The Role of Hardfacing in Equipment Longevity
Hardfacing is a welding process that deposits wear-resistant material onto surfaces subject to abrasion, impact, or erosion. It’s widely used in industries like mining, forestry, and construction, where components such as grinder hammers, excavator buckets, augers, and mud tools endure constant friction and material wear. A well-executed hardfacing job can extend service life by thousands of hours, reduce downtime, and lower replacement costs.
In one example, a Morbark grinder component lasted over 5,000 hours before requiring re-hardfacing—a testament to the effectiveness of proper material selection and application technique.
Terminology Annotation
- Hardfacing electrode: A stick welding rod containing alloy materials designed to resist wear.
- Flux-cored wire: A tubular wire filled with flux, used in MIG welding for hardfacing applications.
- Dual-shield wire: A flux-cored wire used with external shielding gas, offering deeper penetration and cleaner welds.
- Hexavalent chromium: A toxic compound released during welding of certain alloys, requiring ventilation or respiratory protection.
- Admixture: The dilution of hardfacing alloy with base metal during welding, which can reduce hardness if excessive.
Electrode vs. Wire for Field Repairs
When deciding between stick electrodes and wire for hardfacing, several factors come into play: equipment availability, job size, location, and desired wear characteristics. Stick electrodes like Lincoln’s Wearshield MI (moderate impact) are favored for field repairs due to portability and simplicity. They’re ideal for small jobs or remote sites where engine-driven welders are used.
Wire options, such as Lincore 60-O or 60-G, offer higher deposition rates and consistent bead profiles, making them suitable for shop environments or large-scale rebuilds. With a suitcase feeder and a Trailblazer 325 engine drive, wire welding becomes viable even in the field, especially when depositing several pounds of weld.
Recommendations:

• Use stick electrodes for small, mobile jobs or when access is limited
  
• Use flux-cored wire for high-volume applications or when uniformity is critical
  
• Match wire diameter to existing bead size for aesthetic and structural consistency
  
• Ensure DC polarity compatibility with your welder setup
  

• Stoody 35 ≈ Wearshield ME (stick)
  
• Stoody 35 ≈ Lincore 60-O or 60-G (.045 wire)
  
• For moderate impact: Wearshield MI (5/32", 150–160 amps DC+)
  
• For high impact: Wearshield 44 or Lincore 50
  

• Always weld hardfacing alloys in open-air environments when possible
  
• Use respirators or air-fed hoods for enclosed spaces
  
• Keep fire suppression tools nearby—grinder chambers and augers may contain flammable residues
  
• Avoid welding near hydraulic lines or fuel tanks without proper shielding
  

• Order hardfacing rods with steel shipments to reduce cost
  
• Maintain a cabinet of commonly used electrodes and wire for field readiness
  
• Use auto-set MIG machines for simplified wire setup, but verify settings manually for hardfacing
  
• Document successful material combinations for future reference
  

In various mechanical applications, precision and ease of assembly are crucial. One common feature used to achieve these goals is the threaded guide. This component, typically found in machinery like cranes, excavators, or other heavy equipment, serves to control the movement of parts while ensuring that they stay securely in place. Threaded guides are essential to the functionality of many devices, and their design is critical in ensuring smooth, safe operations.
What is a Threaded Guide?
A threaded guide is a mechanical component designed to guide a part or assembly along a predetermined path. It typically consists of a threaded shaft, which allows for precise linear movement. In most cases, the part being guided is fitted with a complementary nut that engages with the thread, allowing the part to move smoothly while preventing lateral displacement.
Threaded guides are used in various applications across multiple industries. In construction, they can be found in heavy machinery and equipment, helping to guide the movement of large components like arms, booms, and buckets. They are also used in manufacturing processes, such as CNC machines, where precision movement is critical.
Types of Threaded Guides

1. Acme Threaded Guides: Acme threads are commonly used in threaded guides because they provide high durability and smooth movement. Their trapezoidal shape offers more surface contact, making them ideal for load-bearing applications.
   
2. Square Threads: Square threads are known for their minimal friction and high load-bearing capacity. They are often used in applications where high efficiency and precise movements are required, such as in jacks and presses.
   
3. Buttress Threads: These are used when high forces are applied in only one direction. They feature a slanted design that improves strength under load and reduces the risk of damage in one direction.
   

