Heavy duty and mobile, the WDL1690 Horizontal Grinder can readily reduce a wide range of materials can tackle the largest of feedstock, and allows excellent accessibility to the rotor for maintenance.
● Feed Opening: W1600 x H1000 mm
● Rotor diameter: 900 mm
● Engine power: 530 HP
● Production capacity: 30-50 Tons Per Hour
● Max material diameter: 800 mm
● Out put size: 30-50 mm
● Weight: 25 Tons
The Unimax WDL1690 Horizontal Grinder turns yard waste, brush and mixed woody feedstock into high-value, saleable products — the proven workhorse for niche markets such as municipal recycling, pallet recycling, lot clearing, nurseries and tree care debris processing. Its generous feed opening and low sidewalls let whole trees and long material flow in with minimal restriction, keeping production moving without bottlenecks. An intelligent chain feeding system constantly senses load conditions and auto-adjusts feed speed to eliminate no-load operation — even at full capacity, the WDL1690 Horizontal Grinder stays working at peak efficiency, delivering smoother feeding and dramatically higher throughput.
The WDL1690 Horizontal Grinder delivers outstanding multi-scenario grinding capability — by simply switching between different rotor types, it achieves true multi-function versatility in a single machine. The power system is available with either an electric motor or a diesel engine, greatly enhancing the machine’s cost-effectiveness. Built with core components from internationally renowned brands, the entire unit ensures stable and reliable quality. Refined through years of market validation and continuous customer feedback, the WDL1690 has now been upgraded to its third generation: a more ergonomic, human-centric design makes maintenance faster and more convenient, while the continuously improved intelligent feeding system and larger-diameter rotor drive steadily rising throughput — delivering approximately 30% higher output compared to earlier versions. At the same power consumption, this significant boost in production efficiency translates into greater real value for customers.
| Model | WDL1380 | WDL1690 | WDL16105 |
|---|---|---|---|
| Rotor Size:Ø × L (mm) | Ø800 × 1300 | Ø900 × 1700 | Ø1050 × 1700 |
| Rotor Size Type | Blade/Hammer | Blade/Hammer | Blade/Hammer |
| Frequency (rpm) | 600 | 650 | 650 |
| Engine Power (hp) | 480 | 530 | 550 |
| Feeding Method | Automatic chain feeding | Automatic chain feeding | Automatic chain feeding |
| Feed Chute: L × W(mm) | 1300 × 4500 | 1600 × 4500 | 1600 × 4500 |
| Feed Opening:W × H(mm) | 1300*800 | 1600*1000 | 1600*1100 |
| Max Material Diameter(mm) | 600 | 800 | 1000 |
| Discharging Method | Hydraulic folding conveyor belt | Hydraulic folding conveyor belt | Hydraulic folding conveyor belt |
| Discharging Size:L × W(mm) | 7000 × 1200 | 7000 × 1200 | 7000 × 1200 |
| Capacity (Tons Per Hour) | 20-30 | 30-50 | 40-60 |
| Control Method | Remote control (Manual/Automatic Mode) | Remote control (Manual/Automatic Mode) | Remote control (Manual/Automatic Mode) |
| Weight(T) | 20 | 22 | 25 |
| Size L*W*H(mm) | 8450*2600*3350 | 9000*2880*3350 | 9000*2500*3550 |
The feed roller is equipped with aggressive teeth, coupled with down pressure, that provide pull-in power and maintain control of the material being fed to help get the job done efficiently.
Infeed walls wing outwards to increase loading clearance and funnel material.
700L high-strength steel discharge frame delivers high tensile strength, excellent toughness and light weight.
High-hardness steel resists wood friction wear and log/branch impact without deformation or cracking.
Without welded seams, uniform stress distribution, strong impact and deformation resistance. Heavy-duty!support gussets are 100% welded.
Equipped with a TM40 hydraulic travel motor and matched with high.manganese steel ZGMn13 track shoes, it possesses excellent wear resistance and impact. resistance
Internal planetary drive with no chains and sprockets means lower maintenance, more torque and better durability.
The WD Series Horizontal Grinders handle a wide range of biomass feedstocks, especially woody materials including waste wood, tree roots, stumps, trunks, branches, construction formwork, wood pallets and wood slabs, as well as agricultural residues such as cotton stalks, corn stalks and straw.
The WD Series Horizontal Grinders deliver a standard wood chip size of 2–5 cm, and is fully customizable to match operational requirements.
For example, biomass power plants typically burn straw, waste wood and branches as fuel. To meet boiler specifications, straw must be 6–10 cm in length, while wood and branch feedstock should be processed to 5–8 cm or finer.
The final output size is determined by screen aperture, rotor speed and number of blades.
The WD Series Horizontal Grinders features three purpose-built rotor types — blade rotor, hammer rotor, and hammer-blade rotor — each optimized for processing distinct feedstocks. With quick, hassle-free rotor changeover, it delivers exceptional multi-task grinding versatility, adapting seamlessly to varying materials and production requirements.
