Kubota KX163

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Kubota KX163

Frequently Asked Questions about Kubota KX163 Excavator

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The Kubota KX163 is a 5.6-ton compact crawler excavator powered by the Kubota V2607-E3 or V2607-DI-ET06 diesel engine. Below are the detailed specifications from the official manufacturer :

Complete Specifications Table:

Parameter Value
Model KX163 / KX163-5 / KX163-6
Operating Weight 5,600 kg (12,350 lbs)
Engine Model V2607-E3 / V2607-DI-ET06
Engine Type 4-cylinder, water-cooled diesel
Rated Power 35.5 kW (48.3 PS / 48 HP) at 2,200 rpm
Displacement 2,615 cc (2.615 L)
Fuel Tank Capacity 68 L
Bucket Capacity 0.19 m³
Standard Bucket Width 680 mm (with teeth) / 630 mm (without teeth)
Max Digging Depth 3,690 mm (12.1 ft)
Max Digging Radius 6,140 mm (20.1 ft)
Max Digging Height 5,685 mm (18.7 ft)
Max Dumping Height 3,950 mm (13.0 ft)
Max Vertical Digging Depth 2,685 mm (8.8 ft)
Bucket Digging Force 40.1 kN (4,090 kgf / 9,020 lbs)
Boom Side Shift (L/R) 625 mm / 815 mm
Tail Swing Radius 1,045 mm (rear) / Ultra-short tail swing (65mm beyond track)
Travel Speed (Low/High) 2.7 km/h / 4.6 km/h (1.7/2.9 mph)
Swing Speed 9.3 rpm
Gradeability 30°
Transport Length 5,500 mm (18.0 ft)
Transport Width 1,960 mm (6.4 ft)
Transport Height 2,550 mm (8.4 ft)
Track Width 400 mm (steel tracks)
Track Length (total) 2,500 mm
Track Roller Distance 1,990 mm
Track Gauge 1,560 mm
Ground Clearance 310 mm
Dozer Blade Width 1,960 mm
Dozer Blade Height 410 mm
Dozer Lift (Up/Down) 440 mm / 405 mm
Hydraulic Pump Type 2 variable pumps + 2 gear pumps
Swing Motor Type Piston hydraulic motor
Travel Motor Type 2-speed piston hydraulic motor

Engine Emission Standards: The KX163-5 meets China Stage III (equivalent to EU Stage IIIA / EPA Tier 3) emission standards .

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The ultra-short tail swing (or “zero tail swing” design) on the Kubota KX163 means the machine’s rear end extends only 65mm (2.6 inches) beyond the track width during rotation . This makes it one of the most space-efficient excavators in its 5.6-ton class.

Key Benefits and Data:

  1. Exceptional Worksite Safety – Eliminates risk of rear-end collisions with walls, traffic, or workers. The operator doesn’t need to constantly check the rear swing radius when working in confined spaces .

  2. Superior Space Efficiency – Can operate in spaces just wide enough for the machine itself. The rear minimum turning radius is only 1,045 mm (41 inches), while the front turning radius is 2,460 mm (reducing to 2,015 mm when swinging) .

  3. Complemented by Boom Side Shift – The KX163 is equipped with a boom side shift mechanism that allows the boom to move left 625 mm and right 815 mm without moving the entire machine . Combined with ultra-short tail swing, this enables digging directly against walls and foundations without frequent repositioning.

  4. Proven Technology – Kubota has been the world’s #1 selling compact excavator manufacturer for over 20 years, largely due to pioneering short-tail-swing technology that balances compact dimensions with excellent stability .

Why This Matters for Your Application:

  • Urban Construction Sites: Work in alleys as narrow as 2 meters wide

  • Indoor Demolition: Operate safely inside buildings with limited clearance

  • Roadside Work: Dig parallel to traffic barriers without blocking adjacent lanes

  • Trenching Against Walls: The boom side shift lets you dig directly along foundations

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The Kubota KX163 features a versatile hydraulic system that supports a wide range of attachments, making it suitable for multiple applications from digging to demolition .

Compatible Attachments and Applications:

Attachment Type Best Applications Notes
Buckets (Multiple Sizes) Trenching, grading, general excavation Standard 0.19m³ bucket; options include rock bucket, skeleton bucket, cleaning bucket, tilt bucket, ditch bucket
Hydraulic Breaker Light demolition, concrete breaking, rock excavation Matches the KX163’s 5.6-ton weight class
Auger Fence posts, tree planting, drilling foundations Ideal for landscaping and agricultural projects
Compactor Soil and asphalt compaction Creates stable surfaces for paving projects
Crusher Bucket On-site material crushing Crush concrete and rock directly at the job site
Clamshell Bucket Material handling, dredging Efficient for loading loose materials
Rotary Screen Soil screening, debris separation Useful for landscaping and site cleanup
Grapple Demolition, scrap handling, forestry Requires hydraulic thumb configuration

Key Attachment Features :

  • The KX163’s auxiliary hydraulic system provides ample flow for most attachment types

  • Ensure attachment weight is compatible with the machine’s 1,145 kg (2,524 lbs) front lifting capacity

  • Always verify attachment flow requirements match the excavator’s hydraulic output before purchase

Selection Tip: Narrow buckets are ideal for deep trenching, while wider buckets are better for bulk material removal. For breaking through rocky terrain, a hydraulic breaker is essential. For borehole projects in landscaping and agriculture, an auger is the right choice .