1. Thread Wear and Tear: Over time, the threads can become worn down, especially when exposed to high loads or harsh conditions. This can lead to reduced movement efficiency and increased wear on other components.
   
2. Misalignment: If the threaded guide is not properly aligned during installation, it can cause uneven wear and poor performance. Misalignment can lead to increased friction, higher energy consumption, and even failure of the guide.
   
3. Contamination: Dirt, debris, and other contaminants can get into the threads, increasing friction and causing premature wear. Regular cleaning and maintenance are essential to ensure that threaded guides operate smoothly.
   

1. Lubrication: Proper lubrication reduces friction between the threads, preventing wear and improving the efficiency of movement. Using the right type of lubricant, such as grease or oil, depending on the application, can significantly extend the lifespan of the guide.
   
2. Regular Inspection: Periodically inspect the threaded guides for signs of wear or damage. This includes checking the threads for signs of stripping, deformation, or corrosion. If any issues are found, replacing the damaged components promptly is essential to prevent further damage to the machine.
   
3. Alignment Checks: Ensure that the threaded guides are properly aligned during installation and that they remain aligned during operation. Misalignment can cause premature wear and may result in the failure of other components in the system.
   
4. Sealing and Protection: To prevent contamination from dirt or debris, use seals or covers around the threaded guides. This will help to maintain cleanliness and reduce friction over time.
   

                               

ID：1826667

• Brand: Hyundai
  
• Model: R215-7C
  
• Year of Manufacture: 2011
  
• Hours: 8,000 hours
  
• Location: Jiangxi - Yingtan City
  

• Operating Weight: 20,700 kg
  
• Bucket Capacity: 0.92 m³
  
• Boom Length: 5650 mm
  
• Arm Length: 2990 mm
  
• Excavator Type: Backhoe
  
• Power Type: Conventional diesel
  
• Manufacturer: Joint venture/imported
  

• Total Length: 9510 mm
  
• Total Width: 2800 mm
  
• Total Height: 2990 mm
  
• Cab Height: 2920 mm
  
• Counterweight Clearance: 1060 mm
  
• Track Length: 4160 mm
  
• Track Width: 600 mm
  
• Ground Clearance: 480 mm
  

• Ground Pressure: 48 KPa
  
• Swing Speed: 12.5 rpm
  
• Gradeability: 70% / 35°
  
• Bucket Digging Force: 132.4 kN
  
• Arm Digging Force: 95.1 kN
  
• Maximum Traction Force: 19,500 N
  
• Travel Speed: 3.5–5.2 km/h
  

• Swing Hydraulic Motor: Fixed-displacement axial piston motor
  
• Travel Hydraulic Motor: Variable axial piston motor
  
• Main Pump Flow: 2 × 220 L/min
  
• Working Pressure: 300 MPa
  
• Pilot Pressure: 35 MPa
  
• Main Pump Type: 2 × variable axial piston pumps + 1 gear pump
  
• Boom Cylinder: 125 × 85 × 1320 mm
  
• Arm Cylinder: 140 × 95 × 1570 mm
  
• Bucket Cylinder: 120 × 80 × 1120 mm
  
• Optional hydraulic breaker line: Not standard
  

• Fuel Tank: 320 L
  
• Hydraulic Oil Tank: 165 L
  
• Engine Oil Replacement: 24 L
  
• Coolant: 35 L
  
• Hydraulic System: 270 L
  

• Maximum Digging Radius: 9930 mm
  
• Maximum Digging Depth: 6800 mm
  
• Maximum Digging Height: 9730 mm
  
• Maximum Dump Height: 6910 mm
  
• Maximum Vertical Digging Depth: 6060 mm
  
• Maximum Effective Digging Depth: 6610 mm
  
• Rear Swing Radius: 2830 mm
  

                                       

