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Michigan Thumb \u2014 Dark Red Kidney and Navy Bean Harvest<\/h3>\n
Michigan is the largest dry kidney bean producing state in the U.S. The Thumb region’s tight late-summer harvest window \u2014 typically 2 to 4 weeks between optimal pulling conditions and the first frost \u2014 puts serious pressure on threshing capacity. At 2.6 ha\/h maximum capacity and 3,200 mm working width, the 4DQ-5 can process 20 to 25 acres per operating day under good conditions, covering a 400-acre kidney bean block within a typical 18 to 22-day threshing window on large commercial operations.<\/p>\n
Red River Valley \u2014 Navy Bean and Pinto Bean Threshing<\/h3>\n
The flat, large-field structure of the Red River Valley and the surrounding North Dakota and Minnesota growing region suits the 4DQ-5’s side-pull configuration well \u2014 long straight rows reduce headland turn frequency and allow the machine to spend a higher percentage of each pass in productive threshing mode. Navy bean windrows in this region are typically thinner than kidney bean windrows, which allows operating at the upper end of the 4 to 8 km\/h speed range and achieving the 2.6 ha\/h capacity figure consistently.<\/p>\n
Idaho and Wyoming \u2014 Pinto Bean and Black Bean Programs<\/h3>\n
Pinto bean programs in southern Idaho, northern Nevada, and Wyoming typically operate on irrigated ground with late-season soil conditions that are soft enough to make tractor wheel tracks in standard configurations. The 4DQ-5’s 18.4-30 tires at 2,300 mm wheel track distribute the machine’s weight across a wide footprint that minimizes compaction in the post-harvest field \u2014 important in these markets where the field must be prepared for winter wheat or cover crops within weeks of bean harvest.<\/p>\n
Custom Threshing Service Operations<\/h3>\n
The 4DQ-5 is well-suited as the core machine for a custom threshing service that serves multiple farms across a regional kidney bean growing area. At a custom harvest rate of $40 to $80 per acre for threshing services in most U.S. dry-bean regions, a machine covering 25 acres per day at the low end of the capacity range generates $1,000 to $2,000 of daily service revenue during the harvest season. Custom operators who pair the 4DQ-5 with one or two 4BYH or 4BYHD pullers from our lineup offer a complete turn-key harvest service \u2014 pull, windrow, thresh, and fill grain cart \u2014 without the farm needing to own any of the harvesting equipment.<\/p>\n
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Six Design Advantages of the 4DQ-5 for Commercial Kidney Bean Programs<\/h2>\n
1. Single-pass threshing from windrow to grain tank.<\/strong> The 4DQ-5 eliminates the intermediate step of transferring loose threshed beans between machines. Windrow in at the header and clean grain out into the tank in a single continuous operation \u2014 no loose bean piles in the field that require secondary collection equipment.<\/p>\n2. Large-capacity grain tank reduces field logistics burden.<\/strong> The 5.06 m\u00b3 grain tank holds 3,800 to 4,050 kg of dry beans \u2014 more than most grain carts used in smaller-scale operations, and enough to complete one or more full field passes before requiring a truck or cart alongside for unloading. Operations with a dedicated grain cart on the headland can achieve near-continuous field coverage without any full field stops.<\/p>\n3. Adjustable concave clearance preserves food-grade seed quality.<\/strong> The concave-to-drum clearance is field-adjustable to match the day’s pod dryness. This direct control over threshing aggressiveness is the most important lever for maintaining the seed coat integrity required for food-grade kidney bean markets. Operators who monitor and adjust concave clearance throughout the day as pods become progressively drier consistently produce lower seed coat cracking rates than fixed-clearance equipment.<\/p>\n4. Side-pull configuration eliminates tractor-wheel contamination of windrows.<\/strong> The drawbar hitch offset positions the tractor to the side of the windrow, preventing tire-induced bean losses and soil contamination in the intake zone. This is the correct configuration geometry for equipment of this width and weight class \u2014 a detail that affects every pass made throughout the harvest season.<\/p>\n5. ISO 9001 manufacturing with national subsidy eligibility.<\/strong> The 4DQ-5 is manufactured under the ISO 9001 quality management system and is listed on the national agricultural machinery purchase subsidy directory. U.S. buyers should confirm current USDA EQIP and state-level programs applicable to specialty crop harvest mechanization \u2014 our U.S. team can provide documentation to support subsidy applications.<\/p>\n6. Matched to the 4BYH and 4BYHD puller series in the same lineup.<\/strong> Ordering the pulling stage and threshing stage from the same source means width compatibility is confirmed before either machine ships, parts stocking for both machines is coordinated from the same California warehouse, and the technical team that supports your baler also supports your thresher throughout the season.<\/p>\n<\/p>\n
Maintenance Schedule and Wear Parts<\/h2>\n
