Machine classes: choose the work and compare the configuration

Choose a machine class by its required work, attachments, access and operating limits. Then compare actual configurations rather than treating “compact,” horsepower or a single capacity figure as the complete specification. The class guides below separate tractor, loader, digging, lifting and production tasks.

A useful comparison keeps the measurement label

For example, Deere’s 3038E specification lists 5.3 gpm implement flow and 9.3 gpm total flow. A tool requiring 8 gpm is not established as a match by the total figure. Similarly, a bucket tipping load cannot replace a fork rating at a specified load center.

Tractors

• Subcompact tractors: match the mower, hitch and loader package

  Subcompact tractors should be selected as complete mower, loader and rear-implement packages, with fitment and usable geometry checked before acreage or engine power decides the offer. Deere’s Canadian 60D High Capacity AutoConnect deck reference lists compatibility with 1023E, 1025R, 1026R and model-year 2017-and-newer 2025R tractors, a 1–4 inch cutting-height range and approximately 258 lb deck weight. That list belongs to one deck rather than every mid-PTO mower.

  Deere separately identifies the 1025R rear hitch as limited Category 1, which does not certify every implement’s lift travel or clearance.

• Compact utility tractors: compare implement flow and usable lift

  Compact utility tractors should be selected from the implement, loader and access requirements, with the fitted hydraulic circuits and lift measurement points identified. Engine power alone does not establish that a hydraulic attachment or rear implement will work. Deere’s Canadian 3038E page lists 4.0 gpm steering flow, 5.3 gpm implement flow and 9.3 gpm total output.

  An expressly assumed attachment needing 8 gpm cannot be called a flow match by comparing its requirement with the 9.3 gpm total: the relevant listed implement figure is 5.3 gpm, a 2.7 gpm shortfall before the rest of the compatibility checks.

• Utility tractors: match PTO options, hitch and field requirements

  Utility tractors should be compared by the PTO speeds, implement connections and hydraulic functions fitted, with hitch geometry and load limits retained separately. The utility label cannot guarantee a 1,000 rpm PTO or one identical hitch package. Deere’s Canadian 5075E reference distinguishes independent 540 rpm for SyncShuttle from 540/540E for the listed PowrReverser and eHydro packages, and identifies a Category 2 rear hitch convertible to Category 1.

  Economy 540E still means the specified 540 rpm shaft output at its designated lower engine speed, rather than 1,000 rpm output.

• Row-crop tractors: track width & drawbar power

  Row-crop tractors should be selected around the crop and implement geometry, required field outputs and the actual fitted package. Wheel-center spacing is only part of crop clearance: tire width, steering movement, growth and implement alignment also matter. With expressly assumed 30-inch rows, 60-inch and 90-inch wheel-center settings span two and three row intervals, but neither arithmetic result approves a tractor setup.

  Deere’s Canadian 8R 340 reference identifies a Category 4N/3 rear hitch, a designation for that listed machine rather than every row-crop tractor.

Loading, digging and handling

• Skid-steer loaders: capacity, lift and flow

  Skid-steer loaders should be selected from the rated operating capacity on its stated basis, required lift path and the complete attachment package. A tipping-load figure is not extra working payload, and a mounting plate that connects does not establish compatibility. Bobcat’s non-current S740 reference lists 3,100 lb rated operating capacity and 6,200 lb tipping load, a 50% relationship for that listed machine.

  Its auxiliary-flow figures are 23 gpm standard and 30.5 gpm high flow, with the latter identified as optional equipment.

• Compact track loaders: rating basis, ground conditions and ownership cost

  Compact track loaders should be compared with the capacity basis, attachment configuration, ground conditions and running-gear costs kept beside the model name. A larger percentage-of-tipping label does not describe a different machine. The manufacturer’s 2025 Bobcat specification booklet, hosted by an equipment listing service, gives the T76 2,900 lb rated operating capacity at 35% of tipping and 4,143 lb at 50%.

  Dividing each by its stated fraction gives about 8,286 lb with rounding; that checks the relationship without authorizing a particular lift.