ID：1826666

• Brand: Shantui
  
• Model: SK200-8
  
• Year of Manufacture: 2015
  
• Hours: 10,000 hours
  
• Location: Guangdong - Foshan City
  

• Operating Weight: 20,600 kg
  
• Bucket Capacity: 0.8 m³
  
• Boom Length: 2.94 m
  
• Engine Type: Traditional diesel, joint venture/imported
  
• Bucket Type: Backhoe
  

• Engine Model: Hino J05E
  
• Rated Power: 114 kW at 2000 rpm
  
• Cooling System: Water-cooled
  
• Cylinder Bore × Stroke: 112 × 130 mm
  
• Cylinders: 4
  
• Displacement: 5.123 L
  
• Operation: Direct injection, 4-stroke, turbocharged, with intercooler
  

• Ground Pressure: 46 kPa
  
• Swing Speed: 12.5 rpm
  
• Gradeability: 70% / 35°
  
• Bucket Digging Force: 143 kN
  
• Arm Digging Force: 102 kN
  
• Travel Speed: 3.6 / 6.0 km/h
  

• Main Pump Max Flow: 2 × 220 l/min
  
• Travel Circuit Pressure: 34.3 MPa
  
• Swing Circuit Pressure: 29 MPa
  
• Control Circuit Pressure: 5 MPa
  
• Hydraulic Breaker Circuit: Standard
  
• Main Pump Type: Dual variable axial piston pumps ×2 + pilot gear pump ×1
  
• Working Oil Pressure: 34.3 MPa
  
• Bucket Cylinder: 120 × 1080 mm
  
• Arm Cylinder: 135 × 1558 mm
  
• Boom Cylinder: 120 × 1355 mm
  

• Fuel Tank: 370 L
  
• Hydraulic Tank: 146 L
  
• Engine Oil Change: 22 L
  
• Coolant: 22 L
  

• Transport Length: 9450 mm
  
• Transport Width: 2800 mm
  
• Transport Height: 2980 mm
  
• Counterweight Clearance: 1060 mm
  
• Minimum Ground Clearance: 450 mm
  
• Front Working Device Min Swing Radius: 3540 mm
  
• Rear Swing Radius: 2750 mm
  
• Track Total Length: 4170 mm
  
• Track Gauge: 2200 mm
  
• Track Shoe Width: 600/700/800 mm
  
• Track Total Width: 2800 mm
  
• Track Ground Contact Length: 3370 mm
  

• Max Digging Radius: 9900 mm
  
• Max Digging Depth: 6700 mm
  
• Max Digging Height: 9720 mm
  
• Max Dump Height: 6910 mm
  
• Max Vertical Digging Depth: 6100 mm
  
• Blade: None
  
• Max Ground Surface Digging Radius: 9730 mm
  
• Effective Max Digging Depth: 6520 mm
  

                                       

ID：1826045

• Brand: Doosan
  
• Model: DX150WE-9C
  
• Year of Manufacture: 2018
  
• Hours: 8,000 hours
  
• Location: Jiangsu - Nanjing City
  

• Operating weight: 13,525 kg
  
• Bucket capacity: 0.57 m³
  
• Boom length: 4,400 mm
  
• Arm length: 2,100 mm
  
• Power type: Conventional diesel engine
  
• Manufacturer type: Joint venture/imported
  
• Bucket type: Backhoe
  

• Engine model: Perkins 1104D
  
• Rated power: 102 kW at 2,200 rpm
  
• Cylinder bore × stroke: 105 × 127 mm
  
• Number of cylinders: 4
  

• Bucket digging force: 89.9 kN
  
• Arm digging force: 69.6 kN
  

• Maximum main pump flow: 2 × 167 L/min
  
• Main pump type: Variable displacement piston pump
  

• Transport length: 7,390 mm
  
• Transport width: 2,523 mm
  
• Transport height: 3,504 mm
  
• Counterweight ground clearance: 1,206 mm
  
• Minimum ground clearance: 350 mm
  
• Front working device minimum turning radius: 2,468 mm
  
• Rear turning radius: 2,305 mm
  

• Maximum digging radius: 7,615 mm
  
• Maximum digging depth: 4,477 mm
  
• Maximum digging height: 8,336 mm
  
• Maximum unloading height: 5,974 mm
  

                           

