Efficient small milling machine for standard applications Cold milling machine W 50
The economically efficient alternative for countless small milling jobs Efficiency is the W 50 s hallmark The W 50 is the perfect intermediate-size machine between the tried-and-tested small milling machine models W 35 DC and W 50 DC, and fully meets the requirements of standard users. Whether milling on small to mediumsized roads, carrying out small repairs or milling tie-ins, milling around manhole covers or removing asphalt strips: The W 50 performs all the jobs that are typical of a small milling machine with tremendous economic efficiency. Ease of operation, low fuel consumption and the machine s solid design do their bit to guarantee surprisingly low operating costs. It goes without saying that many different customer expectations are also taken into account, for the W 50 s equipment concept offers a tremendous variety of individual options.
The W 50 is distinctive for its tried-and-tested equipment features and extremely easy handling Compact, dependable and economically efficient In accordance with the customer s specification: machine without loading conveyor The W 50 s intuitive control interface and ergonomically optimized operator s platform considerably increase comfort for the machine operator. Additional options, such as different conveyor choices, canopy, three-wheel or four-wheel design, or FCS extend the range of applications and ease of operation. Highly precise milling results of top quality can be achieved with the optional LEVEL PRO levelling system, which has been specially developed for use in milling machines. The W 50 s compact design guarantees ease of transport, exceptional manoeuvrability, and good overall view. 2// 3
Large surfaces are no problem for small machines A class of its own in practical operation The W 50 impresses not only when swiftly removing surface courses at depths of up to 4 cm. It cuts a fine figure also when milling off several layers or even entire asphalt packages at depths of up to 16 cm. The performance diagram is proof that the small milling machine is capable of achieving high daily production rates. The schematic diagram on the opposite page can be used for a rough calculation of the practical milling performance to be expected. An allowance factor takes account of influencing factors that may reduce the performance, such as hindrances to the work resulting from traffic, waiting times for trucks, non-contiguous milling areas or road fixtures.
Milling depth (cm) 16 14 12 Hard asphalt Soft asphalt 10 8 Most frequent operating area 6 4 2 0 0 50 100 150 200 250 300 350 400 450 500 Theoretical area performance (m 2 /h) Economically efficient milling of surfaces Free motorway section (allowance factor: 0.7) 0 50 100 150 200 250 300 350 Practical area performance (m 2 /h) Country road with road fixtures (allowance factor: 0.5) 0 50 100 150 200 250 Practical area performance (m 2 /h) An allowance factor of 0.3 is used where space is limited Heavily trafficked inner-city road (allowance factor: 0.3) 0 50 100 150 Practical area performance (m 2 /h) Calculation of the area performance, taking account of different job site conditions The modern engine and direct mechanical milling drum drive guarantee full performance up to a milling depth of 160 mm. The machine's powerful, flexible conveyor system can be depended on to preclude performance losses during loading of the milled material. The allowance factor is between 0.7 for free sections of road and 0.3 for heavy urban traffic. 4// 5
Mature engineering guarantees high daily production rates Reliable high-tech works the ground Wirtgen has been the leader in cutting technology for many years, guaranteeing high-quality milling results. An optimized arrangement of the toolholders on the milling drum and clever tooling of the drum edges ensure a clean milling texture and quiet operation of the machine. The milling drum is fitted with welded toolholders and works against the direction of travel in an effectively sealed milling chamber. Clean loading of the milled material is ensured by the hydraulically height-adjustable scraper blade: Depending on its position, all or just part of the milled material is loaded on trucks, while the remainder is left in the milled cut.