• Compact wheel loaders: compare the fitted lift and steering package

  Wheel loaders should be compared in the fitted lift, coupler, attachment and tire configuration, with tipping figures kept distinct from permitted working loads. Cat’s 908 AEHQ8412-02 specification, hosted by its dealer, separates standard and high-lift HPL-V bucket configurations. Their full-turn tipping figures are 4,035 kg and 3,468 kg respectively, a 567 kg difference rather than one capacity retained at the taller lift geometry.

  The listed bucket operating masses are 6,637 kg and 6,735 kg, with the source’s equipment and measurement notes retained.

• Mini excavators: reach, tail swing, transport

  Mini excavators need a complete access envelope, fitted weight and usable working range; the class name does not establish pickup towing, unrestricted indoor use or lift capacity at maximum reach. Cat’s 306 CR page lists a 6,410 kg minimum canopy operating weight based on rubber tracks, operator, full fuel, standard stick, fixed blade and no bucket. Bucket, coupler and other equipment must be resolved for the actual transported package.

  At the smaller end, Bobcat’s E10e leaflet distinguishes a 710 mm retracted undercarriage width from 1,100 mm expanded width, and 1,220 kg operating weight with TOPS canopy and bucket from 1,121 kg transport mass without attachment.

• Excavators: lift ratings, forces, undercarriage

  Excavators should be compared with the fitted boom, arm, bucket and working-range drawing identified, then checked against the actual lift and transport requirements. A position that can be reached is not automatically a position at which the required load may be lifted. Kato’s HD512III catalog illustrates the geometry difference: its 2.10 m short arm has 5,220 mm maximum digging depth, the 2.50 m standard arm has 5,620 mm, and the 3.00 m long arm has 6,130 mm.

• Backhoe loaders: the two-machine compromise

  Backhoe loaders combine front loading and rear excavation, so compare both working ends, their fitted geometry and the travel pattern before choosing one machine for several tasks. The historical Deere 310D brochure illustrates why the dipper arrangement matters: maximum digging depth is 14 ft 6 in for its standard backhoe and 18 ft 3 in with the extendable dipper extended. That 3 ft 9 in difference is not an increase in every reach or lift rating.

• Telehandlers: the load chart is the spec

  Telehandlers should be selected from the applicable attachment load chart at the actual height, reach and load center, with the required machine setup identified. Maximum capacity, height and forward reach describe separate limits. Genie’s GTH-5519 product reference lists 4,400 lb at maximum height and 1,900 lb at maximum reach, a 2,500 lb difference between different operating positions rather than one load available throughout the boom envelope.

  Its cited operator manual identifies a 24-inch load center for the stated maximum-height figure; match the machine’s serial range and chart before using it.

• Material handlers: reach, elevating cabs and grapples

  Material handlers should be selected for the material, working envelope and configured attachment, with reach and component ratings kept separate from the permitted handled load. Liebherr’s LH 30 M Industry Litronic reference lists 14 m reach and a 26,500–29,100 kg operating-weight range. That 2,600 kg span shows why the lowest catalog mass cannot describe every offered package, and 14 m reach does not identify capacity at 14 m.

  Indexator’s GV 12 rotator separately lists 100 kN maximum static axial load and 50 kN maximum dynamic axial load.

• Log loaders: knuckleboom, grapple and carrier

  Log loaders should be compared at the actual working radius and lifting point, with the carrier, boom, grapple and applicable stability information identified. A hydraulic bare-pin figure is not automatically the allowable timber load. Tigercat’s 875E reference gives the butt-n-top/power-clam boom a 10.92 m maximum radius and 8,390 kg hydraulic bare-pin lift at 9.14 m.

  The live-heel package reaches 12.62 m and lists 7,480 kg on the same labeled hydraulic basis at 9.14 m.

Earthwork and construction

• Crawler dozers: traction, blades, drive types

  Crawler dozers should be compared for the actual pushing or grading task, with traction, power, blade, running gear and fitted equipment considered together. More engine power does not solve every grip limitation, but power still matters when useful force must be maintained at speed. For an expressly assumed 100 kN tractive force, 1 m/s requires 100 kW of ideal mechanical output and 2 m/s requires 200 kW, before losses.