ID：1826651

• Brand: Komatsu
  
• Model: PC850-8E0
  
• Year of Manufacture: 2020
  
• Hours: 6,220 hours
  
• Location: Sichuan - Yibin City
  

• Brand: Komatsu
  
• Model: PC850-8E0
  
• Year of Manufacture: 2020
  
• Hours Used: 6220
  
• Location: Sichuan-Yibin
  

• Operating Weight: 78,300 kg
  
• Bucket Capacity: 4.3 m³
  
• Boom Length: 7100 mm
  
• Arm Length: 2945 mm
  
• Power Type: Conventional diesel engine
  
• Manufacturer: Joint venture/imported
  
• Bucket Type: Backhoe
  

• Engine Model: Komatsu SAA6D140E-5
  
• Rated Power: 363 kW at 1800 rpm
  
• Cooling: Water-cooled
  
• Cylinder Bore × Stroke: 140 × 165 mm
  
• Number of Cylinders: 6
  
• Displacement: 15.24 L
  

• Ground Pressure: 127 kPa
  
• Swing Speed: 6.8 rpm
  
• Climbing Ability: 70%
  
• Bucket Digging Force: 391 kN
  
• Arm Digging Force: 331 kN
  
• Maximum Traction: 559 kN
  
• Travel Speed: 2.8/4.2 km/h
  

• Main Pump Flow: 2 × 494 L/min
  
• Travel Hydraulic Circuit: 34.3 MPa
  
• Swing Hydraulic Circuit: 28.4 MPa
  
• Pump Type: Variable displacement piston pump
  
• Working Hydraulic Pressure: 31.4 MPa
  
• Pilot Pressure: 2.9 MPa
  
• Bucket Cylinder: 1 × 225 × 1420 mm
  
• Arm Cylinder: 2 × 185 × 1610 mm
  
• Boom Cylinder: 2 × 200 × 1950 mm
  

• Fuel Tank: 980 L
  
• Hydraulic Tank: 440 L
  
• Engine Oil: 58 L
  

• Transport Length: 13,130 mm
  
• Transport Width: 3,390 mm
  
• Transport Height: 4,615 mm
  
• Counterweight Ground Clearance: 1,560 mm
  
• Minimum Ground Clearance: 840 mm
  
• Front Working Radius: 5,645 mm
  
• Track Length: 5,810 mm
  
• Track Ground Contact Length: 4,500 mm
  
• Track Rollers (per side): 8
  
• Track Shoes (per side): 47
  

• Maximum Digging Radius: 12,265 mm
  
• Maximum Digging Depth: 7,130 mm
  
• Maximum Digging Height: 11,330 mm
  
• Maximum Dumping Height: 7,525 mm
  
• Maximum Vertical Digging Depth: 4,080 mm
  
• Maximum Excavation Radius at Ground Level: 11,945 mm
  

• Regular hydraulic and engine oil checks are essential for consistent performance.
  
• For steep terrain, ensure proper counterweight balance.
  
• Use the recommended bucket types to maximize digging efficiency.
  
• Maintain track tension to prevent premature wear on rollers and shoes.
  

                               

ID：1826646

• Brand: Sumitomo
  
• Model: SH240-5
  
• Year of Manufacture: 2011
  
• Hours: 9,677 hours
  
• Location: Tianjin - Tianjin City
  

• Operating Weight: 24,600 kg
  
• Bucket Capacity: 1.1–1.3 m³
  
• Arm Length: 5,850 mm
  
• Boom Length: 3,000 mm
  
• Power: Conventional diesel
  
• Bucket Type: Backhoe
  
• Manufacturer: Joint venture/imported
  

• Engine Model: Isuzu AH-4HK1X (Tier 3)
  
• Rated Power: 132.1 kW / 2000 rpm
  
• Cooling: Water-cooled
  
• Cylinder Bore × Stroke: 115 × 125 mm
  
• Number of Cylinders: 4
  
• Displacement: 5.193 L
  
• Engine Type: Four-stroke, direct injection, fully electronic control, turbocharged with intercooler
  

• Ground Pressure: 48 kPa
  
• Swing Speed: 10.7 rpm
  
• Gradeability: 70% / 35°
  
• Bucket Digging Force: 162 kN (Standard) / 174 kN (Power Boost)
  
• Arm Digging Force: 120 kN (Standard) / 129 kN (Power Boost)
  