Cutting tools per cubic metre 2,5 2,0 1,5 1,0 0,5 Perfect milling results 0,0 25 50 75 100 125 150 175 Milling depth in mm Cutting tools per m 3 at high wear and tear Cutting tools per m 3 at low wear and tear Cutting tools per m 3 at medium wear and tear Cutting tool wear as a function of the milling depth and the properties of the pavement to be milled The scraper blade is locked when in raised position to allow convenient replacement of cutting tools Low cutting tool wear cuts operating costs When in floating position, the scraper blade permits full loading of the milled material The scraper blade can be opened hydraulically to provide the machine operator with ample room for the replacement of cutting tools. To ensure the safety of the machine operator, the milling drum is switched off automatically when opening the scraper blade. Cutting tools are replaced quickly and easily using standard tools. The rotating point-attack tools from Wirtgen are synonymous with tried-and-tested, highly durable cutting-edge technology. 6// 7
Making child s play of work on the job site FCS fine milling drum Milling width: Milling depth: Tool spacing: 500 mm 0 50 mm 6 mm FCS micro fine milling drum Milling width: 300 + 2 x 25 mm Milling depth: 0 30 mm Tool spacing: 3 mm FCS micro fine milling drum Milling width: 500 mm Milling depth: 0 30 mm Tool spacing: 3 mm FCS makes the W 50 an all-rounder on the job site The small milling machine W 50 is fully equipped for meeting the daily challenges on the job site. A mechanically driven milling drum guarantees maximum efficiency and top performance. The power belts of the milling drum drive ensure optimum transmission of power, while successfully absorbing peak loads. The optional FCS offers an even larger range of applications the patented quick-change system for milling drums turns the W 50 into an all-rounder, guaranteeing full utilization of the small milling machine at all times. The system enables the W 50 to be fitted with milling drums of different working widths and tool spacings easily and in an extremely short period of time.
Changing the milling drum in a few swift moves Raise the side plates when travelling over obstacles, or press down on the ground as and when required The milling drum is easily pulled off the shaft after unscrewing The hydraulically pressurized side plates reliably seal off the drum housing The machine s electrically operated water spray system reduces cutting tool wear and tear, as well as the development of dust during the milling operation. The side plates on both sides of the milling drum can be raised, preventing them from digging into unpaved shoulders. The nozzles of the water spray system can be removed and cleaned in no time at all. Special milling drums for different applications are available upon request. 8// 9
Fast and flexible loading of material The loading conveyor can be adjusted in height and slewed by 25 to the left and 20 to the right, permitting loading to be effected to the side Economically efficient material loading is most important Reliable loading of the milled material is of crucial importance when it comes to ensuring the smooth completion of a milling site. That s where our W 50 makes a strong showing. Customers can choose from as many as four different loading conveyor options. Whether the milled material is loaded on trucks or into the bucket of a wheel loader, deposited as a windrow next to the machine, or left in the milled cut efficient removal is guaranteed at all times. The conveyor belts are fitted with robust, sturdy cleats to ensure powerful transport of the milled material. All conveyors are adjustable in height and can be slewed to either side. The conveyor belt speed is continuously adjustable to enable even large trucks to be filled right to the top.
The W 50 s optional folding conveyor facilitates transport Always on the safe side with four loading options The short conveyor permits loading into the bucket of a wheel loader or onto a mini dumper The W 50 leaves the milled material in the cut when working without loading conveyor The W 50 is available with the following conveyor options: without conveyor, with one-stage short conveyor, one-stage long conveyor, or long folding conveyor. A special coupling device enables the loading conveyor to be attached or removed in a few swift moves by one person only. The optionally available folding conveyor shortens the transport length by approx. 2 m, enabling the small milling machine to be transported on smaller trailers. The conveyor s hydraulic power take-off can optionally be used for ancillary equipment like, for instance, a hydraulic hammer. 10 // 11
Effective milling when space is limited The W 50 can turn nearly on the spot when the front wheel is steered to maximum lock Four instead of three wheels for even better traction A steering angle indicator on the engine cowling shows the position of the front wheel (3-wheeled model only) Unmatched in terms of manoeuvrability A compact, manoeuvrable cold milling machine on three (optionally four) individually driven wheels that s the W 50 from Wirtgen. The machine s superior manoeuvrability in space-restricted conditions enables many jobs on a milling site to be completed with much more ease and speed. An extremely large locking angle of the front axle is part and parcel of the entirely coherent machine concept, enabling extremely tight milling radii when milling around manhole covers or gas valves. The rear right support wheel can additionally be folded in or out quickly to improve the machine s side clearance. This practical feature permits highly precise milling along obstacles like, for instance, walls or traffic islands.
