Sarah Jenkins, CEMP
Fleet Economics & Machinery Analyst
Certified Equipment Manager Specialist analyzing heavy construction equipment life cycles, operating cost economics, and fuel burn metrics.
Editorial Role
What Sarah Jenkins, CEMP Covers
Sarah Jenkins, CEMP contributes practical heavy equipment guidance focused on specs, maintenance intervals, diagnostic workflows, fleet operating costs, and model-to-model comparison decisions. Pages credited here are intended for equipment owners, fleet managers, mechanics, estimators, and buyers who need clear numbers before checking the final OEM manual or dealer documentation.
Technical pages are written to separate verified specification fields from editorial planning estimates such as fuel burn and hourly operating cost. Critical values such as lift capacity, transport dimensions, fluid specifications, torque values, and safety procedures should always be verified against the exact serial range and configuration.
Machine Coverage
Equipment Profiles Referenced by This Author
Published Technical Guides
Maintenance, diagnostics, fleet economics, and equipment comparison articles by Sarah Jenkins, CEMP.
Komatsu WA320-8 vs Cat 950 GC vs Volvo L90H: Mid-Size Wheel Loader Comparison
Compare Komatsu WA320-8, Cat 950 GC and Volvo L90H wheel loaders by bucket range, operating weight, fuel burn, tire cost, truck loading, yard work and ownership fit.
Volvo EC220E Operating Cost Per Hour: Fuel Burn, Undercarriage, Hydraulics and Ownership
Estimate Volvo EC220E operating cost per hour with fuel burn, undercarriage reserve, hydraulic maintenance, attachments, idle time, utilization and ownership assumptions.
Volvo L90H Operating Cost Per Hour: Fuel, Tires, Bucket Wear, Snow Work and Yard Cycles
Estimate Volvo L90H wheel loader cost per hour with fuel burn, tires, bucket wear, brakes, snow work, roading, idle time, maintenance and ownership.
CASE 580 Super N WT Operating Cost Per Hour: Fuel, Tires, Brakes, Stabilizers and Backhoe Wear
Estimate CASE 580 Super N WT operating cost per hour with fuel burn, tires, brakes, stabilizers, loader pins, backhoe wear, transport and ownership.
CASE 580 Super N WT vs JCB 3CX vs John Deere 310 P-Tier: Backhoe Loader Comparison
Compare CASE 580 Super N WT, JCB 3CX and John Deere 310 P-Tier backhoe loaders by dig depth, roading, loader work, stabilizers, brakes, tires and ownership fit.
Cat 320 Hourly Operating Cost Breakdown: Fuel, Maintenance, Tracks & Ownership
Cat 320 cost per hour guide using 5.2 gal/hr fuel burn, diesel price, DEF, 500-hour maintenance, undercarriage reserve, attachment wear, utilization, ownership and job-bid assumptions.
Caterpillar 320 vs Komatsu PC200: 20-Ton Excavator Specs, Fuel Burn and Ownership Comparison
Compare Cat 320 vs Komatsu PC200-11 by operating weight, horsepower, dig depth, bucket capacity, hydraulic flow, fuel burn estimate, dealer support, attachments, transport and ownership cost.
Cat 305 CR Operating Cost Per Hour: Fuel, Rubber Tracks, Attachments and Trailer Math
Estimate Cat 305 CR operating cost per hour with fuel burn, rubber tracks, bucket wear, attachments, trailer payload, idle time, maintenance and ownership assumptions.
Volvo EC220E vs Cat 320 vs Komatsu PC200: 22-Ton Excavator Specs, Cost and Job Fit
Compare Volvo EC220E, Cat 320 and Komatsu PC200 class excavators by transport weight, dig depth, hydraulics, dealer support, fuel planning and ownership fit.
Cat 305 CR vs Kubota KX040 vs John Deere 50 P-Tier: Compact Excavator Buying Comparison
Compare Cat 305 CR, Kubota KX040 and John Deere 50 P-Tier compact excavators by tight access work, trailer payload, attachments, rubber tracks and dealer support.
Hitachi ZX350LC-7H Cost Per Hour: Fuel, Tracks, Bucket Wear and Ownership
A practical Hitachi ZX350LC-7H cost-per-hour guide for mass excavation, truck loading, fuel burn planning, undercarriage reserve, bucket wear, maintenance and ownership assumptions.
Hyundai HX220A L Buying and Rental Checklist: 22-Ton Excavator Specs, Condition and Job Fit
A Hyundai HX220A L buyer and rental checklist for contractors comparing 22-ton excavators by weight, dig depth, hydraulics, service history, transport fit and hourly cost.