• Travel Speed: 3.5 / 5.5 km/h
  

• Main Relief Pressure: 34.3 MPa
  
• Swing Hydraulic Motor Type: Fixed displacement axial piston
  
• Travel Hydraulic Motor Type: Variable displacement axial piston
  
• Maximum Pump Flow: 468 L/min
  
• Travel Hydraulic Circuit Pressure: 34.3 MPa
  
• Swing Hydraulic Circuit Pressure: 28.9 MPa
  
• Hydraulic Breaker Circuit: Not standard
  
• Pump Type: 2 variable axial piston pumps + 1 gear pump
  
• Work Circuit Pressure: 36.8 MPa
  
• Bucket Cylinder: Ø130 × 1070 mm
  
• Arm Cylinder: Ø145 × 1660 mm
  
• Boom Cylinder: Ø130 × 1335 mm
  

• Fuel Tank: 410 L
  
• Hydraulic Oil Tank: 147 L
  
• Engine Oil: 23.1 L
  
• Coolant: 25.2 L
  
• Hydraulic System: 250 L
  

• Transport Length: 9,930 mm
  
• Transport Width: 3,190 mm
  
• Transport Height: 3,150 mm
  
• Cab Height: 3,000 mm
  
• Counterweight Ground Clearance: 1,100 mm
  
• Minimum Ground Clearance: 460 mm
  
• Minimum Front Swing Radius: 3,950 mm
  
• Rear Swing Radius: 2,940 mm
  
• Uppercarriage Width: 2,770 mm
  
• Track Total Length: 4,650 mm
  
• Track Gauge: 2,590 mm
  
• Track Shoe Width: 600 mm
  
• Track Total Width: 3,190 mm
  
• Track Ground Contact Length: 3,840 mm
  

• Maximum Digging Radius: 10,280 mm
  
• Maximum Digging Depth: 6,900 mm
  
• Maximum Digging Height: 9,760 mm
  
• Maximum Dumping Height: 6,760 mm
  
• Maximum Vertical Digging Depth: 6,140 mm
  
• Maximum Reach at Ground Level: 10,100 mm
  
• Maximum Effective Digging Depth: 6,740 mm
  

                               

ID：1826644

• Brand: Hitachi
  
• Model: ZX130-5A
  
• Year of Manufacture: 2017
  
• Hours: 8,750 hours
  
• Location: Jiangxi - Jiujiang City
  

• Brand: Hitachi
  
• Model: ZX130-5A
  
• Year of Manufacture: 2017
  
• Hours of Operation: 8,750
  
• Location: Jiujiang, Jiangxi
  

• Operating Weight: 12,500 kg
  
• Bucket Capacity: 0.52 m³
  
• Stick Length: 2,520 mm
  
• Power Type: Conventional
  
• Manufacturer: Joint venture/imported
  
• Bucket Type: Backhoe
  

• Engine Model: Isuzu GJ-4JJ1XKSA-03
  
• Rated Power: 69 kW / 2000 rpm
  
• Cooling System: Water-cooled
  
• Bore × Stroke: 95 × 105 mm
  
• Maximum Torque: 354 N·m / 1600 rpm
  
• Cylinders: 4
  
• Displacement: 2.999 L
  
• Operating Form: 4-stroke, water-cooled, electronically controlled direct injection
  