Permanent all-wheel drive with engageable differential lock is a standard feature Manoeuvrability offers significant time advantages The support wheel is folded in quickly in a few swift moves The W 50 is capable of milling flush to kerb with the support wheel folded in front of the drum The W 50 s hydraulic, finger-light steering supports the machine operator when working in narrow sections. The travel speed can be infinitely varied from zero to maximum speed in both milling gears and in travel gear. A hydraulic flow divider acts as differential lock, guaranteeing permanent and uniform traction all the time regardless of ground conditions. The machine s large ground clearance protects the lower part of the chassis from being damaged by, for instance, high kerbstones. 12 // 13
Ergonomics and operator comfort Relaxed working for extended periods of time Ergonomics boost performance! For precisely that reason, the development of the W 50 has produced a role model of user-friendliness and maximum customer benefit. The control elements are arranged clearly, within easy reach and within the operator s immediate field of vision. The optional driver s seat, which can be moved beyond the right edge of the machine, and comfortable working in both standing and sitting positions ensure an excellent view of the milling edge and the working environment. It goes without saying that the steering wheel can be tilted to adapt to each operator s personal preferences. Altogether, the intelligent workplace design prevents fatigue and ensures relaxed working for extended periods of time.
In line with practical requirements the clearly structured main control panel is within easy reach Feeling comfortable helps to do a faster job Lockable covers protect the control elements from damage Simple handling, single-handedly The tilting steering wheel and ample legroom increase the operator s comfort when working in standing position The machine operator has a full view of the milling edge, which guarantees maximum safety. A multi-functional display at the control panel keeps the operator informed of all relevant operating states. The spring-mounted driver s seat can be adjusted in the direction of travel, in height and lengthwise, offering a maximum degree of individual comfort. The W 50 s main functions are easily operated via the control elements integrated in the right-hand armrest. 14 // 15
The Wirtgen levelling system guarantees precise work results Convenient levelling with LEVEL PRO Scales installed on both sides indicate the milling depth with pin-point accuracy Convenient and simple operation is a mark in favour of the LEVEL PRO control system Full control of milling depth and slope A unique feature in this machine class, the innovative LEVEL PRO automatic levelling system (optional) enables the performance capacity of small milling machines to be increased even further. Wire-rope and cross slope sensors integrated in the LEVEL PRO levelling system ensure precise, automatic control of milling depth and slope. The user-friendly LEVEL PRO control panel is arranged on the operator s platform and within the machine driver s immediate field of vision. Its clearly structured, intuitive design makes operation of the W 50 simple and significantly increases operator comfort. Target and actual values of the milling depths left and right are displayed on easy-to-read milling depth indicators all the time. Target values are easily pre-programmed, saved and called up as required.
Power under the bonnet yet low in fuel consumption P (kw) M [Nm] Economically efficient travel drive 60 260 50 240 40 220 30 200 20 180 10 160 0 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 140 2500 [1/min] Characteristic curve of engine output and torque Exhaust fumes are conducted away from the operator s platform in the front part of the machine Power is supplied by a state-of-the-art diesel engine The major hallmarks of the tried-and-tested 4-cylinder diesel engine are high power combined with economical operation. Thanks to low noise levels, the soundproofed engine compartment protects both the machine operator and the environment from noise pollution. The highly efficient milling drum drive in the W 50 pays for itself through low fuel consumption. 16 // 17
An ingenious maintenance concept pays for itself daily Little effort is needed to keep the W 50 in top shape The W 50 impresses with a simple maintenance concept. The small amount of maintenance work has been reduced to a small number of individual inspection points. Wide opening doors on both sides enable maintenance to be carried out quickly and easily from the ground. Engine, service points and filters are all located within easy reach. Water or fuel are refilled just as quickly via the easily accessible filling ports. The surprisingly simple maintenance concept will ultimately give the machine user a lucrative lead, allowing rapid completion of the construction work.