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Pre-season inspection and service on the 4DQ-5 takes 4 to 6 hours and covers the following areas. Completing this work before the harvest window opens prevents the mid-season breakdowns that cause bean losses from over-dried windrows sitting uncollected during a repair delay.<\/p>\n
Threshing drum:<\/strong> Inspect drum tines and bar ends for wear. Worn tines reduce threshing effectiveness without giving visible external symptoms \u2014 measure tip depth against the factory specification in the operator manual and replace any tine set below the minimum profile. Check the drum shaft bearings for play (neither radial nor axial movement should be detectable by hand).<\/p>\nThreshing concave:<\/strong> Inspect all concave bars for cracks, deformation, or loose mounting hardware. A cracked or loose concave bar can cause catastrophic drum damage during the first loaded pass. This inspection takes 10 minutes and prevents the most expensive single failure mode on the machine.<\/p>\nCleaning system:<\/strong> Check the air fan drive belt tension and condition. Inspect sieve sections for distortion or broken aperture bars that would allow bean-sized material to pass through prematurely. Check the sieve drive eccentric mechanism for lubrication and wear.<\/p>\nGrain elevator:<\/strong> Inspect chain tension and bucket mounting bolts. A loose elevator bucket creates a blockage in the tank inlet \u2014 the grain tank must be fully cleared to access this component in the field, making a harvest-season repair expensive in time and bean losses.<\/p>\nHydraulic system:<\/strong> Check cylinder seals on the header lift, unloading auger swing, and any height-adjustment cylinders. Check hydraulic hose condition \u2014 flexing cracks at hose ends near quick couplers are the primary hose failure mode on trailed harvest equipment.<\/p>\nOur Sacramento California warehouse stocks the highest-frequency 4DQ-5 wear components including drum tines, concave bars, sieve sections, elevator chain and buckets, bearing kits, hydraulic seal kits, and pickup reel tine sets. Same-day dispatch on in-season orders received before 2 PM Pacific.<\/p>\n
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Customer Reviews from U.S. Kidney Bean Operations<\/h2>\n
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David Schreiber, Dark Red Kidney Bean Producer, Tuscola County, Michigan (2025 season)<\/strong><\/p>\n\u2605\u2605\u2605\u2605\u2605<\/p>\n
We run 380 acres of dark red kidney beans and have been using contracted custom threshing for years. The 4DQ-5 was the first machine we purchased ourselves for the threshing stage, and the first year it paid for itself compared to the custom rate we were paying. The grain tank capacity is the feature I noticed most \u2014 we only had to stop for unloading four times in a full day of threshing, compared to the continuous logistics shuffle we had with the smaller equipment the custom operator was running. Seed coat damage was within our elevator contract spec of 2% on all loads we checked. The support team answered a concave-clearance question within two hours on a Saturday morning during harvest \u2014 that was unexpected and genuinely useful.<\/p>\n
\nGreg and Annette Paulson, Navy and Kidney Bean Farm, Otter Tail County, Minnesota (2025 season)<\/strong><\/p>\n\u2605\u2605\u2605\u2605\u2605<\/p>\n
We transitioned from a repurposed grain combine with a pickup header to the 4DQ-5 after three seasons of higher-than-acceptable seed coat cracking from the combine’s drum speed. The single-drum design at 540 r\/min input with adjustable concave clearance made an immediate difference \u2014 our elevator dock sheets showed a drop from 3.1% to 1.4% split seed in the first season with the 4DQ-5. The machine arrived pre-assembled from California and was field-ready within a day of delivery. We paired it with the 4BYH-3.25 5-row puller for Stage 1, and the two machines together covered our 420 acres of beans within 9 pulling days and 13 threshing days \u2014 the most organized harvest window we have had in six years of growing beans at this scale.<\/p>\n
\nCraig Olson, Custom Harvest Operator, Sargent County, North Dakota (2025 season)<\/strong><\/p>\n\u2605\u2605\u2605\u2605\u2605<\/p>\n
Running a custom harvest service across four farms totaling about 900 acres of pinto and navy beans. The 4DQ-5 is my main threshing unit paired with two 4BYHD-3.9 pullers for the pulling stage. The combination works as a complete service package \u2014 I schedule pulling at Farm 1 while Farm 2 windrows from the previous week are ready to thresh. At 2.0 to 2.3 ha\/h actual field rate in Red River Valley conditions, I can cover one farm’s threshing block per day on the larger fields. The California warehouse had a sieve section replacement I needed mid-season at my door the next morning on overnight freight. That kind of support is what keeps a custom operation running when a part fails in the field.<\/p>\n