• Ground Pressure: 39 kPa
  
• Swing Speed: 13.3 rpm
  
• Gradeability: 70%
  
• Bucket Digging Force: 104 kN
  
• Stick Digging Force: 69 kN
  
• Maximum Traction Force: 117 kN
  
• Travel Speed: 3.3–5.5 km/h
  

• Swing Hydraulic Motor: 1 axial piston motor
  
• Travel Hydraulic Motors: 2 variable axial piston motors
  
• Main Pump Flow: 2 × 117 L/min
  
• Travel Hydraulic Pressure: 34.3 MPa
  
• Swing Hydraulic Pressure: 32.3 MPa
  
• Main Pump Type: 2 variable axial piston pumps
  
• Pilot Pressure: 4.0 MPa
  
• Pilot Pump Flow: 33.6 L/min
  
• Bucket Cylinder: 1 × 100 × 70 mm
  
• Stick Cylinder: 1 × 115 × 80 mm
  
• Boom Cylinder: 2 × 105 × 70 mm
  
• Pilot Pump Type: 1 gear pump
  

• Fuel Tank: 280 L
  
• Hydraulic Tank: 70 L
  
• Engine Oil Change: 17 L
  
• Coolant: 24 L
  
• Hydraulic System: 170 L
  

• Transport Length: 7,700 mm
  
• Transport Width: 2,490 mm
  
• Transport Height: 2,790 mm
  
• Cab Height: 2,790 mm
  
• Counterweight Ground Clearance: 840 mm
  
• Minimum Ground Clearance: 410 mm
  
• Front Working Device Minimum Turning Radius: 2,400 mm
  
• Rear Swing Radius: 2,190 mm
  
• Track Gauge: 1,990 mm
  
• Track Shoe Width: 500 mm
  
• Total Track Width: 2,490 mm
  
• Track Ground Contact Length: 2,880 mm
  
• Carrier Wheels per Side: 1
  
• Rollers per Side: 7
  
• Track Shoes per Side: 44
  

• Maximum Digging Radius: 8,300 mm
  
• Maximum Digging Depth: 5,540 mm
  
• Maximum Digging Height: 8,600 mm
  
• Maximum Dumping Height: 6,190 mm
  
• Maximum Vertical Digging Depth: 4,750 mm
  
• Maximum Digging Radius at Stopping Surface: 8,170 mm
  

                               

ID：1826640

• Brand: Hyundai
  
• Model: R110VS
  
• Year of Manufacture: 2017
  
• Hours: 9,000 hours
  
• Location: Xinjiang - Shihezi City
  

• Operating weight: 11,200 kg
  
• Excavator class: 11 tons
  
• Bucket capacity: 0.45 m³
  
• Boom length: 4,300 mm
  
• Arm length: 2,260 mm
  
• Engine: Mitsubishi D04FRC-TAA
  
• Rated power: 74 kW / 2000 rpm
  
• Cylinder configuration: 4 cylinders, 4-stroke, water-cooled
  
• Maximum torque: 44.4 N.m / 1350 rpm
  
• Fuel tank capacity: 250 L
  
• Hydraulic oil tank: 100 L
  
• Engine oil capacity: 17.5 L
  
• Hydraulic system capacity: 210 L
  
• Cooling system: 24 L water coolant
  
• Transport dimensions: 7,270 mm length × 2,490 mm width × 2,800 mm height
  
• Cabin height: 2,800 mm
  
• Track width: 500 mm
  
• Max digging radius: 7,740 mm
  
• Max digging depth: 5,090 mm
  
• Max digging height: 8,070 mm
  
• Max dumping height: 5,710 mm
  

• Main pump: dual variable displacement piston pumps, 2×112 L/min
  
• Travel hydraulic pressure: 330 MPa
  
• Swing hydraulic pressure: 240 MPa
  
• Pilot pump: gear type, 35 MPa
  
• Bucket cylinder: 1×95×65×855 mm
  
• Arm cylinder: 1×110×75×1070 mm
  
• Boom cylinders: 2×95×70×1015 mm
  

• Swing speed: 13 rpm
  
• Gradeability: 70%
  
• Travel speed: 5.5 km/h forward, 3.4 km/h reverse
  

• Urban and rural construction
  
• Pipeline installation and trenching
  
• Road and bridge maintenance
  
• Landscaping and earthmoving
  
• Utility maintenance and material handling
  

• Inspect hydraulic cylinders and hoses for leaks
  
• Check track rollers, sprockets, and idlers
  
• Regularly monitor engine oil and coolant
  
• Check boom and arm pins for wear
  
• Replace bucket teeth if worn
  

                                   

ID：1826603

• Brand: Doosan
  
• Model: DX60W ECO
  
• Year of Manufacture: 2021
  
• Hours: 5,700 hours
  
• Location: Jiangsu - Yancheng City
  

• Operating weight: 5,500 kg
  
• Excavator class: 6 tons
  
• Bucket capacity: 0.18 m³
  
• Power source: Conventional diesel
  
• Engine: YANMAR 4TNV98
  
• Rated power: 39 kW / 2200 rpm
  
• Transport width: 1,905 mm
  
• Transport height: 2,950 mm
  
• Configuration: Wheeled excavator with backhoe bucket
  
• Manufacturer: Joint venture/imported
  
• Operating hours: 5,700
  

• Urban road and sidewalk construction
  
• Landscaping and park development
  
• Small-scale foundation and trenching work
  
• Pipeline and utility installation
  
• Site maintenance and material handling
  

• Inspect hydraulic hoses and cylinders for wear or leakage
  
• Check tires and wheel hubs for integrity
  
• Verify engine oil quality and intervals for service
  
• Ensure proper lubrication of swing bearings and joints
  
• Evaluate backhoe bucket teeth for wear or replacement