PC350 PC350HD PC350LL PC35MR PC360 PC390 PC390LL PC400 PC450 PC45MR PC490 PC550 PC55MR PC70 PC78US PC78UU PC88MR PW118MR PW148 PW160 PW180 PW200 PW220 PW98MR
WHEEL LOADERS WA270 WA320 Komatsu


  • More other sensor applied to KOMATSU heavey machine
20Y-979-6191 SENSOR
BOOM,, BOTTOM, CARRIER, D155AX, D475A, D475ASD, D65EX, D65PX, HB205, HB215, HM300, HM400, KOMTRAX, PC1250, PC1250SP, PC138, PC138US, PC200, PC210, PC220, PC228, PC228US, PC240, PC290, PC300, PC360, PC...
154-06-31230 SENSOR,ENGINE OIL PRESSURE
D85A, D85E, D85P
21T-06-64370 SENSOR ASS'Y
PC1800
6560-61-7101 SENSOR
SA6D170E, SAA6D170E
7861-92-3410 SENSOR,H/D OIL TEMPERATURE
D155AX, GD825A
237-06-15120 SENSOR,ENGINE WATER TEMPERATURE
CS360, CS360SD, GC380, GC380F, GD200A, GD22AC, GD22H, GD28AC, GD300A, GD305A, GD355A, GD405A, GD500R, GD505A, GD510R, GD511A, GD521A, GD611A, GD621A, GD621R, GD623A, GD661A, GD663A, GD705A, GD705R, GS...
561-88-66141 SENSOR,WHEEL SPEED
HD325, HD405, HD465, HD605, HD785, HD985
DY06022-20205 SENSOR,BATTERY
EG300BS, EG400BS
DY06055-03020 SENSOR,FUEL
EG125BS, EG150BS, EG300BS, EG400BS
21U-70-22900 SENSOR ASS'Y,ARM
PC28UU

  • Directory listing
Pos.Part NoQtyParts nameComments
120Y-62-16630[14]Nipple Komatsu0.06 kg.
["SN: 60001-UP"]
2.201-60-11390[1]O-ring Komatsu0.01 kg.
["SN: 60001-UP"]
3.20Y-62-19560[1]O-ring Komatsu0.01 kg.
["SN: 60001-UP"]
407002-11423[14]O-ring Komatsu China0.001 kg.
["SN: 60001-UP"] analogs:["0700201423"]
420Y-60-22201[2]Valve Assembly Komatsu0.21 kg.
["SN: 60001-UP"]
5.20Y-60-11750[1]Poppet Komatsu0.01 kg.
["SN: 60001-UP"]
6.20Y-60-22350[1]Body Komatsu China
["SN: 60001-UP"]
7.20Y-62-22410[1]Nipple Komatsu China
["SN: 60001-UP"]
10.07002-01423[1]O-ring Komatsu China0.001 kg.
["SN: 60001-UP"] analogs:["0700211423"]
12206-06-61130[6]Switch, Pressure Komatsu OEM0.04 kg.
["SN: 60001-UP"] analogs:["2060661330"]
137861-93-1840[2]Sensor Komatsu0.06 kg.
["SN: 60001-UP"]
14.07000-12011[1]O-ring Komatsu0.001 kg.
["SN: 60001-UP"] analogs:["YM24315000110", "0700002011"]
15207-62-74980[1]Block Komatsu China
["SN: 60001-UP"]
16207-62-74622[1]Bracket Komatsu China
["SN: 61290-UP"]
16207-62-74621[1]Bracket Komatsu China
["SN: 60001-61289", "SCC: A2"] analogs:["2076274620"]
1701010-81245[2]Bolt Komatsu0.056 kg.
["SN: 61290-UP"] analogs:["0101051245", "801015574"]
01010-81235[1]Bolt Komatsu0.048 kg.
["SN: 60001-61289"] analogs:["0101051235", "01010E1235", "801015136"] |$19.
01643-31232[1]Washer Komatsu0.027 kg.
["SN: 60001-61289"] analogs:["0164371232", "0164381232", "802170003", "R0164331232", "0614331232"] |$20.
1908034-20536[1]Band Komatsu0.003 kg.
["SN: 60001-UP"]
2001010-81260[2]Bolt Komatsu China0.069 kg.
["SN: 60001-UP"] analogs:["0101051260"]


  • We could supply the following spare parts

1 Hydraulic parts: hydraulic pump, main valve, hydraulic cylinder, final drive, travel motor, swing machinery, swing motor etc.


2 Engine parts: engine ass’y, piston, piston ring, cylinder block, cylinder head, crankshaft, turbocharger, fuel injection pump, starting motor and alternator etc.


3 Undercarriage part: Track roller, Carrier roller, Track Link, Track shoe, Sprocket, Idler and Idler cushion etc.


4 Cab parts: operator’s cab, wiring harness, monitor, controller, seat, door etc.


5 Cooling parts: Radiator, air conditioner, compressor, after cooler etc.


6 Other parts: Service kit, swing circle, engine hood, swing joint, fuel tank, filter, boom, arm, bucket etc.


  • Packing and Shipping

Packing Details :


inner packing : plastic film for wrapping


external packing : wooden


Shipping :


within 3 days after received the payment , by air or by express or by sea on the basis of the

quantity and emergency circumstances.


1. By Couriers: DHL, UPS, FEDEX, TNT are the main courier companies we are cooperated,


2. By Air: Delivery from the Guangzhou air port to customer's destination city air port.


3. By Sea: Delivery from the Huangpu port .


Quality 7861-93-1840 7861-93-1880 Pressure Sensor KOMATSU Excavator Spare Parts For PC300-8 PC350-8 wholesale
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