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\nCan the 4DQ-5 pick up standing kidney bean plants directly, or does it require a pre-pulled windrow?+<\/span><\/summary>\nThe 4DQ-5 requires a pre-pulled, field-dried windrow. The pickup header is designed for windrow intake \u2014 it uses a reel-driven pickup mechanism optimized for gathering a tangled mat of pulled and dried plant material, not for cutting or uprooting standing plants. Attempting to feed standing plants risks header plugging, uneven threshing drum loading, and high grain loss at the intake zone from plants folding away from the header rather than feeding cleanly. The correct sequence is: pull with the 4BYH or 4BYHD series, allow 3 to 7 days of field curing, then thresh with the 4DQ-5.<\/div>\n<\/details>\n<\/div>\n
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\nWhat is the minimum pod moisture for clean threshing, and what happens if I thresh too wet or too dry?+<\/span><\/summary>\nThe optimal pod moisture range for the 4DQ-5 is 12 to 18%. At this moisture, pods open cleanly under drum impact and beans release without excessive coat damage. Above 20% moisture, pods are still pliable and resist threshing \u2014 unthreshed pod fractions increase, the cleaning system is overloaded with moist pod material, and grain impurity rises. Below 10% moisture, pods are extremely brittle: they shatter into fine fragments that load the cleaning sieves and contaminate the clean grain sample; the beans themselves are at maximum brittleness and coat cracking increases sharply. The 3 to 7-day curing window after pulling is calibrated to bring pod moisture into the 12 to 18% range. In dry, hot conditions, monitor daily from Day 3 to avoid dropping below 10%.<\/div>\n<\/details>\n<\/div>\n
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\nCan the 4DQ-5 thresh other legume crops such as black beans, pinto beans, or soybeans?+<\/span><\/summary>\nYes \u2014 the 4DQ-5 can be calibrated for other large-seed legumes including black beans, navy beans, pinto beans, and large-seeded soybeans by adjusting the concave clearance and drum speed within the rated PTO range. The concave clearance for smaller-seed legumes like navy beans typically runs narrower than for kidney beans; the sieve apertures may also require adjustment for smaller seed size. Confirm your specific crop and target seed size with our technical team before ordering \u2014 the factory default calibration is set for dark red kidney bean dimensions, and the adjustment range covers most U.S. dry-bean varieties. Small-seeded legumes (adzuki, mung) and pod vegetables (edamame) are outside the calibrated range and are not recommended.<\/div>\n<\/details>\n<\/div>\n
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\nDoes the 200 HP requirement mean I need to buy a new tractor, or can I use my existing 200 HP unit?+<\/span><\/summary>\nIf your existing tractor is rated at 200 engine HP, you need to confirm the PTO-shaft output specifically \u2014 not just the engine rating. Most 200 engine HP row-crop tractors from major OEM brands deliver 165 to 180 HP at the rear PTO shaft under continuous-duty conditions. This is below the 4DQ-5’s 147 kW (200 HP) continuous PTO requirement. Tractors rated at 220 to 240 engine HP typically meet the 200 HP continuous PTO output standard. Provide your tractor’s model number to our U.S. team and we will confirm PTO output from the official test report before your order is finalized. We do not ship the 4DQ-5 without first confirming tractor compatibility \u2014 a mis-matched tractor creates drive clutch wear and potential driveline damage within the first season.<\/div>\n<\/details>\n<\/div>\n
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\nWhat road transport requirements apply to the 4DQ-5?+<\/span><\/summary>\nThe 4DQ-5 at 4,000 mm transport width exceeds the standard U.S. road legal width of 8 feet 6 inches (2.59 m) for agricultural equipment. An oversize load permit is required for any public road travel above this width threshold. Requirements vary by state \u2014 some states allow agricultural equipment up to 4.0 m on county roads during harvest seasons with a simple annual permit; others require trip permits for each movement. Contact your state DOT and county highway department before the first road move of the season. At minimum, the ASABE SMV (Slow-Moving Vehicle) triangle must be displayed at the rear of the machine, and lights must be functioning on any road movement above 3 km\/h. Our team can provide the machine’s certified transport dimensions for permit applications.<\/div>\n<\/details>\n<\/div>\n
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\nHow does the 4DQ-5 grain tank unload, and how long does unloading take?+<\/span><\/summary>\nThe grain tank unloads via a hydraulic auger that extends from the tank outlet to reach an adjacent grain cart or truck positioned alongside during headland turns. Unloading 3,800 to 4,050 kg of dry kidney beans through the auger takes approximately 5 to 10 minutes depending on auger speed and cart positioning. On operations with a dedicated grain cart driver running alongside the 4DQ-5, unloading can begin during the last few passes of a field block before the headland, completing before the machine is ready for the next pass \u2014 effectively eliminating any field stop time for grain transfer. On single-operator setups without a dedicated cart, the machine stops at the headland for unloading and resumes once the cart is cleared.<\/div>\n<\/details>\n<\/div>\n<\/div>\n
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