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The Kubota KX163 is designed for long-term efficiency with a 68-liter (18-gallon) fuel tank that enables extended operation between refueling stops . Below is the comprehensive maintenance schedule based on manufacturer recommendations and industry best practices.

Fuel Efficiency Data:

  • Fuel Tank Capacity: 68 L – suitable for long-duration projects without frequent refueling

  • The energy-efficient Kubota V2607 engine provides steady power output without excessive fuel consumption

  • Operators can maximize fuel efficiency by maintaining proper track tension, clean air filters, and operating at optimal power ranges

Recommended Maintenance Schedule:

Component Interval Maintenance Action
Daily (Every 8-10 hours)
Visual Inspection Every start Check for leaks, damage, loose bolts
Engine Oil Level Daily Check and top up as needed
Hydraulic Fluid Level Daily Check sight glass or dipstick
Coolant Level Daily Check radiator and overflow tank
Track Inspection Daily Check for damage, foreign objects, proper tension
Every 50 hours / Weekly
Air Pre-cleaner 50 hours Clean/inspect; check radiator fins for debris
Greasing 50 hours Lubricate all pivot points (boom, arm, bucket linkage)
Track Tension Weekly Adjust to manufacturer sag specification (typically 15-20mm)
Every 250 hours
Engine Oil & Filter 250 hours Replace with Kubota approved oil
Hydraulic Filter 250 hours Replace as recommended
Fuel Filter 250 hours Replace main and inline filters
Every 500 hours
Hydraulic Oil 500-1,000 hours Sample and analyze; replace if contaminated
Swing Bearing Grease 500 hours Lubricate and inspect for wear
Every 1,000 hours
Engine Valve Clearance 1,000 hours Check and adjust
Fuel Injectors 1,000 hours Inspect and clean/replace as needed

Undercarriage Life Expectancy (with proper maintenance):

Component Expected Life Key Factors
Steel Tracks 3,000 – 5,000 hours Ground conditions, operation technique
Track Rollers 2,500 – 4,000 hours Regular cleaning, debris removal
Sprockets 3,000 – 5,000 hours Replace in matched sets with tracks
Pins & Bushings 4,000 – 6,000 hours Regular greasing is critical

Longevity Tips:

  • Clean the machine’s exterior daily to prevent debris from causing premature wear

  • The KX163’s digital LCD monitoring system provides 90 days of work record storage and maintenance time reminders – use these alerts to stay on schedule

  • The LCD system also shows real-time data including fuel level, water temperature, engine RPM, and will display immediate warnings for any abnormal conditions

  • The automatic lubrication system (featured on later models) reduces manual greasing intervals

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Based on operator feedback and equipment dealer experiences, here are the key considerations for Kubota KX163 owners along with diagnostic guidance.

Most Common Issues and Solutions:

Issue Category Specific Problem Diagnosis & Solution
Hydraulic System Poor performance or sluggish operation Check hydraulic fluid level first – if low, inspect for leaks. Clogged filters or contaminated fluid are common causes. Replace filters at specified intervals
Engine Performance Difficulty starting or power loss Check battery connections and condition. Clean or replace fuel injectors if erratic operation occurs. Ensure air filter is clean
Fuel System Loss of power when hot / hard starting Check all fuel filters including inline and banjo union filters. Contaminated fuel or blocked injectors are common on V2607 engines
Cooling System Overheating Dirty radiator fins and blocked airflow are primary causes. Clean the cooling package thoroughly and verify fan operation
Undercarriage Premature track wear Caused by abrasive ground conditions or incorrect tension. Inspect regularly, maintain proper tension, and replace worn components in matched sets
Electrical LCD display issues / warning lights The digital monitoring system shows immediate fault warnings. Check error codes displayed – refer to service manual for code definitions

Advanced Diagnostics Using the LCD Monitor :

The KX163’s intelligent LCD monitoring system features:

  • Real-time data display: Hour meter, fuel level, water temperature, engine RPM

  • Immediate fault warnings: Abnormal conditions trigger instant display alerts

  • 90-day work record storage: Track machine usage history

  • Maintenance reminders: Time-based alerts for scheduled service

Preventive Maintenance Checklist to Avoid Issues :

  1. Daily: Inspect hydraulic hoses for leaks, damage, or contaminants

  2. Weekly: Check track tension and adjust as needed

  3. Regular: Lubricate joints and pivot points to reduce friction and ensure smooth operation

  4. Scheduled: Replace engine oil, filters, and hydraulic fluid at manufacturer-recommended intervals

Fuel Efficiency Optimization Tips :

  • Maintain proper track tension – affects fuel economy

  • Keep air filters clean – dirty filters increase fuel consumption

  • Operate at optimal power range – reduces waste and improves efficiency

  • Use high-quality fuel – ensures consistent, cost-effective operation

Parts Compatibility Note: The KX163 shares components with other Kubota models including KX135, KX155, KX161, and U50-5. Overhaul kits for the V2607 engine are also compatible with Bobcat S550, S570, S590, and T590 models . The hydraulic oil cooler is interchangeable with KX057-4, U48, and U55 models .

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