{"id":429,"date":"2026-05-21T05:59:30","date_gmt":"2026-05-21T05:59:30","guid":{"rendered":"https:\/\/rock-crusher-tractor.com\/?post_type=product&p=429"},"modified":"2026-05-21T06:00:50","modified_gmt":"2026-05-21T06:00:50","slug":"ep-awb-1600-trailed-potato-digger-2-4-row","status":"publish","type":"product","link":"https:\/\/rock-crusher-tractor.com\/nl\/product\/ep-awb-1600-trailed-potato-digger-2-4-row\/","title":{"rendered":"EP-AWB-1600 Trailed Potato Digger \u2013 2 & 4 Row, up to 10 km\/h"},"content":{"rendered":"
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10<\/div>\n
km\/h Max Speed<\/div>\n<\/div>\n
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4<\/div>\n
Rows (AWB-3200 CAR)<\/div>\n<\/div>\n
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2\u00d7<\/div>\n
vs Mounted Speed<\/div>\n<\/div>\n
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540<\/div>\n
RPM PTO<\/div>\n<\/div>\n
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95 HP<\/div>\n
Min. Power (2-Row)<\/div>\n<\/div>\n<\/div>\n

<\/p>\n

For the Most Demanding Producers \u2014 Speed, Scale, Performance<\/h2>\n

Watanabe describes this series plainly: “Designed to meet the most demanding producers. Secured performance and quality.”<\/em> The EP-AWB-1600 trailed potato digger range \u2014 covering the AAR, BAR, and CAR variants \u2014 and the four-row EP-AWB-3200 CAR are built for operations where the question is not whether the machine can do the job, but how many hectares it can process in a single harvest day.<\/p>\n

The core difference from the EP-AWB-1600 mounted series<\/a> is speed. Where the mounted versions work at 3\u20135 km\/h on a Category 2 three-point hitch, the trailed models run at 5\u201310 km\/h<\/strong> on a drawbar connection \u2014 effectively doubling the field coverage rate for the same 2-row configuration. At 8 km\/h with 60 cm row spacing, the 2-row trailed machine covers approximately 0.96 hectares per productive hour<\/strong>. The EP-AWB-3200 CAR, with 4 rows at the same speed, doubles that again to approximately 1.92 hectares per hour<\/strong> \u2014 roughly four times the throughput of the basic mounted model.<\/p>\n

These are the four models in the trailed range:<\/p>\n

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\u25b6 EP-AWB-1600 AAR<\/p>\n

1,150 Kg<\/strong>, 95 cv<\/strong> min., no hydraulic valves. The entry-level trailed model \u2014 simplest configuration, Kit A (centre discharge) compatible. Good choice when side discharge or haulm separation is not required.<\/p>\n<\/div>\n

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\u25b6 EP-AWB-1600 BAR Popular<\/span><\/p>\n

1,350 Kg<\/strong>, 95 cv<\/strong> min., 2 hydraulic valves<\/strong>. Most frequently chosen 2-row trailed model \u2014 supports all three kit options. Side discharge (Kit B) is the most common setup for farms running a trailer alongside.<\/p>\n<\/div>\n

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\u25b6 EP-AWB-1600 CAR<\/p>\n

1,500 Kg<\/strong>, 95 cv<\/strong> min., 2 hydraulic valves<\/strong>. Heaviest 2-row trailed variant \u2014 the most robust configuration for high-intensity seasonal use, stony soils, and operations requiring Kit C (side + deviner web).<\/p>\n<\/div>\n

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\u25b6 EP-AWB-3200 CAR \u2014 4-Row<\/p>\n

3,000 Kg<\/strong>, 140 cv<\/strong> min. Watanabe’s highest-capacity potato harvest machine \u2014 4 rows per pass<\/strong>, 5\u201310 km\/h. For large commercial farms, cooperatives, and contractors handling 30+ hectares per season where harvest throughput is the primary constraint.<\/p>\n<\/div>\n<\/div>\n

