Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Komatsu PC45MR Series Excavators — A Deep-Dive on Compact Power
#1
               

Overview
The Komatsu PC45MR family—featuring models like the PC45MR, PC45MR-3, PC45MR-5, and PC45MRX-1—offers tight-tail-swing hydraulic excavators ideal for urban, utility, and confined-space operations. These machines blend compact dimensions with substantial digging power and smart hydraulics.
Key Specifications & Features
Engine & Performance
  • Powered by a Komatsu 4-cylinder, direct-injection engine (model 4D88E-7) delivering around 38 hp @ 2,400 rpm .
  • Operating weight ranges between 10,700 and 11,000 lbs, depending on canopy or cab, with rubber track undercarriage .
  • Engineered for tight jobsite maneuverability, the minimal tail swing extends only about 60 mm beyond the tracks .
Hydraulics & Control
  • Equipped with Komatsu’s HydrauMind system enabling two selectable work modes that adjust hydraulic behavior for fuel savings or higher productivity .
  • Features variable displacement piston pumps and dedicated swing and blade pumps, delivering 153 L/min (40 gpm) flow to working circuits .
Dimensions & Work Range
  • Dig depth up to approximately 12 ft, and maximum reach around 19–20 ft, depending on boom and arm configuration .
  • Compact undercarriage—track width around 1.96 m—enables transport on narrow trailers or through tight spaces .
Operator Comfort & Serviceability
  • Spacious, accessible cabin or canopy with excellent visibility, comfortable suspension seat, and intuitive joystick controls .
  • Service access is simplified by wide-opening engine hoods, side panels, tilting operator station, and grouped grease points on booms .
  • Integrated KOMTRAX telematics provide monitoring for maintenance, operation history, and remote diagnostics .
Optional Equipment & Flexibility
  • Users can choose among rubber, steel, or road-liner tracks, plus optional attachments like power-angle blades and auxiliary hydraulics for tools like breakers or thumbs .
Real-World Context & Applications
Operators in tight urban settings value the PC45MR’s tight-tail frame, which allows full swing without risking damage to nearby walls or equipment. One anecdotal report highlights a landscaping contractor swapping buckets and ripper attachments quickly using the auxiliary hydraulics and retaining power, thanks to HydrauMind mode adjustments.
Terminology Quick Glossary
  • Tight Tail Swing (MR): Minimal protrusion behind the excavator’s footprint for operation in cramped areas.
  • HydrauMind: A smart hydraulic setup that optimizes power usage and control responsiveness.
  • KOMTRAX: Komatsu’s wireless machine-monitoring system offering telematics and maintenance alerts.
Recommendations & Best Practices
  • Match track type to ground conditions—rubber tracks for paved or delicate surfaces, steel for rough or abrasive terrain.
  • Utilize KOMTRAX data to schedule maintenance proactively and maintain peak hydraulic efficiency.
  • Choose auxiliary hydraulics for attachments to avoid manual coupling—enhances safety and productivity.
  • For tight areas, the minimal tail swing offers major shields against structural contact; always observe full swing clearance.
Summary of Core Attributes
  • Compact Excavator Class: 38 hp, ~10,700–11,000 lbs weight.
  • Hydraulic System: HydrauMind with selectable modes and auxiliary options.
  • Work Range: ~12 ft dig depth, ~20 ft reach.
  • Access & Maintenance: Great service access, KOMTRAX enabled.
  • Operator Environment: Comfortable seat, excellent visibility, user-friendly controls.
Conclusion
Komatsu’s PC45MR series strikes a strong balance between compactness and capability. With intuitive controls, rugged hydraulics, tight-swing design, and smart service features, it’s ideal for operators needing precision, power, and flexibility in confined job sites. Want a spec sheet, attachment list, or maintenance schedule? I’d be happy to help further.
Reply


Possibly Related Threads…
Thread Author Replies Views Last Post
  Changing Control Patterns on Komatsu PC200 and PC300 Excavators MikePhua 0 9 27 minutes ago
Last Post: MikePhua
  Smallest Compact Excavators with Thumb Attachments MikePhua 0 12 36 minutes ago
Last Post: MikePhua
  Komatsu D41P-6: A Reliable Machine for Construction and Excavation MikePhua 0 10 37 minutes ago
Last Post: MikePhua
  Hydraulic Control Challenges in the Komatsu PC200-6 MikePhua 0 12 42 minutes ago
Last Post: MikePhua
  Using a 12-Inch Bucket with a Thumb on Kubota KX057 and U48-5 Excavators MikePhua 0 16 10 hours ago
Last Post: MikePhua
  Understanding Warning Lights on the CAT 299D3 Compact Track Loader MikePhua 0 12 10 hours ago
Last Post: MikePhua
  Adding Counterweight to a CAT 259D Compact Track Loader MikePhua 0 12 10 hours ago
Last Post: MikePhua
  Choosing the Right Compact Track Loader for Long-Term Ownership MikePhua 0 12 10 hours ago
Last Post: MikePhua
  Komatsu HD785-7 Dump Trucks in Modern Mining Operations MikePhua 0 13 10 hours ago
Last Post: MikePhua
  Snap-Tite Quick-Xchange for Excavators: Revolutionizing Attachment Swapping MikePhua 0 11 11 hours ago
Last Post: MikePhua
  Choosing Between a 1991 Komatsu PC40 and a 2002 New Holland EC35 for Entry-Level Excavation MikePhua 0 14 11 hours ago
Last Post: MikePhua
  Carter Mini Excavators Show Surprising Build Quality and Performance MikePhua 0 8 11 hours ago
Last Post: MikePhua
  The CAT D8H Dozer: The Sound of Power and Performance MikePhua 0 7 11 hours ago
Last Post: MikePhua
  The Rise of Ultra-Large Excavators in Demolition and Heavy Earthmoving MikePhua 0 9 11 hours ago
Last Post: MikePhua
  Introduction to Deere M-Series Bunchers: New Era in Forestry Equipment MikePhua 0 10 Yesterday, 08:28 PM
Last Post: MikePhua

Forum Jump:


Users browsing this thread: 1 Guest(s)