  Deere’s 850L brochure identifies 168 kW net rated power at 1,700 rpm and a dual-path hydrostatic drive, a specific counterexample to claims that hydrostatics belong only on small grading machines.

• Motor graders: moldboard, wheelbase, blade pull

  Motor graders should be compared by moldboard geometry, available adjustments, drive configuration and the grade-control package needed for the work. A blade’s full length is not always its width projected across the pass. Deere’s cited G-series brochure lists a 3.66 m, 12 ft base moldboard for the 770G/GP with 610 mm height and 22 mm thickness.

  In a simple expressly assumed plan-view calculation, a 12 ft edge angled 30 degrees away from perpendicular to travel projects about 10.39 ft across the pass, before overlap and other geometry.

• Dump trucks: articulated vs rigid, payload

  Dump trucks for off-highway work should be matched to the actual material, loading method, haul route and discharge arrangement. Rated payload and body volume impose different checks; neither articulated nor rigid chassis labels guarantee safe travel on weak ground or slopes. Cat’s cited 745 configuration lists a 41 t payload and 26 m³ heaped body under SAE 2:1, while the same page separately lists a 27.3 m³ tailgate-heaped option.

  Dividing 41 by 26 gives about 1.58 t/m³, a relationship between two specifications rather than permission to heap every material.

• Compactors and rollers: amplitude, load, density

  Compactors and rollers should be selected for the material, lift, access and specified acceptance result, with machine settings kept separate from the measurements that prove the layer passes. BOMAG’s published BW 120 AD-5 configuration lists 2,700 kg weight and 1,200 mm working width. Total mass divided by one drum’s width does not establish that drum’s static linear load; its actual share of load is needed.

  With an expressly assumed 1,400 kg drum load over 120 cm, the arithmetic gives about 11.67 kg/cm, not a BW 120 AD-5 specification.

• Asphalt pavers and cold planers explained

  Asphalt pavers and cold planers perform different jobs: a paver places and screeds a mat, while a planer removes material with a milling drum. Choose working width, layer or cut depth, material supply and removal system for the project; engine rating alone leaves those requirements unanswered. Cat’s AP355 brochure identifies a 3.8 m³ hopper; that storage volume does not establish tonnes per hour.

  Wirtgen’s cited US brochure gives the W100Fi a 1,000 mm milling width and 0–330 mm depth range, which are separate dimensions rather than a promise of production at maximum depth.

• Mobile cranes: truck, rough terrain and all terrain

  Mobile cranes should be selected from the actual load radius, height, configuration and site requirements, using the chart and notes for the proposed lift. A maximum-capacity label does not establish the capacity at another radius or on another support arrangement. Broderson’s RT-300-C technical sheet identifies 30,000 lb at a 10 ft radius and separately states that its capacity headline is on outriggers.

  Keep those conditions rather than assigning 30,000 lb to every position or on-tire operation.

• Crawler cranes: lattice boom, tracks and capacity

  Crawler cranes require the actual boom, jib, counterweight and track configuration to be matched to the load, working radius and support conditions. Tracks do not establish safe ground or unrestricted travel with a suspended load. Liebherr’s LTR 1060 is a telescopic crawler with a 60 t maximum load capacity and a 40 m telescopic boom; those separate headline figures do not promise 60 t at 40 m.

  Its charts and permitted configurations govern the lift.

Agriculture and forestry

• Combine harvesters: threshing systems and ratings

  Combine harvesters must be compared in the crop, header and separation configuration that will do the work, with grain quality and measured loss kept beside throughput. Engine power, a capacity class or peak unloading rate cannot establish the acceptable field result. Deere’s Australian X-series update lists the X9 1100 at 186.7 litres per second peak unloading and a 16,210-litre standard tank, with an optional 550-bushel tank.

  The page gives that option as 19,381.5 litres in its model summary and rounded to 19,400 litres in the feature description; the latter identifies heavy-duty final drives, while the summary footnote requires 710 duals or tracks.