All four models share the same 540 RPM PTO drive, the same 5\u201310 km\/h working speed range, and the same fundamental web-conveyor gentle handling that defines the Watanabe potato digger design philosophy. What varies is weight, hydraulic valve requirement, row count, and the tractor power they call on. The trailed configuration itself \u2014 drawbar mounting on the machine’s own running wheels rather than being carried on the tractor’s Category 2 hitch \u2014 is what enables the higher speed: the machine follows the tractor smoothly on its own ground-following axle rather than being transported on the hitch at a height that limits operating speed.<\/p>\n

\"Potato<\/p>\n

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Technical Specifications \u2013 EP Trailed Potato Digger Series<\/h2>\n

Presented in two tables: the 2-row trailed models (AAR\/BAR\/CAR) and the 4-row EP-AWB-3200 CAR. All data from the Watanabe official product brochure. Note the control valve column \u2014 it determines kit compatibility, just as in the mounted series.<\/p>\n

Table 1 \u2014 EP-AWB-1600 AAR \/ BAR \/ CAR (2-Row Trailed)<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n
TECHNISCHE GEGEVENS<\/th>\nEP-AWB-1600 AAR<\/th>\nEP-AWB-1600 BAR<\/th>\nEP-AWB-1600 CAR<\/th>\n<\/tr>\n<\/thead>\n
Weight & Configuration<\/td>\n<\/tr>\n
Gewicht<\/strong><\/td>\n1,150 Kg<\/td>\n1,350 Kg<\/strong><\/td>\n1,500 Kg<\/td>\n<\/tr>\n
Number of Rows<\/strong><\/td>\n2<\/td>\n2<\/td>\n2<\/td>\n<\/tr>\n
Mounting Type<\/td>\nDrawbar \/ Trailed<\/td>\nDrawbar \/ Trailed<\/td>\nDrawbar \/ Trailed<\/td>\n<\/tr>\n
Tractor Requirements<\/td>\n<\/tr>\n
Engine Power (min.)<\/strong><\/td>\n95 cv<\/strong><\/td>\n95 cv<\/strong><\/td>\n95 cv<\/strong><\/td>\n<\/tr>\n
PTO Input Speed<\/strong><\/td>\n540 RPM<\/td>\n540 RPM<\/td>\n540 RPM<\/td>\n<\/tr>\n
Required Control Valves<\/strong><\/td>\n\u2014<\/td>\n2<\/td>\n2<\/td>\n<\/tr>\n
Working Speed<\/strong><\/td>\n5\u201310 Km\/h<\/strong><\/td>\n5\u201310 Km\/h<\/strong><\/td>\n5\u201310 Km\/h<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Table 2 \u2014 EP-AWB-3200 CAR (4-Row Trailed)<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n
TECHNISCHE GEGEVENS<\/th>\nEP-AWB-3200 CAR<\/th>\n<\/tr>\n<\/thead>\n
Gewicht<\/td>\n3,000 Kg<\/strong><\/td>\n<\/tr>\n
Number of Rows<\/strong><\/td>\n4<\/strong><\/td>\n<\/tr>\n
Mounting Type<\/td>\nDrawbar \/ Trailed<\/td>\n<\/tr>\n
Engine Power (min.)<\/strong><\/td>\n140 cv<\/strong><\/td>\n<\/tr>\n
PTO Input Speed<\/strong><\/td>\n540 RPM<\/strong><\/td>\n<\/tr>\n
Required Control Valves<\/td>\n\u2014<\/td>\n<\/tr>\n
Working Speed<\/strong><\/td>\n5\u201310 Km\/h<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u24d8 cv = metric horsepower. 95 cv \u2248 93.6 HP; 140 cv \u2248 138 HP. EP-AWB-3200 CAR control valve field is “\u2014” per the Watanabe brochure \u2014 confirm discharge configuration at the pre-sale stage. Throughput estimates (at 60 cm row spacing, 8 km\/h): 2-row trailed \u2248 0.96 ha\/hr; EP-AWB-3200 CAR \u2248 1.92 ha\/hr. Actual output depends on field conditions, headland turns, and soil separation requirements.<\/p>\n