The blade rotor of the WD Series has been meticulously engineered. The rotor housing is fabricated from 25 mm thick high-manganese wear-resistant steel, while the main shaft is made of 45Cr alloy steel. Blade options include 55SiCr, H12 and Cr12MoV steel grades, all manufactured through a forging process, delivering excellent thermal fatigue resistance, wear resistance and impact resistance. The blades are secured by bolt sleeves and blade clamp plates, which reduces blade wear while protecting the blade body from direct impact by the material. Internally, the rotor is reinforced with five strengthening ribs and carries an additional 600 kg of internal weight, bringing the total rotor weight to 3 tons. This delivers exceptional inertia for greater cutting force and higher throughpu.
The WD series horizontal grinder is equipped with a 4.5 m feed chute manufactured by integral bending. Free of weld seams, it maintains high overall structural strength, featuring a neat appearance and long service life. The support ribs of the feed chute are fabricated with fish-scale welding. This produces well-formed welds with full fusion, uniform stress distribution and outstanding fatigue resistance, effectively enhancing the strength and corrosion resistance of welded areas.
The WD series horizontal grinder adopts a crawler chassis sourced from 20-tonne class excavators, fitted with TM40 travel motors. It delivers a maximum climbing capacity of 30 degrees. The manganese steel track pads feature excellent wear resistance and impact resistance. Well-suited for field grinding operations, the machine moves flexibly on unpaved surfaces. With low ground pressure, the chassis avoids sinking on soft ground. Variable travel speed and agile steering ensure outstanding machine stability to cope with a wide range of complex field conditions.
The WD Series Horizontal Grinders is equipped with an American WPT clutch, whose heavy-duty industrial design ensures smooth power engagement and efficient transmission. Its start-up cushioning and overload protection significantly reduce shock to the engine and drivetrain, while high torque capacity and self-compensating wear adjustment minimize maintenance frequency and downtime, keeping the machine stable and reliable even under harsh, dusty and high-vibration conditions. As a leading American brand certified to ISO 9001-2015 and endorsed by ABS/DNV classification societies, WPT also serves as a mark of quality for the Unimax in international markets, strengthening customer trust and competitiveness.
The WD Series Horizontal Grinders are available with two power system options: electric motor and diesel engine. Engineered to deliver cost-effective power solutions for customers, they allow selection of the optimal power configuration to match diverse grinding scenarios and processing tasks. Electric motor options include brands such as Siemens and Wolong, while diesel engine options feature Weichai and Cummins.
The intelligent feed system self-monitors the machine’s engine speed, makes predictive adjustments and holds the engine at an optimal level, allowing you to spend more time feeding and less time adjusting settings. Once there is a plugging, feed system will stop feeding to protect the machine avoid feeding plugging. production requirements.
The WD Series Horizontal Grinders are equipped with a dual control system that supports two operating modes: a fixed electrical control cabinet and a remote control interface. The two modes complement each other to enable smart, user-friendly operation. Both the feeding and travel systems incorporate intelligent design, which not only enhances operational safety but also delivers a convenient and intuitive user experience.
Remote control crawler self-propelled, easy to move, maximum moving speed 2km/h
Can be towed by trucks, loaders, excavators, Support optional air brake
The Horizontal grinders allow for continuous feeding of long and straight material such as timber, branches, slab, batten, wood core, roots, bark, waste veneer, particle board, fiber board, sugarcane, reed, bamboo. etc.
Both Unimax horizontal and tub grinders excel at processing wood waste into saleable products. Choosing between a horizontal grinder and a tub grinder depends on your specific needs, including the types of materials you need to process, desired output size and consistency, mobility requirements, space availability, and budget considerations. Horizontal grinders allow for continuous feeding of long and straight material, while tub grinders are ideal at processing bulky and irregularly shaped materials like whole trees, stumps, brush, and demolition debris.
Of course, tell us your raw materials and uses, we will recommend the most cost -effective equipment. If it is for recycling, our engineers can make a solution for the production line for you.
We are a manufacturer with more than 20 years of experience. We have our own stock workshop, production workshop, assembly workshop, etc. We can provider comprehensive customization and after -sales support. There are no middlemen to earn differences, only lower prices and better support for you.
There are two kinds of power, diesel and electric, we can provide Cummins diesel engine with EPA/CE certification, customer can also choose china's famous brand Weichai and other brands which is Cost-effective and with proven quality.
When the machine is overloaded and blocked, the metal chain conveyor, pressure roller and rotor with blades will rotate in the opposite direction at the same time to discharge the blocked material, effectively reducing equipment damage.
Yes, as an agency, you will not only enjoy exclusive agency prices but also receive annual rebates. Additionally, our marketing team will provide you with terminal customer resources in your region.
The factors that affect the life of the horizontal grinder are generally these, whether the quality of the raw materials is thick and durable, regular maintenance, correct operation of the machine (reduce the wear of the machine), and reasonable working hours. Proper maintenance of the equipment can make the machine last 15-20 years.