• Balers and swathers: bale types and ratings

  Balers and swathers must fit the intended bale format, crop treatment and harvest sequence rather than a horsepower category alone. A mower or windrower prepares the cut crop, while a baler forms and ties or wraps material for the chosen handling and preservation system. Massey Ferguson’s Australian MF 1840 specification gives a 356 × 457 mm bale cross-section, 100 plunger strokes per minute and 1,900 mm pickup working width.

  None of those figures establishes bale mass or completed bales per minute.

• Sprayers: rate, boom and nozzle ratings explained

  Sprayers should be matched to the intended application, configured tank circuits, boom and control functions, carrier access and refill operation. Nominal total tank volume does not establish usable volume for either circuit or acres completed between refills. Deere’s See & Spray Ultimate reference describes the 410R’s 1,000 US-gallon system as a 650/350-gallon split.

  At an expressly assumed continuous 20 US gallons per acre, 650 gallons represents 32.5 acres and 350 gallons represents 17.5 acres before reserves and other conditions; neither result is a product dose or a selective-spraying coverage promise.

• Forestry machines: harvesters and skidders

  Forestry machines should be selected as a harvest system, with cutting and processing, extraction, sorting and loading assigned to the equipment that performs each role. A harvester, forwarder, feller buncher, skidder and log loader are not interchangeable names for the same job. Deere’s 1510G forwarder brochure lists a 15,000 kg load rating and 8.5 m or 10 m maximum boom-reach arrangements; the load-bed figure does not rate the crane at either reach.

Cross-machine comparisons

• Engine, PTO and drawbar horsepower: compare the same operating point

  Horsepower is explained by its measurement location and operating point: engine, PTO, drawbar and hydraulic outputs are different quantities. Compare the task’s required output with a relevant rating or test, retaining its measurement basis and operating point. Deere’s Canadian 3038E page lists 27.4 kW gross engine power under SAE J1995 and 22.4 kW PTO power.

  The 5.0 kW difference is about 18.2% of the gross figure, a comparison of those published ratings rather than a measured efficiency for every compact tractor.

• Transmission types: Gear, hydrostatic and powershift transmissions

  Transmission types describe different ratio, reversing and control arrangements. Compare the actual fitted tractor and duty using documented performance and repair costs. A shuttle feature does not specify the whole gearbox or authorize a moving direction change.

  Deere’s Canadian 5075E page distinguishes SyncShuttle and PowrReverser packages, including dry and wet clutch descriptions; the model name alone cannot identify the offered arrangement. Fendt’s 900 Vario MT reference describes continuously variable power-split drive using hydrostatic components and a hydraulic oil supply separate from transmission oil.

• Tractor sizing by acreage: task ratings and coverage time

  Tractor sizing by acreage starts with the actual work and its completion window, then checks whether the proposed tractor can power, carry and operate the required equipment. Area alone cannot select a horsepower, loader rating or transport package. Iowa State’s field-capacity method uses working width, travel speed and field efficiency; with width in feet and speed in miles per hour, divide their product by 8.25 to estimate acres per hour.

• Tractor tire types and ballast options

  Tires and ballast options require the approved machine package, actual axle loads, speed and work to be identified before choosing tread or added weight. Titan’s R14 introduction describes a hybrid combining R-1 agricultural, R-3 turf and R-4 industrial elements; these familiar patterns are not the whole market or a complete performance ranking. Firestone describes its R-1W center lug depth as approximately 25% deeper than standard R-1, which is a depth comparison rather than 25% more traction.

• Equipment serial numbers: match the machine, engine and parts range

  Serial numbers and model decoding help match equipment to its own parts and documentation when the complete machine, engine and relevant assembly identifiers are kept separate. A model badge alone cannot establish every production change, and a lookup cannot prove what has been replaced since manufacture. Perkins’ engine-number guide describes a build-list portion typically containing 2–4 letters followed by 4–5 numbers, with full serial entry preferred for its parts search.

Carry the complete requirement into a model comparison

Find an identified model in the Tractor and compact equipment models: maker reference. Use equipment comparisons for alternatives and buying guides for the condition of the actual machine. Neither a class label nor a specification lookup establishes condition or safe operation at a particular site.