Optional Kit Configurations \u2014 Trailed Series<\/p>\n

\n\n\n\n\n\n\n\n
Kit<\/th>\nWhat It Adds<\/th>\nCompatible Models<\/th>\n<\/tr>\n<\/thead>\n
Kit A<\/td>\n2nd Web \u2014 Centre Discharge<\/td>\nAAR, BAR, CAR<\/td>\n<\/tr>\n
Kit B<\/td>\n2nd Web \u2014 Side Discharge<\/td>\nBAR and CAR only (2 valves)<\/td>\n<\/tr>\n
Kit C<\/td>\nSide Discharge + Deviner Web<\/td>\nBAR and CAR only (2 valves)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

<\/p>\n

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How the Trailed Series Achieves Higher Speed Without Sacrificing Gentleness<\/h2>\n

Why Trailed Outpaces Mounted \u2014 The Physics of Higher Field Speed<\/h3>\n

A three-point hitch mounted implement is carried on the tractor’s rear linkage \u2014 the machine sits above the ground on the tractor’s own structure. At higher forward speeds, the hitch-mounted machine becomes increasingly subject to vertical oscillation as the tractor crosses uneven ground: the machine bounces on the hitch, the blade lifts off the ridge floor and then plunges back in, producing inconsistent digging depth and higher tuber damage. This is why the mounted EP-AWB-1600 series specifies 3\u20135 km\/h \u2014 above that range, consistency suffers.<\/p>\n

A trailed machine has its own ground-following wheels that carry its weight independently of the tractor. As the tractor crosses a ridge in the field, the trailed machine’s wheels absorb the undulation at a different point along the chassis, significantly reducing the vertical movement transmitted to the blade and web. This ground-following stability is what allows the trailed series to operate reliably at 5\u201310 km\/h \u2014 the machine stays in consistent contact with the ridge profile at speed because it is following the ground rather than being carried over it.<\/p>\n

The result in practical terms: at 8 km\/h with the EP-AWB-1600 BAR on a 2-row planted field with 60 cm row spacing, a single operator can cover approximately 0.96 hectares per productive hour<\/strong> of field travel time. An eight-hour harvest day \u2014 accounting for headland turns and brief stops \u2014 typically yields 6\u20138 hectares of harvested area. For farms planning a multi-day harvest of a 20\u201330 hectare potato area within a tight weather window, this output level makes the difference between completing on time and running into the next weather event.<\/p>\n

Web Conveyor System \u2014 Speed Without Damage<\/h3>\n

The web conveyor design on the trailed series uses the same fundamental gentle-bar approach as the mounted versions \u2014 hardened steel bars at consistent spacing that allow soil to fall through while tubers travel rearward to discharge. The higher working speed of the trailed series means a proportionally higher volume of ridge material arrives on the web per unit time: at 8 km\/h versus 4 km\/h, the primary web is handling twice the material flow rate.<\/p>\n

Watanabe addresses this by specifying web conveyor length and bar spacing for the trailed series’ higher material throughput. The web is long enough that the separation time \u2014 the period each unit of lifted ridge material spends on the moving web surface \u2014 is sufficient for soil to pass through and tubers to clear to the discharge point, even at the higher operating speed. The bar edge radius and surface finish specification that defines the “without damage to the potato” characteristic of the mounted series is carried through to the trailed versions unchanged.<\/p>\n

\"Potato<\/p>\n

Kit A, Kit B, and Kit C \u2014 Same Options, Higher-Speed Context<\/h3>\n

The three discharge kit options available on the trailed series function identically to those on the mounted versions: Kit A delivers a centre windrow, Kit B sends tubers to a side windrow or directly into a parallel trailer, and Kit C adds the deviner web for haulm separation before side discharge. In the context of the trailed series’ higher operating speed, the kit choice has a direct scheduling implication:<\/p>\n