• 708-8H-32170 Tapered Roller Bearing for Komatsu Excavator PC270-8 PC290-10 PC300-8MO PC350-8MO PC360-7 Replacement Spare Parts
  • 708-8H-32170 Tapered Roller Bearing for Komatsu Excavator PC270-8 PC290-10 PC300-8MO PC350-8MO PC360-7 Replacement Spare Parts
  • 708-8H-32170 Tapered Roller Bearing for Komatsu Excavator PC270-8 PC290-10 PC300-8MO PC350-8MO PC360-7 Replacement Spare Parts
  • 708-8H-32170 Tapered Roller Bearing for Komatsu Excavator PC270-8 PC290-10 PC300-8MO PC350-8MO PC360-7 Replacement Spare Parts
  • 708-8H-32170 Tapered Roller Bearing for Komatsu Excavator PC270-8 PC290-10 PC300-8MO PC350-8MO PC360-7 Replacement Spare Parts
  • 708-8H-32170 Tapered Roller Bearing for Komatsu Excavator PC270-8 PC290-10 PC300-8MO PC350-8MO PC360-7 Replacement Spare Parts

708-8H-32170 Tapered Roller Bearing for Komatsu Excavator PC270-8 PC290-10 PC300-8MO PC350-8MO PC360-7 Replacement Spare Parts

708-8H-32170 tapered roller bearing is a special replacement part for medium Komatsu excavators including PC270-8, PC290-10, PC308USLC-3E0, PC300-8MO, PC350-8MO and PC360-7, mainly installed on hydraulic pump and slewing reduction transmission positions. Precisely manufactured from GCr15 bearing steel with optional P0/P6/P5 precision grades, it can bear combined radial and axial loads with great wear and impact resistance, adapting to alternating heavy loads in earthwork and mining operations. It can directly replace OEM bearings, serving as a key wearable bearing for maintenance and overhaul of hydraulic and slewing systems of medium excavators.
$5.76
ZHZB Bearing (Guangzhou)Co., Ltd.

ZHZB Bearing (Guangzhou)Co., Ltd.

Main Products: Excavator bearings, bulldozer bearings, loader bearings, dump truck bearings, deep groove ball bearings, tapered roller bearings, spherical roller bearings, cylindrical roller bearings, joint bearings, cross bearings, needle roller bearings, insert bearin
View Supplier
Year Established Established in 2017
Main Products Excavator bearings, bulldozer bearings, loader bearings, dump truck bearings, deep groove ball bearings, tapered roller bearings, spherical roller bearings, cylindrical roller bearings, joint bearings, cross bearings, needle roller bearings, insert bearin
Employees Less than 50 People
Factory Area 1,000-5,000 m²
Annual Revenue Above US$50 Million
Main Markets Europe / Southeast Asia / Africa
Details
Specifications
Trade Information

1. Product Overview

The 708-8H-32170 tapered roller bearing is developed for mainstream medium Komatsu excavators from PC270 to PC360 series with fully OEM-matched dimensions. It is mounted on transmission parts of main hydraulic pump and slewing reducer, enduring impact and alternating composite loads in excavation work, acting as a core matching part for maintenance of excavator hydraulic and slewing mechanisms.

2. Material & Processing Advantages

Made of standard GCr15 high-carbon chromium bearing steel with precise quenching and tempering heat treatment, it features uniform hardness on rollers and raceways for excellent anti-fatigue and wear performance. The tapered structure distributes radial and axial loads to adapt to frequent start-stop operation and variable working loads. Split inner and outer rings facilitate disassembly to shorten maintenance downtime and reduce construction delay losses.

3. Precision Grade Options

  • P0: Cost-effective standard choice for regular site maintenance and ordinary earthwork operation
  • P6: Tighter tolerance reduces vibration and heat generation, ideal for heavy continuous mining construction
  • P5: High-precision specification for complete machine overhaul and hydraulic/slewing system performance upgrade for smoother operation

4. Quality & Installation Instruction

Manufactured strictly following original 708-8H-32170 specifications for direct replacement without secondary machining. Every bearing passes full inspection on clearance, hardness and appearance before delivery. Custom precision grades are available for bulk orders to minimize installation failure risks.
OEM Part Number
708-8H-32170
Bearing Type
Tapered Roller Bearing
Applicable Equipment
Komatsu Excavator
Compatible Models
PC270-8、PC290-10、PC308USLC-3E0、PC300-8MO、PC350-8MO、PC360-7
Main Material
GCr15 Bearing Steel
Precision Grade
Optional P0/P6/P5
Product Category
Excavator Hydraulic Pump & Slewing Transmission Bearing
Load Feature
Bear combined radial and axial loads
MOQ
1 Pieces
Lead Time
7 days
Supply Ability
Cartons per Week
Trade Terms
FOB, EXW
  • 708-8H-32170 Tapered Roller Bearing for Komatsu Excavator PC270-8 PC290-10 PC300-8MO PC350-8MO PC360-7 Replacement Spare Parts
  • 708-8H-32170 Tapered Roller Bearing for Komatsu Excavator PC270-8 PC290-10 PC300-8MO PC350-8MO PC360-7 Replacement Spare Parts
  • 708-8H-32170 Tapered Roller Bearing for Komatsu Excavator PC270-8 PC290-10 PC300-8MO PC350-8MO PC360-7 Replacement Spare Parts

Description

1. Product Overview

The 708-8H-32170 tapered roller bearing is developed for mainstream medium Komatsu excavators from PC270 to PC360 series with fully OEM-matched dimensions. It is mounted on transmission parts of main hydraulic pump and slewing reducer, enduring impact and alternating composite loads in excavation work, acting as a core matching part for maintenance of excavator hydraulic and slewing mechanisms.

2. Material & Processing Advantages

Made of standard GCr15 high-carbon chromium bearing steel with precise quenching and tempering heat treatment, it features uniform hardness on rollers and raceways for excellent anti-fatigue and wear performance. The tapered structure distributes radial and axial loads to adapt to frequent start-stop operation and variable working loads. Split inner and outer rings facilitate disassembly to shorten maintenance downtime and reduce construction delay losses.

3. Precision Grade Options

  • P0: Cost-effective standard choice for regular site maintenance and ordinary earthwork operation
  • P6: Tighter tolerance reduces vibration and heat generation, ideal for heavy continuous mining construction
  • P5: High-precision specification for complete machine overhaul and hydraulic/slewing system performance upgrade for smoother operation

4. Quality & Installation Instruction

Manufactured strictly following original 708-8H-32170 specifications for direct replacement without secondary machining. Every bearing passes full inspection on clearance, hardness and appearance before delivery. Custom precision grades are available for bulk orders to minimize installation failure risks.
RFQ