Clearly arranged maintenance points Fast maintenance wins precious operating time The W 50 offers sufficient space for storage, including the storage compartment under the driver s seat Wide opening wing doors provide optimum access to the engine compartment All maintenance points are within easy reach thanks to the wide opening engine cowling. The W 50 is equipped with a spacious, lockable storage compartment for tool containers or tools. A comprehensive tool kit is part of the standard scope of delivery. 18 // 19
Working under controlled conditions day and night Milling regardless of the time of day Flexible spotlights are attached to the machine in no time at all Safe and convenient access at the rear side of the machine When switched on, the machine s lighting system illuminates the entire working area Effective lighting system ensures safe operation An excellent range of vision by day and night, as well as controlled working even in difficult conditions the W 50 is a role model when it comes to meeting these vital criteria. The advantages are obvious: In addition to ensuring the safety of the machine driver and producing a clean work result, undisturbed working at night also increases the machine s overall utilization. Optimum illumination is ensured by two headlights at the front, as well as several additional lamps that can be attached in any position on the machine. The safety package is completed by quickly accessible emergency stop buttons, exterior mirrors, a clearly audible reversing horn and illuminated control panel.
Loaded in no time at all and off to the next job site Driving the machine onto a trailer is easy, posing no problem at all Machine transport the short way around A large number of lashing lugs enable the machine to be securely lashed onto the trailer or loaded by crane The W 50 reduces its size for transport purposes Safe and fast loading permits the cold milling machine to be transported to the next job location as quickly as possible. The W 50 has the ideal size not only for low-loaders but also for small, low-cost trailers. The optional canopy can be folded down conveniently via gas-filled springs to save space during transport. Wirtgen s product portfolio offers made-to-measure trailers for transport of the W 50. 20 // 21
The dependable W 50 in versatile operation A good view of the milling edge permits precise milling flush to kerb Milling along road fixtures is no problem at all The W 50 masters its range of applications with superior ease A normal working day for the W 50 can sometimes be quite multi-faceted: In the morning, a trailer transports the machine to the job site, where it is quickly unloaded. Work commences immediately, consisting of the many jobs that are typical of a small milling machine: On this day, the W 50 will carry out work that the large milling machine working on the same job is not capable of performing. The pavement around some manhole covers needs to be milled off first, followed by pavement strips in difficult bends. At around lunchtime, the rear right wheel is folded in without further ado to mill off any remaining pavement strips flush to kerb. Just before the working day ends, the W 50 quickly mills two wedge-shaped tie-ins. That s it for today! All that remains to be done is load the machine because the next job site is waiting on the next day.
Milling tie-ins in a crossroad area The W 50 is master of many trades Milling larger surfaces is no problem at all for the W 50 Milling around a manhole cover is child s play, indeed On milling sites, the W 50 is an ideal companion of large milling machines which are responsible for milling off the large surfaces. The compact small milling machine s exceptional manoeuvrability makes it the ideal candidate in particular for jobs in space-restricted conditions. A broad variety of special milling drums are available, including a slot cutting ring for cutting butt joints, or a milling drum for producing water gutters. Three different loading conveyor options broaden the machine s spectrum of applications, while ensuring optimum completion of jobs at the same time. 22 // 23
Illustrations are non-binding and may include customized fittings. Subject to technical changes. Performance data depend on operational conditions. No. 03-10 EN-04/08 by Wirtgen GmbH 2008. Printed in Germany Wirtgen GmbH Reinhard-Wirtgen-Straße 2 53578 Windhagen Germany Phone: +49 (0) 26 45 / 131-0 Fax: +49 (0) 26 45 / 131-242 Internet: www.wirtgen.com E-Mail: info@wirtgen.com